Imported Upstream version 2.4.1upstream/2.4.1

301 files changed, 2146 insertions, 912 deletions

diff --git a/QMTest/README.txt b/QMTest/README.txt
index 98b4dd8..8f08c2b 100644
--- a/QMTest/README.txt
+++ b/QMTest/README.txt
@@ -55,4 +55,4 @@ the pieces here are local to SCons.
         really using it as originally envisioned.
 
 Copyright (c) 2001 - 2015 The SCons Foundation
-QMTest/README.txt rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog
+QMTest/README.txt rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog
diff --git a/QMTest/TestRuntest.py b/QMTest/TestRuntest.py
index 1e955f7..6c113fe 100644
--- a/QMTest/TestRuntest.py
+++ b/QMTest/TestRuntest.py
@@ -14,7 +14,7 @@ attributes defined in this subclass.
 
 # Copyright (c) 2001 - 2015 The SCons Foundation
 
-__revision__ = "QMTest/TestRuntest.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "QMTest/TestRuntest.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import os.path
diff --git a/QMTest/TestSCons.py b/QMTest/TestSCons.py
index ff3c0a9..3e96c02 100644
--- a/QMTest/TestSCons.py
+++ b/QMTest/TestSCons.py
@@ -15,7 +15,7 @@ attributes defined in this subclass.
 # Copyright (c) 2001 - 2015 The SCons Foundation
 from __future__ import division
 
-__revision__ = "QMTest/TestSCons.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "QMTest/TestSCons.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import re
@@ -34,7 +34,7 @@ from TestCmd import PIPE
 # here provides some independent verification that what we packaged
 # conforms to what we expect.
 
-default_version = '2.4.0'
+default_version = '2.4.1'
 
 python_version_unsupported = (2, 3, 0)
 python_version_deprecated = (2, 7, 0)
@@ -43,7 +43,7 @@ python_version_deprecated = (2, 7, 0)
 # line must remain "__ VERSION __" (without the spaces) so the built
 # version in build/QMTest/TestSCons.py contains the actual version
 # string of the packages that have been built.
-SConsVersion = '2.4.0'
+SConsVersion = '2.4.1'
 if SConsVersion == '__' + 'VERSION' + '__':
     SConsVersion = default_version
 
@@ -714,6 +714,9 @@ class TestSCons(TestCommon):
                 home = '/System/Library/Frameworks/JavaVM.framework/Home'
             else:
                 home = '/System/Library/Frameworks/JavaVM.framework/Versions/%s/Home' % version
+                if not os.path.exists(home):
+                    # This works on OSX 10.10
+                    home = '/System/Library/Frameworks/JavaVM.framework/Versions/Current/'
         else:
             jar = self.java_where_jar(version)
             home = os.path.normpath('%s/..'%jar)
diff --git a/QMTest/TestSConsMSVS.py b/QMTest/TestSConsMSVS.py
index 4c86ece..cdd85b5 100644
--- a/QMTest/TestSConsMSVS.py
+++ b/QMTest/TestSConsMSVS.py
@@ -15,7 +15,7 @@ in this subclass.
 
 # Copyright (c) 2001 - 2015 The SCons Foundation
 
-__revision__ = "QMTest/TestSConsMSVS.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "QMTest/TestSConsMSVS.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import sys
diff --git a/QMTest/TestSCons_time.py b/QMTest/TestSCons_time.py
index d73ea82..4484015 100644
--- a/QMTest/TestSCons_time.py
+++ b/QMTest/TestSCons_time.py
@@ -13,7 +13,7 @@ attributes defined in this subclass.
 
 # Copyright (c) 2001 - 2015 The SCons Foundation
 
-__revision__ = "QMTest/TestSCons_time.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "QMTest/TestSCons_time.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import os.path
diff --git a/QMTest/TestSConsign.py b/QMTest/TestSConsign.py
index 6a06316..67f8abb 100644
--- a/QMTest/TestSConsign.py
+++ b/QMTest/TestSConsign.py
@@ -1,6 +1,6 @@
 # Copyright (c) 2001 - 2015 The SCons Foundation
 
-__revision__ = "QMTest/TestSConsign.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "QMTest/TestSConsign.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """
 TestSConsign.py:  a testing framework for the "sconsign" script 
diff --git a/QMTest/scons_tdb.py b/QMTest/scons_tdb.py
index 8b37158..d85d15c 100644
--- a/QMTest/scons_tdb.py
+++ b/QMTest/scons_tdb.py
@@ -28,7 +28,7 @@ QMTest classes to support SCons' testing and Aegis-inspired workflow.
 Thanks to Stefan Seefeld for the initial code.
 """
 
-__revision__ = "QMTest/scons_tdb.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "QMTest/scons_tdb.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 ########################################################################
 # Imports
diff --git a/README.rst b/README.rst
index 05be712..a2b15a6 100644
--- a/README.rst
+++ b/README.rst
@@ -156,7 +156,7 @@ Or on Windows::
 
 By default, the above commands will do the following:
 
-- Install the version-numbered "scons-2.4.0" and "sconsign-2.4.0" scripts in
+- Install the version-numbered "scons-2.4.1" and "sconsign-2.4.1" scripts in
   the default system script directory (/usr/bin or C:\\Python\*\\Scripts, for
   example).  This can be disabled by specifying the "--no-version-script"
   option on the command line.
@@ -168,16 +168,16 @@ By default, the above commands will do the following:
   before making it the default on your system.
 
   On UNIX or Linux systems, you can have the "scons" and "sconsign" scripts be
-  hard links or symbolic links to the "scons-2.4.0" and "sconsign-2.4.0"
+  hard links or symbolic links to the "scons-2.4.1" and "sconsign-2.4.1"
   scripts by specifying the "--hardlink-scons" or "--symlink-scons" options on
   the command line.
 
-- Install "scons-2.4.0.bat" and "scons.bat" wrapper scripts in the Python
+- Install "scons-2.4.1.bat" and "scons.bat" wrapper scripts in the Python
   prefix directory on Windows (C:\\Python\*, for example).  This can be disabled
   by specifying the "--no-install-bat" option on the command line.
 
   On UNIX or Linux systems, the "--install-bat" option may be specified to
-  have "scons-2.4.0.bat" and "scons.bat" files installed in the default system
+  have "scons-2.4.1.bat" and "scons.bat" files installed in the default system
   script directory, which is useful if you want to install SCons in a shared
   file system directory that can be used to execute SCons from both UNIX/Linux
   and Windows systems.
@@ -462,7 +462,7 @@ running all of "runtest.py -a".
 Building Packages
 =================
 
-We use SCons (version 2.4.0 or later) to build its own packages.  If you
+We use SCons (version 2.4.1 or later) to build its own packages.  If you
 already have an appropriate version of SCons installed on your system, you can
 build everything by simply running it::
 
@@ -477,18 +477,18 @@ about `Executing SCons Without Installing`_)::
 Depending on the utilities installed on your system, any or all of the
 following packages will be built::
 
-        build/dist/scons-2.4.0-1.noarch.rpm
-        build/dist/scons-2.4.0-1.src.rpm
-        build/dist/scons-2.4.0.linux-i686.tar.gz
-        build/dist/scons-2.4.0.tar.gz
-        build/dist/scons-2.4.0.win32.exe
-        build/dist/scons-2.4.0.zip
-        build/dist/scons-doc-2.4.0.tar.gz
-        build/dist/scons-local-2.4.0.tar.gz
-        build/dist/scons-local-2.4.0.zip
-        build/dist/scons-src-2.4.0.tar.gz
-        build/dist/scons-src-2.4.0.zip
-        build/dist/scons_2.4.0-1_all.deb
+        build/dist/scons-2.4.1-1.noarch.rpm
+        build/dist/scons-2.4.1-1.src.rpm
+        build/dist/scons-2.4.1.linux-i686.tar.gz
+        build/dist/scons-2.4.1.tar.gz
+        build/dist/scons-2.4.1.win32.exe
+        build/dist/scons-2.4.1.zip
+        build/dist/scons-doc-2.4.1.tar.gz
+        build/dist/scons-local-2.4.1.tar.gz
+        build/dist/scons-local-2.4.1.zip
+        build/dist/scons-src-2.4.1.tar.gz
+        build/dist/scons-src-2.4.1.zip
+        build/dist/scons_2.4.1-1_all.deb
 
 The SConstruct file is supposed to be smart enough to avoid trying to build
 packages for which you don't have the proper utilities installed.  For
diff --git a/SConstruct b/SConstruct
index 6c90076..7b0e5aa 100644
--- a/SConstruct
+++ b/SConstruct
@@ -6,7 +6,7 @@
 copyright_years = '2001 - 2015'
 
 # This gets inserted into the man pages to reflect the month of release.
-month_year = 'September 2015'
+month_year = 'November 2015'
 
 #
 # Copyright (c) 2001 - 2015 The SCons Foundation
@@ -43,7 +43,7 @@ import tempfile
 import bootstrap
 
 project = 'scons'
-default_version = '2.4.0'
+default_version = '2.4.1'
 copyright = "Copyright (c) %s The SCons Foundation" % copyright_years
 
 platform = distutils.util.get_platform()
@@ -822,7 +822,7 @@ for p in [ scons ]:
 
     #
     # Now run everything in src_file through the sed command we
-    # concocted to expand SConstruct, 2.4.0, etc.
+    # concocted to expand SConstruct, 2.4.1, etc.
     #
     for b in src_files:
         s = p['filemap'].get(b, b)
diff --git a/bin/docs-create-example-outputs.py b/bin/docs-create-example-outputs.py
index 30dc0ee..6e59d9f 100644
--- a/bin/docs-create-example-outputs.py
+++ b/bin/docs-create-example-outputs.py
@@ -14,6 +14,6 @@ if __name__ == "__main__":
         print "OK"
     else:
         print "Not all example names and suffixes are unique! Please correct the errors listed above and try again."
-        sys.exit(0)
+        sys.exit(1)
     
     SConsExamples.createAllExampleOutputs(os.path.join('doc','user'))
diff --git a/bin/docs-validate.py b/bin/docs-validate.py
index c445c3f..f888c21 100644
--- a/bin/docs-validate.py
+++ b/bin/docs-validate.py
@@ -25,3 +25,4 @@ if __name__ == "__main__":
             print "OK"
         else:
             print "Validation failed! Please correct the errors above and try again."
+            sys.exit(1)
diff --git a/bin/import-test.py b/bin/import-test.py
index b1f0efa..93f1c62 100644
--- a/bin/import-test.py
+++ b/bin/import-test.py
@@ -25,7 +25,7 @@
 # """ triple-quotes will need to have their contents edited by hand.
 #
 
-__revision__ = "bin/import-test.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "bin/import-test.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 import sys
diff --git a/bin/linecount.py b/bin/linecount.py
index 84173fe..5b17780 100644
--- a/bin/linecount.py
+++ b/bin/linecount.py
@@ -23,7 +23,7 @@
 # interesting one for most purposes.
 from __future__ import division
 
-__revision__ = "bin/linecount.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "bin/linecount.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 
diff --git a/bin/restore.sh b/bin/restore.sh
index d5258b5..c393b00 100644
--- a/bin/restore.sh
+++ b/bin/restore.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env sh
 #
-# Simple hack script to restore __revision__, __COPYRIGHT_, 2.4.0
+# Simple hack script to restore __revision__, __COPYRIGHT_, 2.4.1
 # and other similar variables to what gets checked in to source.  This
 # comes in handy when people send in diffs based on the released source.
 #
@@ -24,7 +24,7 @@ for i in `find $DIRS -name '*.py'`; do
     ed $i <<EOF
 g/Copyright (c) 2001.*SCons Foundation/s//Copyright (c) 2001 - 2015 The SCons Foundation/p
 w
-/^__revision__ = /s/= .*/= "bin/restore.sh rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"/p
+/^__revision__ = /s/= .*/= "bin/restore.sh rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"/p
 w
 q
 EOF
@@ -35,7 +35,7 @@ for i in `find $DIRS -name 'scons.bat'`; do
     ed $i <<EOF
 g/Copyright (c) 2001.*SCons Foundation/s//Copyright (c) 2001 - 2015 The SCons Foundation/p
 w
-/^@REM src\/script\/scons.bat/s/@REM .* knight/@REM bin/restore.sh rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog/p
+/^@REM src\/script\/scons.bat/s/@REM .* knight/@REM bin/restore.sh rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog/p
 w
 q
 EOF
@@ -44,13 +44,13 @@ done
 for i in `find $DIRS -name '__init__.py' -o -name 'scons.py' -o -name 'sconsign.py'`; do
     header $i
     ed $i <<EOF
-/^__version__ = /s/= .*/= "2.4.0"/p
+/^__version__ = /s/= .*/= "2.4.1"/p
 w
-/^__build__ = /s/= .*/= "rel_2.4.0:3365:9259ea1c13d7"/p
+/^__build__ = /s/= .*/= "rel_2.4.1:3453:73fefd3ea0b0"/p
 w
-/^__buildsys__ = /s/= .*/= "hpmicrodog"/p
+/^__buildsys__ = /s/= .*/= "ubuntu1404-32bit"/p
 w
-/^__date__ = /s/= .*/= "2015/09/21 14:03:43"/p
+/^__date__ = /s/= .*/= "2015/11/09 03:25:05"/p
 w
 /^__developer__ = /s/= .*/= "bdbaddog"/p
 w
@@ -61,7 +61,7 @@ done
 for i in `find $DIRS -name 'setup.py'`; do
     header $i
     ed $i <<EOF
-/^ *version = /s/= .*/= "2.4.0",/p
+/^ *version = /s/= .*/= "2.4.1",/p
 w
 q
 EOF
@@ -72,9 +72,9 @@ for i in `find $DIRS -name '*.txt'`; do
     ed $i <<EOF
 g/Copyright (c) 2001.*SCons Foundation/s//Copyright (c) 2001 - 2015 The SCons Foundation/p
 w
-/# [^ ]* 0.96.[CD][0-9]* [0-9\/]* [0-9:]* knight$/s/.*/# bin/restore.sh rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog/p
+/# [^ ]* 0.96.[CD][0-9]* [0-9\/]* [0-9:]* knight$/s/.*/# bin/restore.sh rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog/p
 w
-/Version [0-9][0-9]*\.[0-9][0-9]*/s//Version 2.4.0/p
+/Version [0-9][0-9]*\.[0-9][0-9]*/s//Version 2.4.1/p
 w
 q
 EOF
diff --git a/bin/update-release-info.py b/bin/update-release-info.py
index 45b1bdf..510440d 100644
--- a/bin/update-release-info.py
+++ b/bin/update-release-info.py
@@ -57,7 +57,7 @@ In 'post' mode, files are prepared for the next release cycle:
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "bin/update-release-info.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "bin/update-release-info.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import sys
@@ -295,6 +295,7 @@ t = UpdateFile(os.path.join('src', 'Announce.txt'))
 if DEBUG: t.file = '/tmp/Announce.txt'
 t.sub('\nRELEASE .*', '\nRELEASE ' + version_string + ' - ' + t.new_date)
 
+
 # Update SConstruct
 
 t = UpdateFile('SConstruct')
diff --git a/doc/design/titlepage/SConsBuildBricks_path.svg b/doc/design/titlepage/SConsBuildBricks_path.svg
index ed0c60d..0d7f63e 100644
--- a/doc/design/titlepage/SConsBuildBricks_path.svg
+++ b/doc/design/titlepage/SConsBuildBricks_path.svg
@@ -14,9 +14,9 @@
    height="80.330002"
    id="svg2"
    sodipodi:version="0.32"
-   inkscape:version="0.48.1 r9760"
+   inkscape:version="0.48.4 r9939"
    version="1.0"
-   sodipodi:docname="SConsBuildBricks.svg"
+   sodipodi:docname="SConsBuildBricks_path.svg"
    inkscape:export-filename="Constructs-using-SCons.png"
    inkscape:export-xdpi="100"
    inkscape:export-ydpi="100">
@@ -77,24 +77,22 @@
           </cc:Agent>
         </dc:contributor>
         <cc:license
-           rdf:resource="http://creativecommons.org/licenses/by-nc-sa/2.0/" />
+           rdf:resource="http://creativecommons.org/licenses/by-sa/3.0/" />
       </cc:Work>
       <cc:License
-         rdf:about="http://creativecommons.org/licenses/by-nc-sa/2.5/">
+         rdf:about="http://creativecommons.org/licenses/by-sa/3.0/">
         <cc:permits
-           rdf:resource="http://web.resource.org/cc/Reproduction" />
+           rdf:resource="http://creativecommons.org/ns#Reproduction" />
         <cc:permits
-           rdf:resource="http://web.resource.org/cc/Distribution" />
+           rdf:resource="http://creativecommons.org/ns#Distribution" />
         <cc:requires
-           rdf:resource="http://web.resource.org/cc/Notice" />
+           rdf:resource="http://creativecommons.org/ns#Notice" />
         <cc:requires
-           rdf:resource="http://web.resource.org/cc/Attribution" />
-        <cc:prohibits
-           rdf:resource="http://web.resource.org/cc/CommercialUse" />
+           rdf:resource="http://creativecommons.org/ns#Attribution" />
         <cc:permits
-           rdf:resource="http://web.resource.org/cc/DerivativeWorks" />
+           rdf:resource="http://creativecommons.org/ns#DerivativeWorks" />
         <cc:requires
-           rdf:resource="http://web.resource.org/cc/ShareAlike" />
+           rdf:resource="http://creativecommons.org/ns#ShareAlike" />
       </cc:License>
     </rdf:RDF>
   </metadata>
diff --git a/doc/generated/builders.gen b/doc/generated/builders.gen
index 02dc04b..d49156f 100644
--- a/doc/generated/builders.gen
+++ b/doc/generated/builders.gen
@@ -505,20 +505,13 @@ env.InstallAs(target = ['../lib/libfoo.a', '../lib/libbar.a'],
     </term>
     <listitem>
 <para xmlns="http://www.scons.org/dbxsd/v1.0">
-Installs a versioned shared library. The <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSION"><envar>$SHLIBVERSION</envar></link>
-construction variable should be defined in the environment
-to confirm the version number in the library name.
-If <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSION"><envar>$SHLIBVERSION</envar></link> is not defined a warning will be issued
-and the name of the library will be parsed to derive the version. 
-The symlinks appropriate to the architecture will be generated.
+Installs a versioned shared library. The symlinks appropriate to the
+architecture will be generated based on symlinks of the source library.
 </para>
 
 <example_commands xmlns="http://www.scons.org/dbxsd/v1.0">
 env.InstallVersionedLib(target = '/usr/local/bin/foo',
               source = 'libxyz.1.5.2.so')
-env.InstallVersionedLib(target = '/usr/local/bin/foo',
-              source = 'libxyz.1.5.2.so',
-              SHLIBVERSION='1.5.2')
 </example_commands>
 </listitem>
   </varlistentry>
@@ -1257,7 +1250,7 @@ file as the second element. Normally the object file is ignored.
 This builder method is only
 provided when Microsoft Visual C++ is being used as the compiler.
 The PCH builder method is generally used in
-conjuction with the PCH construction variable to force object files to use
+conjunction with the PCH construction variable to force object files to use
 the precompiled header:
 </para>
 
@@ -1490,7 +1483,7 @@ the results shall be as the comments above say.
 <emphasis>Example 2.</emphasis>
 The <function xmlns="http://www.scons.org/dbxsd/v1.0">POTUpdate</function> builder may be used with no target specified, in which
 case default target <filename>messages.pot</filename> will be used. The
-default target may also be overriden by setting <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-POTDOMAIN"><envar>$POTDOMAIN</envar></link> construction
+default target may also be overridden by setting <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-POTDOMAIN"><envar>$POTDOMAIN</envar></link> construction
 variable or providing it as an override to <function xmlns="http://www.scons.org/dbxsd/v1.0">POTUpdate</function> builder:
 </para>
 <example_commands xmlns="http://www.scons.org/dbxsd/v1.0">    
@@ -1623,7 +1616,7 @@ Target nodes defined through <function xmlns="http://www.scons.org/dbxsd/v1.0">P
 (they're <literal>Ignore</literal>d from <literal>'.'</literal> node). Instead,
 they are added automatically to special <literal>Alias</literal> 
 (<literal>'po-update'</literal> by default). The alias name may be changed
-through the <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-POUPDATE_ALIAS"><envar>$POUPDATE_ALIAS</envar></link> construction variable.  You can easilly 
+through the <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-POUPDATE_ALIAS"><envar>$POUPDATE_ALIAS</envar></link> construction variable.  You can easily 
 update <literal>PO</literal> files in your project by <command>scons
 po-update</command>.
 </para>
@@ -1995,22 +1988,20 @@ For maximum portability, use the <function xmlns="http://www.scons.org/dbxsd/v1.
 When the <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSION"><envar>$SHLIBVERSION</envar></link> construction variable is defined a versioned
 shared library is created. This modifies the <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLINKFLAGS"><envar>$SHLINKFLAGS</envar></link> as required,
 adds the version number to the library name, and creates the symlinks that
-are needed. <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSION"><envar>$SHLIBVERSION</envar></link> needs to be of the form X.Y.Z, where X
-and Y are numbers, and Z is a number but can also contain letters to designate
-alpha, beta, or release candidate patch levels.
+are needed.
 </para>
 
 <example_commands xmlns="http://www.scons.org/dbxsd/v1.0">
 env.SharedLibrary(target = 'bar', source = ['bar.c', 'foo.o'], SHLIBVERSION='1.5.2')
 </example_commands>
 
-
 <para xmlns="http://www.scons.org/dbxsd/v1.0">
-This builder may create multiple links to the library. On a POSIX system,
-for the shared library libbar.so.2.3.1, the links created would be
-libbar.so and libbar.so.2; on a Darwin (OSX) system
-the library would be libbar.2.3.1.dylib and the link would be
-libbar.dylib.
+On a POSIX system, versions with a single token create exactly one symlink:
+libbar.so.6 would have symlinks libbar.so only.
+On a POSIX system, versions with two or more
+tokens create exactly two symlinks: libbar.so.2.3.1 would have symlinks
+libbar.so and libbar.so.2; on a Darwin (OSX) system the library would be
+libbar.2.3.1.dylib and the link would be libbar.dylib.
 </para>
 
 <para xmlns="http://www.scons.org/dbxsd/v1.0">
@@ -2564,7 +2555,7 @@ running <command>scons '.'</command>.</para></note>
 <para xmlns="http://www.scons.org/dbxsd/v1.0">
 Builds a Windows type library (<filename>.tlb</filename>)
 file from an input IDL file (<filename>.idl</filename>).
-In addition, it will build the associated inteface stub and
+In addition, it will build the associated interface stub and
 proxy source files,
 naming them according to the base name of the <filename>.idl</filename> file.
 For example,
diff --git a/doc/generated/examples/caching_ex-random_1.xml b/doc/generated/examples/caching_ex-random_1.xml
index e7aa631..6a0337b 100644
--- a/doc/generated/examples/caching_ex-random_1.xml
+++ b/doc/generated/examples/caching_ex-random_1.xml
@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <screen xmlns="http://www.scons.org/dbxsd/v1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.scons.org/dbxsd/v1.0 http://www.scons.org/dbxsd/v1.0/scons.xsd">% <userinput>scons -Q</userinput>
-cc -o f4.o -c f4.c
-cc -o f5.o -c f5.c
 cc -o f2.o -c f2.c
-cc -o f3.o -c f3.c
 cc -o f1.o -c f1.c
+cc -o f5.o -c f5.c
+cc -o f3.o -c f3.c
+cc -o f4.o -c f4.c
 cc -o prog f1.o f2.o f3.o f4.o f5.o
 </screen>
diff --git a/doc/generated/examples/troubleshoot_Dump_1.xml b/doc/generated/examples/troubleshoot_Dump_1.xml
index 248e85c..bf141a0 100644
--- a/doc/generated/examples/troubleshoot_Dump_1.xml
+++ b/doc/generated/examples/troubleshoot_Dump_1.xml
@@ -64,7 +64,11 @@ scons: Reading SConscript files ...
   '_LIBDIRFLAGS': '$( ${_concat(LIBDIRPREFIX, LIBPATH, LIBDIRSUFFIX, __env__, RDirs, TARGET, SOURCE)} $)',
   '_LIBFLAGS': '${_concat(LIBLINKPREFIX, LIBS, LIBLINKSUFFIX, __env__)}',
   '__DRPATH': '$_DRPATH',
+  '__DSHLIBVERSIONFLAGS': '${__libversionflags(__env__,"DSHLIBVERSION","_DSHLIBVERSIONFLAGS")}',
+  '__LDMODULEVERSIONFLAGS': '${__libversionflags(__env__,"LDMODULEVERSION","_LDMODULEVERSIONFLAGS")}',
   '__RPATH': '$_RPATH',
+  '__SHLIBVERSIONFLAGS': '${__libversionflags(__env__,"SHLIBVERSION","_SHLIBVERSIONFLAGS")}',
+  '__libversionflags': &lt;function __libversionflags at 0x700000&amp;gt;,
   '_concat': &lt;function _concat at 0x700000&amp;gt;,
   '_defines': &lt;function _defines at 0x700000&amp;gt;,
   '_stripixes': &lt;function _stripixes at 0x700000&amp;gt;}
diff --git a/doc/generated/examples/troubleshoot_Dump_2.xml b/doc/generated/examples/troubleshoot_Dump_2.xml
index d6fa404..0ae8fe1 100644
--- a/doc/generated/examples/troubleshoot_Dump_2.xml
+++ b/doc/generated/examples/troubleshoot_Dump_2.xml
@@ -97,6 +97,10 @@ scons: Reading SConscript files ...
   '_LIBDIRFLAGS': '$( ${_concat(LIBDIRPREFIX, LIBPATH, LIBDIRSUFFIX, __env__, RDirs, TARGET, SOURCE)} $)',
   '_LIBFLAGS': '${_concat(LIBLINKPREFIX, LIBS, LIBLINKSUFFIX, __env__)}',
   '_MSVC_OUTPUT_FLAG': &lt;function msvc_output_flag at 0x700000&amp;gt;,
+  '__DSHLIBVERSIONFLAGS': '${__libversionflags(__env__,"DSHLIBVERSION","_DSHLIBVERSIONFLAGS")}',
+  '__LDMODULEVERSIONFLAGS': '${__libversionflags(__env__,"LDMODULEVERSION","_LDMODULEVERSIONFLAGS")}',
+  '__SHLIBVERSIONFLAGS': '${__libversionflags(__env__,"SHLIBVERSION","_SHLIBVERSIONFLAGS")}',
+  '__libversionflags': &lt;function __libversionflags at 0x700000&amp;gt;,
   '_concat': &lt;function _concat at 0x700000&amp;gt;,
   '_defines': &lt;function _defines at 0x700000&amp;gt;,
   '_stripixes': &lt;function _stripixes at 0x700000&amp;gt;}
diff --git a/doc/generated/examples/troubleshoot_explain1_3.xml b/doc/generated/examples/troubleshoot_explain1_3.xml
index 246ee56..3d8592d 100644
--- a/doc/generated/examples/troubleshoot_explain1_3.xml
+++ b/doc/generated/examples/troubleshoot_explain1_3.xml
@@ -3,5 +3,5 @@
 cp file.in file.oout
 
 scons: warning: Cannot find target file.out after building
-File "/home/bdbaddog/scons/as_scons/bootstrap/src/script/scons.py", line 199, in &lt;module&gt;
+File "/scons/as_scons/bootstrap/src/script/scons.py", line 199, in &lt;module&gt;
 </screen>
diff --git a/doc/generated/functions.gen b/doc/generated/functions.gen
index 3ad36e5..e80c1c9 100644
--- a/doc/generated/functions.gen
+++ b/doc/generated/functions.gen
@@ -2565,10 +2565,10 @@ sources = Glob('*.cpp', exclude=['os_*_specific_*.cpp']) + Glob('os_%s_specific_
   </varlistentry>
   <varlistentry id="f-Help">
     <term>
-      <literal>Help(text)</literal>
+      <literal>Help(text, append=False)</literal>
     </term>
     <term>
-      <literal>env.Help(text)</literal>
+      <literal>env.Help(text, append=False)</literal>
     </term>
     <listitem>
 <para xmlns="http://www.scons.org/dbxsd/v1.0">
@@ -2576,12 +2576,18 @@ This specifies help text to be printed if the
 <option>-h</option>
 argument is given to
 <filename xmlns="http://www.scons.org/dbxsd/v1.0">scons</filename>.
-If
+If 
 <function xmlns="http://www.scons.org/dbxsd/v1.0">Help</function>
-is called multiple times, the text is appended together in the order
-that
+is called multiple times, the text is appended together in the order that 
 <function xmlns="http://www.scons.org/dbxsd/v1.0">Help</function>
-is called.
+is called. With append set to False, any 
+<function xmlns="http://www.scons.org/dbxsd/v1.0">Help</function>
+text generated with 
+<function xmlns="http://www.scons.org/dbxsd/v1.0">AddOption</function>
+is clobbered. If append is True, the AddOption help is prepended to the help
+string, thus preserving the 
+<option>-h</option>
+message.
 </para>
 </listitem>
   </varlistentry>
diff --git a/doc/generated/tools.gen b/doc/generated/tools.gen
index db89475..ba12966 100644
--- a/doc/generated/tools.gen
+++ b/doc/generated/tools.gen
@@ -129,6 +129,14 @@ Sets construction variables for generic POSIX C++ compilers.
 </para>
 <para>Sets:  &cv-link-CPPDEFPREFIX;, &cv-link-CPPDEFSUFFIX;, &cv-link-CXX;, &cv-link-CXXCOM;, &cv-link-CXXFILESUFFIX;, &cv-link-CXXFLAGS;, &cv-link-INCPREFIX;, &cv-link-INCSUFFIX;, &cv-link-OBJSUFFIX;, &cv-link-SHCXX;, &cv-link-SHCXXCOM;, &cv-link-SHCXXFLAGS;, &cv-link-SHOBJSUFFIX;.</para><para>Uses:  &cv-link-CXXCOMSTR;.</para></listitem>
   </varlistentry>
+  <varlistentry id="t-cyglink">
+    <term>cyglink</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+Set construction variables for cygwin linker/loader.
+</para>
+<para>Sets:  &cv-link-IMPLIBPREFIX;, &cv-link-IMPLIBSUFFIX;, &cv-link-LDMODULEVERSIONFLAGS;, &cv-link-LINKFLAGS;, &cv-link-RPATHPREFIX;, &cv-link-RPATHSUFFIX;, &cv-link-SHLIBPREFIX;, &cv-link-SHLIBSUFFIX;, &cv-link-SHLIBVERSIONFLAGS;, &cv-link-SHLINKCOM;, &cv-link-SHLINKFLAGS;, &cv-link-_LDMODULEVERSIONFLAGS;, &cv-link-_SHLIBVERSIONFLAGS;.</para></listitem>
+  </varlistentry>
   <varlistentry id="t-default">
     <term>default</term>
     <listitem>
@@ -395,7 +403,7 @@ Sets construction variables for the D language compiler GDC.
     <listitem>
 <para xmlns="http://www.scons.org/dbxsd/v1.0">
 This is actually a toolset, which supports internationalization and
-localization of sofware being constructed with SCons. The toolset loads
+localization of software being constructed with SCons. The toolset loads
 following tools:
 </para>
 
@@ -454,7 +462,7 @@ Sets construction variables for the GNU F95/F2003 GNU compiler.
 <para xmlns="http://www.scons.org/dbxsd/v1.0">
 Set construction variables for GNU linker/loader.
 </para>
-<para>Sets:  &cv-link-RPATHPREFIX;, &cv-link-RPATHSUFFIX;, &cv-link-SHLINKFLAGS;.</para></listitem>
+<para>Sets:  &cv-link-LDMODULEVERSIONFLAGS;, &cv-link-RPATHPREFIX;, &cv-link-RPATHSUFFIX;, &cv-link-SHLIBVERSIONFLAGS;, &cv-link-SHLINKFLAGS;, &cv-link-_LDMODULESONAME;, &cv-link-_SHLIBSONAME;.</para></listitem>
   </varlistentry>
   <varlistentry id="t-gs">
     <term>gs</term>
@@ -623,7 +631,7 @@ Sets construction variables for the <application xmlns="http://www.scons.org/dbx
 <para xmlns="http://www.scons.org/dbxsd/v1.0">
 Sets construction variables for generic POSIX linkers.
 </para>
-<para>Sets:  &cv-link-LDMODULE;, &cv-link-LDMODULECOM;, &cv-link-LDMODULEFLAGS;, &cv-link-LDMODULEPREFIX;, &cv-link-LDMODULESUFFIX;, &cv-link-LIBDIRPREFIX;, &cv-link-LIBDIRSUFFIX;, &cv-link-LIBLINKPREFIX;, &cv-link-LIBLINKSUFFIX;, &cv-link-LINK;, &cv-link-LINKCOM;, &cv-link-LINKFLAGS;, &cv-link-SHLIBSUFFIX;, &cv-link-SHLINK;, &cv-link-SHLINKCOM;, &cv-link-SHLINKFLAGS;.</para><para>Uses:  &cv-link-LDMODULECOMSTR;, &cv-link-LINKCOMSTR;, &cv-link-SHLINKCOMSTR;.</para></listitem>
+<para>Sets:  &cv-link-LDMODULE;, &cv-link-LDMODULECOM;, &cv-link-LDMODULEFLAGS;, &cv-link-LDMODULENOVERSIONSYMLINKS;, &cv-link-LDMODULEPREFIX;, &cv-link-LDMODULESUFFIX;, &cv-link-LDMODULEVERSION;, &cv-link-LDMODULEVERSIONFLAGS;, &cv-link-LIBDIRPREFIX;, &cv-link-LIBDIRSUFFIX;, &cv-link-LIBLINKPREFIX;, &cv-link-LIBLINKSUFFIX;, &cv-link-LINK;, &cv-link-LINKCOM;, &cv-link-LINKFLAGS;, &cv-link-SHLIBSUFFIX;, &cv-link-SHLINK;, &cv-link-SHLINKCOM;, &cv-link-SHLINKFLAGS;, &cv-link-__LDMODULEVERSIONFLAGS;, &cv-link-__SHLIBVERSIONFLAGS;.</para><para>Uses:  &cv-link-LDMODULECOMSTR;, &cv-link-LINKCOMSTR;, &cv-link-SHLINKCOMSTR;.</para></listitem>
   </varlistentry>
   <varlistentry id="t-linkloc">
     <term>linkloc</term>
@@ -772,19 +780,19 @@ Sets construction variables for the
 </para>
 <para>Sets:  &cv-link-AS;, &cv-link-ASCOM;, &cv-link-ASFLAGS;, &cv-link-ASPPCOM;, &cv-link-ASPPFLAGS;.</para><para>Uses:  &cv-link-ASCOMSTR;, &cv-link-ASPPCOMSTR;.</para></listitem>
   </varlistentry>
-  <varlistentry id="t-packaging">
-    <term>packaging</term>
+  <varlistentry id="t-Packaging">
+    <term>Packaging</term>
     <listitem>
 <para xmlns="http://www.scons.org/dbxsd/v1.0">
-A framework for building binary and source packages.
+Sets construction variables for the <function xmlns="http://www.scons.org/dbxsd/v1.0">Package</function> Builder.
 </para>
 </listitem>
   </varlistentry>
-  <varlistentry id="t-Packaging">
-    <term>Packaging</term>
+  <varlistentry id="t-packaging">
+    <term>packaging</term>
     <listitem>
 <para xmlns="http://www.scons.org/dbxsd/v1.0">
-Sets construction variables for the <function xmlns="http://www.scons.org/dbxsd/v1.0">Package</function> Builder.
+A framework for building binary and source packages.
 </para>
 </listitem>
   </varlistentry>
@@ -901,7 +909,7 @@ Sets construction variables for the SGI linker.
 <para xmlns="http://www.scons.org/dbxsd/v1.0">
 Sets construction variables for the Sun library archiver.
 </para>
-<para>Sets:  &cv-link-AR;, &cv-link-ARCOM;, &cv-link-ARFLAGS;, &cv-link-LIBPREFIX;, &cv-link-LIBSUFFIX;, &cv-link-SHLINK;, &cv-link-SHLINKCOM;, &cv-link-SHLINKFLAGS;.</para><para>Uses:  &cv-link-ARCOMSTR;, &cv-link-SHLINKCOMSTR;.</para></listitem>
+<para>Sets:  &cv-link-AR;, &cv-link-ARCOM;, &cv-link-ARFLAGS;, &cv-link-LIBPREFIX;, &cv-link-LIBSUFFIX;.</para><para>Uses:  &cv-link-ARCOMSTR;.</para></listitem>
   </varlistentry>
   <varlistentry id="t-suncXX">
     <term>sunc++</term>
diff --git a/doc/generated/tools.mod b/doc/generated/tools.mod
index 5a5795a..2ee2270 100644
--- a/doc/generated/tools.mod
+++ b/doc/generated/tools.mod
@@ -22,6 +22,7 @@ THIS IS AN AUTOMATICALLY-GENERATED FILE.  DO NOT EDIT.
 <!ENTITY t-cvf "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>cvf</literal>">
 <!ENTITY t-CVS "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>CVS</literal>">
 <!ENTITY t-cXX "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>cXX</literal>">
+<!ENTITY t-cyglink "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>cyglink</literal>">
 <!ENTITY t-default "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>default</literal>">
 <!ENTITY t-dmd "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>dmd</literal>">
 <!ENTITY t-docbook "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>docbook</literal>">
@@ -77,8 +78,8 @@ THIS IS AN AUTOMATICALLY-GENERATED FILE.  DO NOT EDIT.
 <!ENTITY t-mwcc "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>mwcc</literal>">
 <!ENTITY t-mwld "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>mwld</literal>">
 <!ENTITY t-nasm "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>nasm</literal>">
-<!ENTITY t-packaging "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>packaging</literal>">
 <!ENTITY t-Packaging "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>Packaging</literal>">
+<!ENTITY t-packaging "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>packaging</literal>">
 <!ENTITY t-pdf "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>pdf</literal>">
 <!ENTITY t-pdflatex "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>pdflatex</literal>">
 <!ENTITY t-pdftex "<literal xmlns='http://www.scons.org/dbxsd/v1.0'>pdftex</literal>">
@@ -132,6 +133,7 @@ THIS IS AN AUTOMATICALLY-GENERATED FILE.  DO NOT EDIT.
 <!ENTITY t-link-cvf "<link linkend='t-cvf' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>cvf</literal></link>">
 <!ENTITY t-link-CVS "<link linkend='t-CVS' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>CVS</literal></link>">
 <!ENTITY t-link-cXX "<link linkend='t-cXX' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>cXX</literal></link>">
+<!ENTITY t-link-cyglink "<link linkend='t-cyglink' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>cyglink</literal></link>">
 <!ENTITY t-link-default "<link linkend='t-default' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>default</literal></link>">
 <!ENTITY t-link-dmd "<link linkend='t-dmd' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>dmd</literal></link>">
 <!ENTITY t-link-docbook "<link linkend='t-docbook' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>docbook</literal></link>">
@@ -187,8 +189,8 @@ THIS IS AN AUTOMATICALLY-GENERATED FILE.  DO NOT EDIT.
 <!ENTITY t-link-mwcc "<link linkend='t-mwcc' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>mwcc</literal></link>">
 <!ENTITY t-link-mwld "<link linkend='t-mwld' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>mwld</literal></link>">
 <!ENTITY t-link-nasm "<link linkend='t-nasm' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>nasm</literal></link>">
-<!ENTITY t-link-packaging "<link linkend='t-packaging' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>packaging</literal></link>">
 <!ENTITY t-link-Packaging "<link linkend='t-Packaging' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>Packaging</literal></link>">
+<!ENTITY t-link-packaging "<link linkend='t-packaging' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>packaging</literal></link>">
 <!ENTITY t-link-pdf "<link linkend='t-pdf' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>pdf</literal></link>">
 <!ENTITY t-link-pdflatex "<link linkend='t-pdflatex' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>pdflatex</literal></link>">
 <!ENTITY t-link-pdftex "<link linkend='t-pdftex' xmlns='http://www.scons.org/dbxsd/v1.0'><literal>pdftex</literal></link>">
diff --git a/doc/generated/variables.gen b/doc/generated/variables.gen
index 04c3efe..b377102 100644
--- a/doc/generated/variables.gen
+++ b/doc/generated/variables.gen
@@ -13,6 +13,24 @@
 ]>
 
 <variablelist xmlns="http://www.scons.org/dbxsd/v1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.scons.org/dbxsd/v1.0 http://www.scons.org/dbxsd/v1.0/scons.xsd">
+  <varlistentry id="cv-__LDMODULEVERSIONFLAGS">
+    <term>__LDMODULEVERSIONFLAGS</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+This construction variable automatically introduces <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-_LDMODULEVERSIONFLAGS"><envar>$_LDMODULEVERSIONFLAGS</envar></link>
+if <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-LDMODULEVERSION"><envar>$LDMODULEVERSION</envar></link> is set. Othervise it evaluates to an empty string.
+</para>
+</listitem>
+  </varlistentry>
+  <varlistentry id="cv-__SHLIBVERSIONFLAGS">
+    <term>__SHLIBVERSIONFLAGS</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+This construction variable automatically introduces <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-_SHLIBVERSIONFLAGS"><envar>$_SHLIBVERSIONFLAGS</envar></link>
+if <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSION"><envar>$SHLIBVERSION</envar></link> is set. Othervise it evaluates to an empty string.
+</para>
+</listitem>
+  </varlistentry>
   <varlistentry id="cv-AR">
     <term>AR</term>
     <listitem>
@@ -2874,6 +2892,52 @@ The default list is:
 </example_commands>
 </listitem>
   </varlistentry>
+  <varlistentry id="cv-IMPLIBNOVERSIONSYMLINKS">
+    <term>IMPLIBNOVERSIONSYMLINKS</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+Used to override <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBNOVERSIONSYMLINKS"><envar>$SHLIBNOVERSIONSYMLINKS</envar></link>/<link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-LDMODULENOVERSIONSYMLINKS"><envar>$LDMODULENOVERSIONSYMLINKS</envar></link> when 
+creating versioned import library for a shared library/loadable module. If not defined,
+then <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBNOVERSIONSYMLINKS"><envar>$SHLIBNOVERSIONSYMLINKS</envar></link>/<link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-LDMODULENOVERSIONSYMLINKS"><envar>$LDMODULENOVERSIONSYMLINKS</envar></link> is used to determine
+whether to disable symlink generation or not.
+</para>
+</listitem>
+  </varlistentry>
+  <varlistentry id="cv-IMPLIBPREFIX">
+    <term>IMPLIBPREFIX</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+The prefix used for import library names. For example, cygwin uses import
+libraries (<literal>libfoo.dll.a</literal>) in pair with dynamic libraries
+(<literal>cygfoo.dll</literal>). The <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="t-cyglink"><literal>cyglink</literal></link> linker sets
+<link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-IMPLIBPREFIX"><envar>$IMPLIBPREFIX</envar></link> to <literal>'lib'</literal> and <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBPREFIX"><envar>$SHLIBPREFIX</envar></link>
+to <literal>'cyg'</literal>.
+</para>
+</listitem>
+  </varlistentry>
+  <varlistentry id="cv-IMPLIBSUFFIX">
+    <term>IMPLIBSUFFIX</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+The suffix used for import library names. For example, cygwin uses import
+libraries (<literal>libfoo.dll.a</literal>) in pair with dynamic libraries
+(<literal>cygfoo.dll</literal>). The <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="t-cyglink"><literal>cyglink</literal></link> linker sets
+<link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-IMPLIBSUFFIX"><envar>$IMPLIBSUFFIX</envar></link> to <literal>'.dll.a'</literal> and <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBSUFFIX"><envar>$SHLIBSUFFIX</envar></link>
+to <literal>'.dll'</literal>.
+</para>
+</listitem>
+  </varlistentry>
+  <varlistentry id="cv-IMPLIBVERSION">
+    <term>IMPLIBVERSION</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+Used to override <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSION"><envar>$SHLIBVERSION</envar></link>/<link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-LDMODULEVERSION"><envar>$LDMODULEVERSION</envar></link> when
+generating versioned import library for a shared library/loadable module. If
+undefined, the <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSION"><envar>$SHLIBVERSION</envar></link>/<link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-LDMODULEVERSION"><envar>$LDMODULEVERSION</envar></link> is used to
+determine the version of versioned import library. 
+</para>
+</listitem>
+  </varlistentry>
   <varlistentry id="cv-IMPLICIT_COMMAND_DEPENDENCIES">
     <term>IMPLICIT_COMMAND_DEPENDENCIES</term>
     <listitem>
@@ -3408,6 +3472,15 @@ General user options passed to the linker for building loadable modules.
 </para>
 </listitem>
   </varlistentry>
+  <varlistentry id="cv-LDMODULENOVERSIONSYMLINKS">
+    <term>LDMODULENOVERSIONSYMLINKS</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+Instructs the <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="b-LoadableModule"><function>LoadableModule</function></link> builder to not automatically create symlinks
+for versioned modules. Defaults to <literal>$SHLIBNOVERSIONSYMLINKS</literal>
+</para>
+</listitem>
+  </varlistentry>
   <varlistentry id="cv-LDMODULEPREFIX">
     <term>LDMODULEPREFIX</term>
     <listitem>
@@ -3419,6 +3492,16 @@ the same as <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBPREFI
 </para>
 </listitem>
   </varlistentry>
+  <varlistentry id="cv-_LDMODULESONAME">
+    <term>_LDMODULESONAME</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+A macro that automatically generates loadable module's SONAME based on $TARGET,
+$LDMODULEVERSION and $LDMODULESUFFIX. Used by <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="b-LoadableModule"><function>LoadableModule</function></link> builder
+when the linker tool supports SONAME (e.g. <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="t-gnulink"><literal>gnulink</literal></link>).
+</para>
+</listitem>
+  </varlistentry>
   <varlistentry id="cv-LDMODULESUFFIX">
     <term>LDMODULESUFFIX</term>
     <listitem>
@@ -3430,6 +3513,42 @@ the same as $SHLIBSUFFIX.
 </para>
 </listitem>
   </varlistentry>
+  <varlistentry id="cv-LDMODULEVERSION">
+    <term>LDMODULEVERSION</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+When this construction variable is defined, a versioned loadable module
+is created by <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="b-LoadableModule"><function>LoadableModule</function></link> builder. This activates the
+<link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-_LDMODULEVERSIONFLAGS"><envar>$_LDMODULEVERSIONFLAGS</envar></link> and thus modifies the <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-LDMODULECOM"><envar>$LDMODULECOM</envar></link> as
+required, adds the version number to the library name, and creates the symlinks
+that are needed. <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-LDMODULEVERSION"><envar>$LDMODULEVERSION</envar></link> versions should exist in the same
+format as <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSION"><envar>$SHLIBVERSION</envar></link>.
+</para>
+</listitem>
+  </varlistentry>
+  <varlistentry id="cv-LDMODULEVERSIONFLAGS">
+    <term>LDMODULEVERSIONFLAGS</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+Extra flags added to <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-LDMODULECOM"><envar>$LDMODULECOM</envar></link> when building versioned
+<link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="b-LoadableModule"><function>LoadableModule</function></link>. These flags are only used when <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-LDMODULEVERSION"><envar>$LDMODULEVERSION</envar></link> is
+set.
+</para>
+</listitem>
+  </varlistentry>
+  <varlistentry id="cv-_LDMODULEVERSIONFLAGS">
+    <term>_LDMODULEVERSIONFLAGS</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+This macro automatically introduces extra flags to <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-LDMODULECOM"><envar>$LDMODULECOM</envar></link> when
+building versioned <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="b-LoadableModule"><function>LoadableModule</function></link> (that is when
+<link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-LDMODULEVERSION"><envar>$LDMODULEVERSION</envar></link> is set). <literal>_LDMODULEVERSIONFLAGS</literal>
+usually adds <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSIONFLAGS"><envar>$SHLIBVERSIONFLAGS</envar></link> and some extra dynamically generated
+options (such as <literal>-Wl,-soname=$_LDMODULESONAME</literal>).  It is unused
+by plain (unversioned) loadable modules.
+</para>
+</listitem>
+  </varlistentry>
   <varlistentry id="cv-LEX">
     <term>LEX</term>
     <listitem>
@@ -6385,6 +6504,15 @@ TODO
 </para>
 </listitem>
   </varlistentry>
+  <varlistentry id="cv-SHLIBNOVERSIONSYMLINKS">
+    <term>SHLIBNOVERSIONSYMLINKS</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+Instructs the <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="b-SharedLibrary"><function>SharedLibrary</function></link> builder to not create symlinks for versioned
+shared libraries.
+</para>
+</listitem>
+  </varlistentry>
   <varlistentry id="cv-SHLIBPREFIX">
     <term>SHLIBPREFIX</term>
     <listitem>
@@ -6393,6 +6521,16 @@ The prefix used for shared library file names.
 </para>
 </listitem>
   </varlistentry>
+  <varlistentry id="cv-_SHLIBSONAME">
+    <term>_SHLIBSONAME</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+A macro that automatically generates shared library's SONAME based on $TARGET,
+$SHLIBVERSION and $SHLIBSUFFIX. Used by <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="b-SharedLibrary"><function>SharedLibrary</function></link> builder when
+the linker tool supports SONAME (e.g. <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="t-gnulink"><literal>gnulink</literal></link>).
+</para>
+</listitem>
+  </varlistentry>
   <varlistentry id="cv-SHLIBSUFFIX">
     <term>SHLIBSUFFIX</term>
     <listitem>
@@ -6406,11 +6544,35 @@ The suffix used for shared library file names.
     <listitem>
 <para xmlns="http://www.scons.org/dbxsd/v1.0">
 When this construction variable is defined, a versioned shared library
-is created. This modifies the <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLINKFLAGS"><envar>$SHLINKFLAGS</envar></link> as required, adds
-the version number to the library name, and creates the symlinks that
-are needed. <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSION"><envar>$SHLIBVERSION</envar></link> needs to be of the form X.Y.Z,
-where X and Y are numbers, and Z is a number but can also contain
-letters to designate alpha, beta, or release candidate patch levels.
+is created by <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="b-SharedLibrary"><function>SharedLibrary</function></link> builder. This activates the
+<link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-_SHLIBVERSIONFLAGS"><envar>$_SHLIBVERSIONFLAGS</envar></link> and thus modifies the <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLINKCOM"><envar>$SHLINKCOM</envar></link> as
+required, adds the version number to the library name, and creates the symlinks
+that are needed.  <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSION"><envar>$SHLIBVERSION</envar></link> versions should exist as alpha-numeric,
+decimal-delimited values as defined by the regular expression "\w+[\.\w+]*".
+Example <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSION"><envar>$SHLIBVERSION</envar></link> values include '1', '1.2.3', and '1.2.gitaa412c8b'.
+</para>
+</listitem>
+  </varlistentry>
+  <varlistentry id="cv-_SHLIBVERSIONFLAGS">
+    <term>_SHLIBVERSIONFLAGS</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+This macro automatically introduces extra flags to <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLINKCOM"><envar>$SHLINKCOM</envar></link> when
+building versioned <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="b-SharedLibrary"><function>SharedLibrary</function></link> (that is when <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSION"><envar>$SHLIBVERSION</envar></link>
+is set). <literal>_SHLIBVERSIONFLAGS</literal> usually adds <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSIONFLAGS"><envar>$SHLIBVERSIONFLAGS</envar></link>
+and some extra dynamically generated options (such as
+<literal>-Wl,-soname=$_SHLIBSONAME</literal>. It is unused by "plain"
+(unversioned) shared libraries.
+</para>
+</listitem>
+  </varlistentry>
+  <varlistentry id="cv-SHLIBVERSIONFLAGS">
+    <term>SHLIBVERSIONFLAGS</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+Extra flags added to <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLINKCOM"><envar>$SHLINKCOM</envar></link> when building versioned
+<link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="b-SharedLibrary"><function>SharedLibrary</function></link>. These flags are only used when <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="cv-SHLIBVERSION"><envar>$SHLIBVERSION</envar></link> is
+set.
 </para>
 </listitem>
   </varlistentry>
@@ -6484,6 +6646,18 @@ The suffix used for shared object file names.
 </para>
 </listitem>
   </varlistentry>
+  <varlistentry id="cv-SONAME">
+    <term>SONAME</term>
+    <listitem>
+<para xmlns="http://www.scons.org/dbxsd/v1.0">
+Variable used to hard-code SONAME for versioned shared library/loadable module.
+<example_commands>
+env.SharedLibrary('test', 'test.c', SHLIBVERSION='0.1.2', SONAME='libtest.so.2')
+</example_commands>
+The variable is used, for example, by <link xmlns="http://www.scons.org/dbxsd/v1.0" linkend="t-gnulink"><literal>gnulink</literal></link> linker tool.
+</para>
+</listitem>
+  </varlistentry>
   <varlistentry id="cv-SOURCE">
     <term>SOURCE</term>
     <listitem>
diff --git a/doc/generated/variables.mod b/doc/generated/variables.mod
index fc12a92..955a9eb 100644
--- a/doc/generated/variables.mod
+++ b/doc/generated/variables.mod
@@ -8,6 +8,8 @@ THIS IS AN AUTOMATICALLY-GENERATED FILE.  DO NOT EDIT.
 
 -->
 
+<!ENTITY cv-__LDMODULEVERSIONFLAGS "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$__LDMODULEVERSIONFLAGS</envar>">
+<!ENTITY cv-__SHLIBVERSIONFLAGS "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$__SHLIBVERSIONFLAGS</envar>">
 <!ENTITY cv-AR "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$AR</envar>">
 <!ENTITY cv-ARCHITECTURE "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$ARCHITECTURE</envar>">
 <!ENTITY cv-ARCOM "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$ARCOM</envar>">
@@ -216,6 +218,10 @@ THIS IS AN AUTOMATICALLY-GENERATED FILE.  DO NOT EDIT.
 <!ENTITY cv-HOST_ARCH "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$HOST_ARCH</envar>">
 <!ENTITY cv-HOST_OS "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$HOST_OS</envar>">
 <!ENTITY cv-IDLSUFFIXES "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$IDLSUFFIXES</envar>">
+<!ENTITY cv-IMPLIBNOVERSIONSYMLINKS "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$IMPLIBNOVERSIONSYMLINKS</envar>">
+<!ENTITY cv-IMPLIBPREFIX "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$IMPLIBPREFIX</envar>">
+<!ENTITY cv-IMPLIBSUFFIX "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$IMPLIBSUFFIX</envar>">
+<!ENTITY cv-IMPLIBVERSION "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$IMPLIBVERSION</envar>">
 <!ENTITY cv-IMPLICIT_COMMAND_DEPENDENCIES "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$IMPLICIT_COMMAND_DEPENDENCIES</envar>">
 <!ENTITY cv-INCPREFIX "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$INCPREFIX</envar>">
 <!ENTITY cv-INCSUFFIX "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$INCSUFFIX</envar>">
@@ -253,8 +259,13 @@ THIS IS AN AUTOMATICALLY-GENERATED FILE.  DO NOT EDIT.
 <!ENTITY cv-LDMODULECOM "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$LDMODULECOM</envar>">
 <!ENTITY cv-LDMODULECOMSTR "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$LDMODULECOMSTR</envar>">
 <!ENTITY cv-LDMODULEFLAGS "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$LDMODULEFLAGS</envar>">
+<!ENTITY cv-LDMODULENOVERSIONSYMLINKS "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$LDMODULENOVERSIONSYMLINKS</envar>">
 <!ENTITY cv-LDMODULEPREFIX "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$LDMODULEPREFIX</envar>">
+<!ENTITY cv-_LDMODULESONAME "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$_LDMODULESONAME</envar>">
 <!ENTITY cv-LDMODULESUFFIX "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$LDMODULESUFFIX</envar>">
+<!ENTITY cv-LDMODULEVERSION "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$LDMODULEVERSION</envar>">
+<!ENTITY cv-LDMODULEVERSIONFLAGS "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$LDMODULEVERSIONFLAGS</envar>">
+<!ENTITY cv-_LDMODULEVERSIONFLAGS "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$_LDMODULEVERSIONFLAGS</envar>">
 <!ENTITY cv-LEX "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$LEX</envar>">
 <!ENTITY cv-LEXCOM "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$LEXCOM</envar>">
 <!ENTITY cv-LEXCOMSTR "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$LEXCOMSTR</envar>">
@@ -505,15 +516,20 @@ THIS IS AN AUTOMATICALLY-GENERATED FILE.  DO NOT EDIT.
 <!ENTITY cv-SHFORTRANPPCOM "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SHFORTRANPPCOM</envar>">
 <!ENTITY cv-SHFORTRANPPCOMSTR "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SHFORTRANPPCOMSTR</envar>">
 <!ENTITY cv-SHLIBEMITTER "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SHLIBEMITTER</envar>">
+<!ENTITY cv-SHLIBNOVERSIONSYMLINKS "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SHLIBNOVERSIONSYMLINKS</envar>">
 <!ENTITY cv-SHLIBPREFIX "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SHLIBPREFIX</envar>">
+<!ENTITY cv-_SHLIBSONAME "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$_SHLIBSONAME</envar>">
 <!ENTITY cv-SHLIBSUFFIX "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SHLIBSUFFIX</envar>">
 <!ENTITY cv-SHLIBVERSION "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SHLIBVERSION</envar>">
+<!ENTITY cv-_SHLIBVERSIONFLAGS "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$_SHLIBVERSIONFLAGS</envar>">
+<!ENTITY cv-SHLIBVERSIONFLAGS "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SHLIBVERSIONFLAGS</envar>">
 <!ENTITY cv-SHLINK "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SHLINK</envar>">
 <!ENTITY cv-SHLINKCOM "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SHLINKCOM</envar>">
 <!ENTITY cv-SHLINKCOMSTR "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SHLINKCOMSTR</envar>">
 <!ENTITY cv-SHLINKFLAGS "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SHLINKFLAGS</envar>">
 <!ENTITY cv-SHOBJPREFIX "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SHOBJPREFIX</envar>">
 <!ENTITY cv-SHOBJSUFFIX "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SHOBJSUFFIX</envar>">
+<!ENTITY cv-SONAME "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SONAME</envar>">
 <!ENTITY cv-SOURCE "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SOURCE</envar>">
 <!ENTITY cv-SOURCE_URL "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SOURCE_URL</envar>">
 <!ENTITY cv-SOURCES "<envar xmlns='http://www.scons.org/dbxsd/v1.0'>$SOURCES</envar>">
@@ -646,6 +662,8 @@ THIS IS AN AUTOMATICALLY-GENERATED FILE.  DO NOT EDIT.
 
 -->
 
+<!ENTITY cv-link-__LDMODULEVERSIONFLAGS "<link linkend='cv-__LDMODULEVERSIONFLAGS' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$__LDMODULEVERSIONFLAGS</envar></link>">
+<!ENTITY cv-link-__SHLIBVERSIONFLAGS "<link linkend='cv-__SHLIBVERSIONFLAGS' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$__SHLIBVERSIONFLAGS</envar></link>">
 <!ENTITY cv-link-AR "<link linkend='cv-AR' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$AR</envar></link>">
 <!ENTITY cv-link-ARCHITECTURE "<link linkend='cv-ARCHITECTURE' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$ARCHITECTURE</envar></link>">
 <!ENTITY cv-link-ARCOM "<link linkend='cv-ARCOM' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$ARCOM</envar></link>">
@@ -854,6 +872,10 @@ THIS IS AN AUTOMATICALLY-GENERATED FILE.  DO NOT EDIT.
 <!ENTITY cv-link-HOST_ARCH "<link linkend='cv-HOST_ARCH' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$HOST_ARCH</envar></link>">
 <!ENTITY cv-link-HOST_OS "<link linkend='cv-HOST_OS' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$HOST_OS</envar></link>">
 <!ENTITY cv-link-IDLSUFFIXES "<link linkend='cv-IDLSUFFIXES' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$IDLSUFFIXES</envar></link>">
+<!ENTITY cv-link-IMPLIBNOVERSIONSYMLINKS "<link linkend='cv-IMPLIBNOVERSIONSYMLINKS' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$IMPLIBNOVERSIONSYMLINKS</envar></link>">
+<!ENTITY cv-link-IMPLIBPREFIX "<link linkend='cv-IMPLIBPREFIX' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$IMPLIBPREFIX</envar></link>">
+<!ENTITY cv-link-IMPLIBSUFFIX "<link linkend='cv-IMPLIBSUFFIX' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$IMPLIBSUFFIX</envar></link>">
+<!ENTITY cv-link-IMPLIBVERSION "<link linkend='cv-IMPLIBVERSION' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$IMPLIBVERSION</envar></link>">
 <!ENTITY cv-link-IMPLICIT_COMMAND_DEPENDENCIES "<link linkend='cv-IMPLICIT_COMMAND_DEPENDENCIES' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$IMPLICIT_COMMAND_DEPENDENCIES</envar></link>">
 <!ENTITY cv-link-INCPREFIX "<link linkend='cv-INCPREFIX' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$INCPREFIX</envar></link>">
 <!ENTITY cv-link-INCSUFFIX "<link linkend='cv-INCSUFFIX' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$INCSUFFIX</envar></link>">
@@ -891,8 +913,13 @@ THIS IS AN AUTOMATICALLY-GENERATED FILE.  DO NOT EDIT.
 <!ENTITY cv-link-LDMODULECOM "<link linkend='cv-LDMODULECOM' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$LDMODULECOM</envar></link>">
 <!ENTITY cv-link-LDMODULECOMSTR "<link linkend='cv-LDMODULECOMSTR' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$LDMODULECOMSTR</envar></link>">
 <!ENTITY cv-link-LDMODULEFLAGS "<link linkend='cv-LDMODULEFLAGS' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$LDMODULEFLAGS</envar></link>">
+<!ENTITY cv-link-LDMODULENOVERSIONSYMLINKS "<link linkend='cv-LDMODULENOVERSIONSYMLINKS' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$LDMODULENOVERSIONSYMLINKS</envar></link>">
 <!ENTITY cv-link-LDMODULEPREFIX "<link linkend='cv-LDMODULEPREFIX' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$LDMODULEPREFIX</envar></link>">
+<!ENTITY cv-link-_LDMODULESONAME "<link linkend='cv-_LDMODULESONAME' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$_LDMODULESONAME</envar></link>">
 <!ENTITY cv-link-LDMODULESUFFIX "<link linkend='cv-LDMODULESUFFIX' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$LDMODULESUFFIX</envar></link>">
+<!ENTITY cv-link-LDMODULEVERSION "<link linkend='cv-LDMODULEVERSION' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$LDMODULEVERSION</envar></link>">
+<!ENTITY cv-link-LDMODULEVERSIONFLAGS "<link linkend='cv-LDMODULEVERSIONFLAGS' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$LDMODULEVERSIONFLAGS</envar></link>">
+<!ENTITY cv-link-_LDMODULEVERSIONFLAGS "<link linkend='cv-_LDMODULEVERSIONFLAGS' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$_LDMODULEVERSIONFLAGS</envar></link>">
 <!ENTITY cv-link-LEX "<link linkend='cv-LEX' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$LEX</envar></link>">
 <!ENTITY cv-link-LEXCOM "<link linkend='cv-LEXCOM' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$LEXCOM</envar></link>">
 <!ENTITY cv-link-LEXCOMSTR "<link linkend='cv-LEXCOMSTR' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$LEXCOMSTR</envar></link>">
@@ -1143,15 +1170,20 @@ THIS IS AN AUTOMATICALLY-GENERATED FILE.  DO NOT EDIT.
 <!ENTITY cv-link-SHFORTRANPPCOM "<link linkend='cv-SHFORTRANPPCOM' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SHFORTRANPPCOM</envar></link>">
 <!ENTITY cv-link-SHFORTRANPPCOMSTR "<link linkend='cv-SHFORTRANPPCOMSTR' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SHFORTRANPPCOMSTR</envar></link>">
 <!ENTITY cv-link-SHLIBEMITTER "<link linkend='cv-SHLIBEMITTER' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SHLIBEMITTER</envar></link>">
+<!ENTITY cv-link-SHLIBNOVERSIONSYMLINKS "<link linkend='cv-SHLIBNOVERSIONSYMLINKS' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SHLIBNOVERSIONSYMLINKS</envar></link>">
 <!ENTITY cv-link-SHLIBPREFIX "<link linkend='cv-SHLIBPREFIX' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SHLIBPREFIX</envar></link>">
+<!ENTITY cv-link-_SHLIBSONAME "<link linkend='cv-_SHLIBSONAME' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$_SHLIBSONAME</envar></link>">
 <!ENTITY cv-link-SHLIBSUFFIX "<link linkend='cv-SHLIBSUFFIX' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SHLIBSUFFIX</envar></link>">
 <!ENTITY cv-link-SHLIBVERSION "<link linkend='cv-SHLIBVERSION' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SHLIBVERSION</envar></link>">
+<!ENTITY cv-link-_SHLIBVERSIONFLAGS "<link linkend='cv-_SHLIBVERSIONFLAGS' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$_SHLIBVERSIONFLAGS</envar></link>">
+<!ENTITY cv-link-SHLIBVERSIONFLAGS "<link linkend='cv-SHLIBVERSIONFLAGS' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SHLIBVERSIONFLAGS</envar></link>">
 <!ENTITY cv-link-SHLINK "<link linkend='cv-SHLINK' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SHLINK</envar></link>">
 <!ENTITY cv-link-SHLINKCOM "<link linkend='cv-SHLINKCOM' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SHLINKCOM</envar></link>">
 <!ENTITY cv-link-SHLINKCOMSTR "<link linkend='cv-SHLINKCOMSTR' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SHLINKCOMSTR</envar></link>">
 <!ENTITY cv-link-SHLINKFLAGS "<link linkend='cv-SHLINKFLAGS' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SHLINKFLAGS</envar></link>">
 <!ENTITY cv-link-SHOBJPREFIX "<link linkend='cv-SHOBJPREFIX' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SHOBJPREFIX</envar></link>">
 <!ENTITY cv-link-SHOBJSUFFIX "<link linkend='cv-SHOBJSUFFIX' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SHOBJSUFFIX</envar></link>">
+<!ENTITY cv-link-SONAME "<link linkend='cv-SONAME' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SONAME</envar></link>">
 <!ENTITY cv-link-SOURCE "<link linkend='cv-SOURCE' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SOURCE</envar></link>">
 <!ENTITY cv-link-SOURCE_URL "<link linkend='cv-SOURCE_URL' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SOURCE_URL</envar></link>">
 <!ENTITY cv-link-SOURCES "<link linkend='cv-SOURCES' xmlns='http://www.scons.org/dbxsd/v1.0'><envar>$SOURCES</envar></link>">
diff --git a/doc/man/scons-time.xml b/doc/man/scons-time.xml
index 0601823..37a3655 100644
--- a/doc/man/scons-time.xml
+++ b/doc/man/scons-time.xml
@@ -32,8 +32,8 @@
 <refmeta>
 <refentrytitle>SCONS-TIME</refentrytitle>
 <manvolnum>1</manvolnum>
-<refmiscinfo class='source'>SCons 2.4.0</refmiscinfo>
-<refmiscinfo class='manual'>SCons 2.4.0</refmiscinfo>
+<refmiscinfo class='source'>SCons 2.4.1</refmiscinfo>
+<refmiscinfo class='manual'>SCons 2.4.1</refmiscinfo>
 </refmeta>
 <refnamediv id='name'>
 <refname>scons-time</refname>
diff --git a/doc/man/scons.xml b/doc/man/scons.xml
index 460e993..8eb56a9 100644
--- a/doc/man/scons.xml
+++ b/doc/man/scons.xml
@@ -75,8 +75,8 @@
 <refmeta>
 <refentrytitle>SCONS</refentrytitle>
 <manvolnum>1</manvolnum>
-<refmiscinfo class='source'>SCons 2.4.0</refmiscinfo>
-<refmiscinfo class='manual'>SCons 2.4.0</refmiscinfo>
+<refmiscinfo class='source'>SCons 2.4.1</refmiscinfo>
+<refmiscinfo class='manual'>SCons 2.4.1</refmiscinfo>
 </refmeta>
 <refnamediv id='name'>
 <refname>scons</refname>
@@ -7040,7 +7040,7 @@ env.Program('MyApp', ['Foo.cpp', 'Bar.cpp'])
 
 <para>For more information see the document for the PCH builder, and the PCH and
 PCHSTOP construction variables. To learn about the details of precompiled
-headers consult the MSDN documention for /Yc, /Yu, and /Yp.</para>
+headers consult the MSDN documentation for /Yc, /Yu, and /Yp.</para>
 
 </refsect2>
 
diff --git a/doc/man/sconsign.xml b/doc/man/sconsign.xml
index 8cba837..0a96069 100644
--- a/doc/man/sconsign.xml
+++ b/doc/man/sconsign.xml
@@ -32,8 +32,8 @@
 <refmeta>
 <refentrytitle>SCONSIGN</refentrytitle>
 <manvolnum>1</manvolnum>
-<refmiscinfo class='source'>SCons 2.4.0</refmiscinfo>
-<refmiscinfo class='manual'>SCons 2.4.0</refmiscinfo>
+<refmiscinfo class='source'>SCons 2.4.1</refmiscinfo>
+<refmiscinfo class='manual'>SCons 2.4.1</refmiscinfo>
 </refmeta>
 <refnamediv id='name'>
 <refname>sconsign</refname>
diff --git a/doc/man/titlepage/SConsBuildBricks_path.svg b/doc/man/titlepage/SConsBuildBricks_path.svg
index ed0c60d..0d7f63e 100644
--- a/doc/man/titlepage/SConsBuildBricks_path.svg
+++ b/doc/man/titlepage/SConsBuildBricks_path.svg
@@ -14,9 +14,9 @@
    height="80.330002"
    id="svg2"
    sodipodi:version="0.32"
-   inkscape:version="0.48.1 r9760"
+   inkscape:version="0.48.4 r9939"
    version="1.0"
-   sodipodi:docname="SConsBuildBricks.svg"
+   sodipodi:docname="SConsBuildBricks_path.svg"
    inkscape:export-filename="Constructs-using-SCons.png"
    inkscape:export-xdpi="100"
    inkscape:export-ydpi="100">
@@ -77,24 +77,22 @@
           </cc:Agent>
         </dc:contributor>
         <cc:license
-           rdf:resource="http://creativecommons.org/licenses/by-nc-sa/2.0/" />
+           rdf:resource="http://creativecommons.org/licenses/by-sa/3.0/" />
       </cc:Work>
       <cc:License
-         rdf:about="http://creativecommons.org/licenses/by-nc-sa/2.5/">
+         rdf:about="http://creativecommons.org/licenses/by-sa/3.0/">
         <cc:permits
-           rdf:resource="http://web.resource.org/cc/Reproduction" />
+           rdf:resource="http://creativecommons.org/ns#Reproduction" />
         <cc:permits
-           rdf:resource="http://web.resource.org/cc/Distribution" />
+           rdf:resource="http://creativecommons.org/ns#Distribution" />
         <cc:requires
-           rdf:resource="http://web.resource.org/cc/Notice" />
+           rdf:resource="http://creativecommons.org/ns#Notice" />
         <cc:requires
-           rdf:resource="http://web.resource.org/cc/Attribution" />
-        <cc:prohibits
-           rdf:resource="http://web.resource.org/cc/CommercialUse" />
+           rdf:resource="http://creativecommons.org/ns#Attribution" />
         <cc:permits
-           rdf:resource="http://web.resource.org/cc/DerivativeWorks" />
+           rdf:resource="http://creativecommons.org/ns#DerivativeWorks" />
         <cc:requires
-           rdf:resource="http://web.resource.org/cc/ShareAlike" />
+           rdf:resource="http://creativecommons.org/ns#ShareAlike" />
       </cc:License>
     </rdf:RDF>
   </metadata>
diff --git a/doc/reference/titlepage/SConsBuildBricks_path.svg b/doc/reference/titlepage/SConsBuildBricks_path.svg
index ed0c60d..0d7f63e 100644
--- a/doc/reference/titlepage/SConsBuildBricks_path.svg
+++ b/doc/reference/titlepage/SConsBuildBricks_path.svg
@@ -14,9 +14,9 @@
    height="80.330002"
    id="svg2"
    sodipodi:version="0.32"
-   inkscape:version="0.48.1 r9760"
+   inkscape:version="0.48.4 r9939"
    version="1.0"
-   sodipodi:docname="SConsBuildBricks.svg"
+   sodipodi:docname="SConsBuildBricks_path.svg"
    inkscape:export-filename="Constructs-using-SCons.png"
    inkscape:export-xdpi="100"
    inkscape:export-ydpi="100">
@@ -77,24 +77,22 @@
           </cc:Agent>
         </dc:contributor>
         <cc:license
-           rdf:resource="http://creativecommons.org/licenses/by-nc-sa/2.0/" />
+           rdf:resource="http://creativecommons.org/licenses/by-sa/3.0/" />
       </cc:Work>
       <cc:License
-         rdf:about="http://creativecommons.org/licenses/by-nc-sa/2.5/">
+         rdf:about="http://creativecommons.org/licenses/by-sa/3.0/">
         <cc:permits
-           rdf:resource="http://web.resource.org/cc/Reproduction" />
+           rdf:resource="http://creativecommons.org/ns#Reproduction" />
         <cc:permits
-           rdf:resource="http://web.resource.org/cc/Distribution" />
+           rdf:resource="http://creativecommons.org/ns#Distribution" />
         <cc:requires
-           rdf:resource="http://web.resource.org/cc/Notice" />
+           rdf:resource="http://creativecommons.org/ns#Notice" />
         <cc:requires
-           rdf:resource="http://web.resource.org/cc/Attribution" />
-        <cc:prohibits
-           rdf:resource="http://web.resource.org/cc/CommercialUse" />
+           rdf:resource="http://creativecommons.org/ns#Attribution" />
         <cc:permits
-           rdf:resource="http://web.resource.org/cc/DerivativeWorks" />
+           rdf:resource="http://creativecommons.org/ns#DerivativeWorks" />
         <cc:requires
-           rdf:resource="http://web.resource.org/cc/ShareAlike" />
+           rdf:resource="http://creativecommons.org/ns#ShareAlike" />
       </cc:License>
     </rdf:RDF>
   </metadata>
diff --git a/doc/scons.mod b/doc/scons.mod
index 337457c..2cc3a46 100644
--- a/doc/scons.mod
+++ b/doc/scons.mod
@@ -276,6 +276,7 @@
 <!ENTITY CheckHeader "<function xmlns='http://www.scons.org/dbxsd/v1.0'>CheckHeader</function>">
 <!ENTITY CheckLib "<function xmlns='http://www.scons.org/dbxsd/v1.0'>CheckLib</function>">
 <!ENTITY CheckLibWithHeader "<function xmlns='http://www.scons.org/dbxsd/v1.0'>CheckLibWithHeader</function>">
+<!ENTITY CheckProg "<function xmlns='http://www.scons.org/dbxsd/v1.0'>CheckProg</function>">
 <!ENTITY CheckType "<function xmlns='http://www.scons.org/dbxsd/v1.0'>CheckType</function>">
 <!ENTITY CheckTypeSize "<function xmlns='http://www.scons.org/dbxsd/v1.0'>CheckTypeSize</function>">
 <!ENTITY TryAction "<function xmlns='http://www.scons.org/dbxsd/v1.0'>TryAction</function>">
diff --git a/doc/user/build-install.xml b/doc/user/build-install.xml
index 553be4b..15c0a84 100644
--- a/doc/user/build-install.xml
+++ b/doc/user/build-install.xml
@@ -231,7 +231,7 @@ Python 2.5.1
       <para>
 
       Or, you can use a graphical RPM package manager.
-      See your package manager application's documention
+      See your package manager application's documentation
       for specific instructions about
       how to use it to install a downloaded RPM.
 
diff --git a/doc/user/output.xml b/doc/user/output.xml
index 3af96b4..5230e5c 100644
--- a/doc/user/output.xml
+++ b/doc/user/output.xml
@@ -83,6 +83,21 @@ Type: 'scons program' to build the production program,
 
     <para>
 
+    Optionally, one can specify the append flag:
+
+    </para>
+
+    <scons_example name="output_ex1_a">
+       <file name="SConstruct" printme="1">
+Help("""
+Type: 'scons program' to build the production program,
+      'scons debug' to build the debug version.
+""", append=True)
+       </file>
+    </scons_example>
+
+    <para>
+
     (Note the above use of the Python triple-quote syntax,
     which comes in very handy for
     specifying multi-line strings like help text.)
@@ -120,6 +135,13 @@ Type: 'scons program' to build the production program,
 
     <para>
 
+    When used with &AddOption; Help("text", append=False) will clobber any help output associated with AddOption().
+    To preserve the help output from AddOption(), set append=True.
+
+    </para>
+
+    <para>
+
     Another use would be to make the help text conditional
     on some variable.
     For example, suppose you only want to display
diff --git a/doc/user/sconf.xml b/doc/user/sconf.xml
index 9096aad..621405e 100644
--- a/doc/user/sconf.xml
+++ b/doc/user/sconf.xml
@@ -304,6 +304,26 @@ scons: `.' is up to date.
   </section>
 
   <section>
+  <title>Checking for the Presence of a program</title>
+
+    <para>
+
+    Check for the presence of a program
+    by using the &CheckProg; method:
+
+    </para>
+
+    <sconstruct>
+env = Environment()
+conf = Configure(env)
+if not conf.CheckProg('foobar'):
+  print 'Unable to find the program foobar on the system'
+  Exit(1)
+env = conf.Finish()
+    </sconstruct>
+
+  </section>
+  <section>
   <title>Adding Your Own Custom Checks</title>
 
     <para>
diff --git a/doc/user/tasks.xml b/doc/user/tasks.xml
index e5ab216..e06c64a 100644
--- a/doc/user/tasks.xml
+++ b/doc/user/tasks.xml
@@ -96,8 +96,8 @@ filenames = [x for x in filenames if os.path.splitext(x)[1] in extensions]
 <example>
 <title>The "backtick function": run a shell command and capture the
 output</title>
-<programlisting>import os
-output = os.popen(command).read()
+<programlisting>import subprocess
+output = subprocess.check_output(command)
 </programlisting>
 </example>
 
diff --git a/doc/user/titlepage/SConsBuildBricks_path.svg b/doc/user/titlepage/SConsBuildBricks_path.svg
index ed0c60d..0d7f63e 100644
--- a/doc/user/titlepage/SConsBuildBricks_path.svg
+++ b/doc/user/titlepage/SConsBuildBricks_path.svg
@@ -14,9 +14,9 @@
    height="80.330002"
    id="svg2"
    sodipodi:version="0.32"
-   inkscape:version="0.48.1 r9760"
+   inkscape:version="0.48.4 r9939"
    version="1.0"
-   sodipodi:docname="SConsBuildBricks.svg"
+   sodipodi:docname="SConsBuildBricks_path.svg"
    inkscape:export-filename="Constructs-using-SCons.png"
    inkscape:export-xdpi="100"
    inkscape:export-ydpi="100">
@@ -77,24 +77,22 @@
           </cc:Agent>
         </dc:contributor>
         <cc:license
-           rdf:resource="http://creativecommons.org/licenses/by-nc-sa/2.0/" />
+           rdf:resource="http://creativecommons.org/licenses/by-sa/3.0/" />
       </cc:Work>
       <cc:License
-         rdf:about="http://creativecommons.org/licenses/by-nc-sa/2.5/">
+         rdf:about="http://creativecommons.org/licenses/by-sa/3.0/">
         <cc:permits
-           rdf:resource="http://web.resource.org/cc/Reproduction" />
+           rdf:resource="http://creativecommons.org/ns#Reproduction" />
         <cc:permits
-           rdf:resource="http://web.resource.org/cc/Distribution" />
+           rdf:resource="http://creativecommons.org/ns#Distribution" />
         <cc:requires
-           rdf:resource="http://web.resource.org/cc/Notice" />
+           rdf:resource="http://creativecommons.org/ns#Notice" />
         <cc:requires
-           rdf:resource="http://web.resource.org/cc/Attribution" />
-        <cc:prohibits
-           rdf:resource="http://web.resource.org/cc/CommercialUse" />
+           rdf:resource="http://creativecommons.org/ns#Attribution" />
         <cc:permits
-           rdf:resource="http://web.resource.org/cc/DerivativeWorks" />
+           rdf:resource="http://creativecommons.org/ns#DerivativeWorks" />
         <cc:requires
-           rdf:resource="http://web.resource.org/cc/ShareAlike" />
+           rdf:resource="http://creativecommons.org/ns#ShareAlike" />
       </cc:License>
     </rdf:RDF>
   </metadata>
diff --git a/src/Announce.txt b/src/Announce.txt
index 512e0c7..958c3e7 100644
--- a/src/Announce.txt
+++ b/src/Announce.txt
@@ -18,31 +18,86 @@ So that everyone using SCons can help each other learn how to use it more
 effectively, please go to http://scons.org/lists.php#users to sign up for
 the scons-users mailing list.
 
-==============IMPORTANT NOTICE===========
+==============IMPORTANT NOTICE FOR NEXT VERSION V2.5.0==========
+PLEASE READ. CHANGES COMING IN NEXT MAJOR RELEASE V2.5.0
 
-As has been pre-announced in SCons's mailing lists:
+We're enhancing implicit language scanning functionality to improve
+correctness.  SCons now honors scanner keys for implicit dependencies
+and correctly changes scanner type (if necessary) when traversing 
+implicit dependency trees.  
 
-* https://pairlist4.pair.net/pipermail/scons-users/2014-July/002734.html ,
-* https://pairlist2.pair.net/pipermail/scons-dev/2014-December/002107.html
-* https://pairlist4.pair.net/pipermail/scons-users/2015-February/003454.html
+This enhancement resolves missing dependencies
+with built-in scanners including SWIG (#2264) and QT:
+* http://scons.tigris.org/issues/show_bug.cgi?id=2264
 
-We're planning to switch the Node class to using "slots" in the core sources,
-mainly to reduce memory consumption by up to 35% in large build projects.
+This enhancement broadens the horizon for handling heterogeneous
+data flow environments (E.G. software builds):
+* http://article.gmane.org/gmane.comp.programming.tools.scons.user/26596
+Notes:
 
-This feature has been tested extensively and we don't expect any problems for you.
-However as with all major changes it would be wise to test V2.4.0 when it is
-released. Especially if you are directly using the Node class.
+* SCons may find new (and correct) dependencies in cross-langauge contexts.
+** Update may cause rebuilds, especially in heterogeneous data environments.
+** Update may find previously missed dependencies errors (E.G. cycles).
+*** Discovered in some QT test cases.
+* SCons handles the SCANNERS variable differently.
+** Previously, the Install builder would scan implicit dependencies for
+   a scanner found in SCANNERS (but not for built-in scanners), but now
+   the Install builder will not scan recursively regardless in order
+   to optimize Install behaviour and bring orthogonality to previous behaviour.
 
-=================================================================
++=================================================================
 
 
-RELEASE 2.4.0 - Mon, 21 Sep 2015 09:07:51 -0700
+RELEASE 2.4.1 - Mon, 07 Nov 2015 10:37:21 -0700
 
   Please consult the RELEASE.txt file for a summary of changes since the last
   release and consult the CHANGES.txt file for complete a list of changes
   since last release.  This announcement highlights only the important
   changes.
 
+  Please note the following important changes since release 2.4.0:
+    - Fix to swig tool - pick-up 'swig', 'swig3.0' and 'swig2.0' (in order).
+    - Fix to swig tool - respect env['SWIG'] provided by user.
+    - Fix for Bug # 2791 - Setup.py fails unnecessarily under Jython.
+    - Fixed license of SVG titlepage files in the context of Debian
+      packaging, such that they allow for commercial use too (#2985).
+    - InstallVersionedLib now available in the DefaultEnvironment context.
+    - Improves orthogonality of use cases between different Install functions.
+    - Added new configure check, CheckProg, to check for
+      existence of a program.
+    - Fix for issue #2840 - Fix for two environments specifying same target with different
+      actions not throwing hard error. Instead SCons was incorrectly issuing a warning
+      and continuing.
+    - Add support `Microsoft Visual C++ Compiler for Python 2.7' 
+      Compiler can be obtained at: https://www.microsoft.com/en-us/download/details.aspx?id=44266
+    - Fixed tigris issue #3011: Glob() excludes didn't work when used with VariantDir(duplicate=0)
+    - Fix bug 2831 and allow Help() text to be appended to AddOption() help.
+    - Reimplemented versioning for shared libraries, with the following effects
+    - Fixed tigris issues #3001, #3006.
+    - Fixed several other issues not reported to tigris, including:
+      issues with versioned libraries in subdirectories with tricky names,
+      issues with versioned libraries and variant directories,
+      issue with soname not being injected to library when using D linkers,
+    - Switched to direct symlinks instead of daisy-chained ones -- soname and
+      development symlinks point directly to the versioned shared library now),
+      for rationale see:
+      https://www.debian.org/doc/debian-policy/ch-sharedlibs.html
+      https://fedoraproject.org/wiki/Packaging:Guidelines#Devel_Packages
+      https://bitbucket.org/scons/scons/pull-requests/247/new-versioned-libraries-gnulink-cyglink/diff#comment-10063929
+    - New construction variables to allow override default behavior: SONAME,
+      SHLIBVERSIONFLAGS, _SHLIBVERSIONFLAGS, SHLIBNOVERSIONSYMLINKS,
+      LDMODULEVERSION, LDMODULEVERSIONFLAGS, _LDMODULEVERSIONFLAGS,
+      LDMODULENOVERSIONSYMLINKS.
+    - Changed logic used to configure the versioning machinery from
+      platform-centric to linker-oriented.
+    - The SHLIBVERSION/LDMODULEVERSION variables are no longer validated by
+      SCons (more freedom to users).
+    - InstallVersionedLib() doesn't use SHLIBVERSION anymore.
+    - Enchanced docs for the library versioning stuff.
+    - New tests for versioned libraries.
+    - Library versioning is currently implemented for the following linker
+      tools: 'cyglink', 'gnulink', 'sunlink'.
+
   Please note the following important changes since release 2.3.6:
     - Switch several core classes to use "slots" to reduce memory
       usage. (PR #2180, #2178, #2198)
@@ -1179,4 +1234,4 @@ improve SCons for your needs.
    Thanks to all the contributors for all your help!
 
 Copyright (c) 2001 - 2015 The SCons Foundation
-src/Announce.txt rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog
+src/Announce.txt rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog
diff --git a/src/CHANGES.txt b/src/CHANGES.txt
index 5f96a23..67912f7 100644
--- a/src/CHANGES.txt
+++ b/src/CHANGES.txt
@@ -4,7 +4,70 @@
 
                             Change Log
 
-RELEASE 2.4.0 - Mon, 21 Sep 2015 09:07:51 -0700
+RELEASE 2.4.1 - Mon, 07 Nov 2015 10:37:21 -0700
+
+  From Arfrever Frehtes Taifersar Arahesis:
+    - Fix for Bug # 2791 - Setup.py fails unnecessarily under Jython.
+
+  From Dirk Baechle:
+    - Fixed license of SVG titlepage files in the context of Debian
+      packaging, such that they allow for commercial use too (#2985).
+
+  From William Blevins:
+    - InstallVersionedLib now available in the DefaultEnvironment context.
+    - Improves orthogonality of use cases between different Install functions.
+
+  From Carnë Draug:
+    - Added new configure check, CheckProg, to check for
+      existence of a program.
+
+  From Andrew Featherstone:
+    - Fix for issue #2840 - Fix for two environments specifying same target with different
+      actions not throwing hard error. Instead SCons was incorrectly issuing a warning
+      and continuing.
+
+  From Hiroaki Itoh :
+    - Add support `Microsoft Visual C++ Compiler for Python 2.7' 
+      Compiler can be obtained at: https://www.microsoft.com/en-us/download/details.aspx?id=44266
+
+  From Florian Miedniak:
+    - Fixed tigris issue #3011: Glob() excludes didn't work when used with VariantDir(duplicate=0)
+
+  From William Roberts:
+    - Fix bug 2831 and allow Help() text to be appended to AddOption() help.
+
+  From Paweł Tomulik:
+    - Reimplemented versioning for shared libraries, with the following effects
+    - Fixed tigris issues #3001, #3006.
+    - Fixed several other issues not reported to tigris, including:
+      issues with versioned libraries in subdirectories with tricky names,
+      issues with versioned libraries and variant directories,
+      issue with soname not being injected to library when using D linkers,
+    - Switched to direct symlinks instead of daisy-chained ones -- soname and
+      development symlinks point directly to the versioned shared library now),
+      for rationale see:
+      https://www.debian.org/doc/debian-policy/ch-sharedlibs.html
+      https://fedoraproject.org/wiki/Packaging:Guidelines#Devel_Packages
+      https://bitbucket.org/scons/scons/pull-requests/247/new-versioned-libraries-gnulink-cyglink/diff#comment-10063929
+    - New construction variables to allow override default behavior: SONAME,
+      SHLIBVERSIONFLAGS, _SHLIBVERSIONFLAGS, SHLIBNOVERSIONSYMLINKS,
+      LDMODULEVERSION, LDMODULEVERSIONFLAGS, _LDMODULEVERSIONFLAGS,
+      LDMODULENOVERSIONSYMLINKS.
+    - Changed logic used to configure the versioning machinery from
+      platform-centric to linker-oriented.
+    - The SHLIBVERSION/LDMODULEVERSION variables are no longer validated by
+      SCons (more freedom to users).
+    - InstallVersionedLib() doesn't use SHLIBVERSION anymore.
+    - Enchanced docs for the library versioning stuff.
+    - New tests for versioned libraries.
+    - Library versioning is currently implemented for the following linker
+      tools: 'cyglink', 'gnulink', 'sunlink'.
+    - Fix to swig tool - pick-up 'swig', 'swig3.0' and 'swig2.0' (in order).
+    - Fix to swig tool - respect env['SWIG'] provided by user.
+
+
+
+RELEASE 2.4.0 - Mon, 21 Sep 2015 08:56:00 -0700
 
   From Dirk Baechle:
     - Switched several core classes to use "slots", to
@@ -5896,4 +5959,4 @@ A brief overview of important functionality available in release 0.01:
 
 
 Copyright (c) 2001 - 2015 The SCons Foundation
-src/CHANGES.txt rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog
+src/CHANGES.txt rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog
diff --git a/src/README.txt b/src/README.txt
index 7f4db66..6da073e 100644
--- a/src/README.txt
+++ b/src/README.txt
@@ -2,7 +2,7 @@
 
                  SCons - a software construction tool
 
-                         Version 2.4.0
+                         Version 2.4.1
 
 
 This is SCons, a tool for building software (and other files).  SCons is
@@ -57,7 +57,7 @@ provided Python-standard setup script as follows:
 
 By default, the above command will do the following:
 
-    --  Install the version-numbered "scons-2.4.0" and "sconsign-2.4.0"
+    --  Install the version-numbered "scons-2.4.1" and "sconsign-2.4.1"
         scripts in the default system script directory (/usr/bin or
         C:\Python*\Scripts, for example).  This can be disabled by
         specifying the "--no-version-script" option on the command
@@ -71,17 +71,17 @@ By default, the above command will do the following:
         making it the default on your system.
 
         On UNIX or Linux systems, you can have the "scons" and "sconsign"
-        scripts be hard links or symbolic links to the "scons-2.4.0" and
-        "sconsign-2.4.0" scripts by specifying the "--hardlink-scons"
+        scripts be hard links or symbolic links to the "scons-2.4.1" and
+        "sconsign-2.4.1" scripts by specifying the "--hardlink-scons"
         or "--symlink-scons" options on the command line.
 
-    --  Install "scons-2.4.0.bat" and "scons.bat" wrapper scripts in the
+    --  Install "scons-2.4.1.bat" and "scons.bat" wrapper scripts in the
         Python prefix directory on Windows (C:\Python*, for example).
         This can be disabled by specifying the "--no-install-bat" option
         on the command line.
 
         On UNIX or Linux systems, the "--install-bat" option may be
-        specified to have "scons-2.4.0.bat" and "scons.bat" files
+        specified to have "scons-2.4.1.bat" and "scons.bat" files
         installed in the default system script directory, which is useful
         if you want to install SCons in a shared file system directory
         that can be used to execute SCons from both UNIX/Linux and
@@ -89,7 +89,7 @@ By default, the above command will do the following:
 
     --  Install the SCons build engine (a Python module) in an
         appropriate version-numbered SCons library directory
-        (/usr/lib/scons-2.4.0 or C:\Python*\scons-2.4.0, for example).
+        (/usr/lib/scons-2.4.1 or C:\Python*\scons-2.4.1, for example).
         See below for more options related to installing the build
         engine library.
 
diff --git a/src/RELEASE.txt b/src/RELEASE.txt
index 88d176e..71e6b9b 100644
--- a/src/RELEASE.txt
+++ b/src/RELEASE.txt
@@ -1,48 +1,69 @@
-  A new SCons release, 2.4.0, is now available
+  A new SCons release, 2.4.1, is now available
   on the SCons download page:
 
           http://www.scons.org/download.php
 
-  Here is a summary of the changes since 2.3.6:
+    Here is a summary of the changes since 2.4.0:
 
   NEW FUNCTIONALITY
-
-    - None
+    - InstallVersionedLib now available in the DefaultEnvironment context.
+    - Added new configure check, CheckProg, to check for existence of a program.
+    - Add support `Microsoft Visual C++ Compiler for Python 2.7' 
+      Compiler can be obtained at: https://www.microsoft.com/en-us/download/details.aspx?id=44266
 
   DEPRECATED FUNCTIONALITY
 
-    - None
-
   CHANGED/ENHANCED EXISTING FUNCTIONALITY
 
-    - None
+    - Reimplemented versioning for shared libraries, with the following effects
+    - Fixed tigris issues #3001, #3006.
+    - Fixed several other issues not reported to tigris, including:
+      issues with versioned libraries in subdirectories with tricky names,
+      issues with versioned libraries and variant directories,
+      issue with soname not being injected to library when using D linkers,
+    - Switched to direct symlinks instead of daisy-chained ones -- soname and
+      development symlinks point directly to the versioned shared library now),
+      for rationale see:
+      https://www.debian.org/doc/debian-policy/ch-sharedlibs.html
+      https://fedoraproject.org/wiki/Packaging:Guidelines#Devel_Packages
+      https://bitbucket.org/scons/scons/pull-requests/247/new-versioned-libraries-gnulink-cyglink/diff#comment-10063929
+    - New construction variables to allow override default behavior: SONAME,
+      SHLIBVERSIONFLAGS, _SHLIBVERSIONFLAGS, SHLIBNOVERSIONSYMLINKS,
+      LDMODULEVERSION, LDMODULEVERSIONFLAGS, _LDMODULEVERSIONFLAGS,
+      LDMODULENOVERSIONSYMLINKS.
+    - Changed logic used to configure the versioning machinery from
+      platform-centric to linker-oriented.
+    - The SHLIBVERSION/LDMODULEVERSION variables are no longer validated by
+      SCons (more freedom to users).
+    - InstallVersionedLib() doesn't use SHLIBVERSION anymore.
+    - Enchanced docs for the library versioning stuff.
+    - New tests for versioned libraries.
+    - Library versioning is currently implemented for the following linker
+      tools: 'cyglink', 'gnulink', 'sunlink'.
 
   FIXES
 
-    - None
+    - Fix for issue #2840 - Fix for two environments specifying same target with different
+      actions not throwing hard error. Instead SCons was incorrectly issuing a warning
+      and continuing.
+    - Fix to swig tool - pick-up 'swig', 'swig3.0' and 'swig2.0' (in order).
+    - Fix to swig tool - respect env['SWIG'] provided by user.
+    - Fix for Bug # 2791 - Setup.py fails unnecessarily under Jython.
+    - Fixed license of SVG titlepage files in the context of Debian
+      packaging, such that they allow for commercial use too (#2985).
+    - Fixed tigris issue #3011: Glob() excludes didn't work when used with VariantDir(duplicate=0)
+    - Fix bug 2831 and allow Help() text to be appended to AddOption() help.
 
   IMPROVEMENTS
 
-    - Switched several core classes to use "slots", to
-      reduce the overall memory consumption in large
-      projects (fixes #2180, #2178, #2198)
-    - Memoizer counting uses decorators now, instead of
-      the old metaclasses approach.
-
   PACKAGING
 
-    - Added new amd64 windows 64 bit installer
-
   DOCUMENTATION
 
-    - None
-
   DEVELOPMENT
 
-    - None
-
-  Thanks to Dirk Baechle, Andrew Featherstone for their contributions to this release.
+  Thanks to Arfrever Frehtes Taifersar Arahesis, Dirk Baechle, William Blevins, Carnë Draug, Andrew Featherstone, Hiroaki Itoh, Florian Miedniak, William Roberts, Paweł Tomulik  for their contributions to this release.
   Contributors are listed alphabetically by their last name.
 
 Copyright (c) 2001 - 2015 The SCons Foundation
-src/RELEASE.txt rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog
+src/RELEASE.txt rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog
diff --git a/src/engine/SCons/Action.py b/src/engine/SCons/Action.py
index 7acde46..7a4203c 100644
--- a/src/engine/SCons/Action.py
+++ b/src/engine/SCons/Action.py
@@ -97,7 +97,7 @@ way for wrapping up the functions.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Action.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Action.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import dis
 import os
diff --git a/src/engine/SCons/ActionTests.py b/src/engine/SCons/ActionTests.py
index da07bd2..87e67b3 100644
--- a/src/engine/SCons/ActionTests.py
+++ b/src/engine/SCons/ActionTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/ActionTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/ActionTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 # Define a null function and a null class for use as builder actions.
 # Where these are defined in the file seems to affect their byte-code
diff --git a/src/engine/SCons/Builder.py b/src/engine/SCons/Builder.py
index 4c68d5c..6bdd008 100644
--- a/src/engine/SCons/Builder.py
+++ b/src/engine/SCons/Builder.py
@@ -97,7 +97,7 @@ There are the following methods for internal use within this module:
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Builder.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Builder.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import collections
 
@@ -292,8 +292,8 @@ def _node_errors(builder, env, tlist, slist):
         if t.has_explicit_builder():
             if not t.env is None and not t.env is env:
                 action = t.builder.action
-                t_contents = action.get_contents(tlist, slist, t.env)
-                contents = action.get_contents(tlist, slist, env)
+                t_contents = t.builder.action.get_contents(tlist, slist, t.env)
+                contents = builder.action.get_contents(tlist, slist, env)
 
                 if t_contents == contents:
                     msg = "Two different environments were specified for target %s,\n\tbut they appear to have the same action: %s" % (t, action.genstring(tlist, slist, t.env))
diff --git a/src/engine/SCons/BuilderTests.py b/src/engine/SCons/BuilderTests.py
index 898b78c..0de2d30 100644
--- a/src/engine/SCons/BuilderTests.py
+++ b/src/engine/SCons/BuilderTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/BuilderTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/BuilderTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/CacheDir.py b/src/engine/SCons/CacheDir.py
index 9e3ec6b..086d44d 100644
--- a/src/engine/SCons/CacheDir.py
+++ b/src/engine/SCons/CacheDir.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/CacheDir.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/CacheDir.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """
 CacheDir support
diff --git a/src/engine/SCons/CacheDirTests.py b/src/engine/SCons/CacheDirTests.py
index 4d26f61..9855055 100644
--- a/src/engine/SCons/CacheDirTests.py
+++ b/src/engine/SCons/CacheDirTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/CacheDirTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/CacheDirTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 import shutil
diff --git a/src/engine/SCons/Conftest.py b/src/engine/SCons/Conftest.py
index e9702ff..87a3022 100644
--- a/src/engine/SCons/Conftest.py
+++ b/src/engine/SCons/Conftest.py
@@ -684,6 +684,22 @@ return 0;
 
     return ret
 
+def CheckProg(context, prog_name):
+    """
+    Configure check for a specific program.
+
+    Check whether program prog_name exists in path.  If it is found,
+    returns the path for it, otherwise returns None.
+    """
+    context.Display("Checking whether %s program exists..." % prog_name)
+    path = context.env.WhereIs(prog_name)
+    if path:
+        context.Display(path + "\n")
+    else:
+        context.Display("no\n")
+    return path
+
+
 #
 # END OF PUBLIC FUNCTIONS
 #
diff --git a/src/engine/SCons/Debug.py b/src/engine/SCons/Debug.py
index 0aa077d..22d09ab 100644
--- a/src/engine/SCons/Debug.py
+++ b/src/engine/SCons/Debug.py
@@ -28,7 +28,7 @@ needed by most users.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Debug.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Debug.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import sys
diff --git a/src/engine/SCons/Defaults.py b/src/engine/SCons/Defaults.py
index b4cbb9a..8c86c95 100644
--- a/src/engine/SCons/Defaults.py
+++ b/src/engine/SCons/Defaults.py
@@ -33,7 +33,7 @@ from distutils.msvccompiler.
 #
 from __future__ import division
 
-__revision__ = "src/engine/SCons/Defaults.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Defaults.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 
 import os
@@ -482,6 +482,15 @@ class Variable_Method_Caller(object):
             frame = frame.f_back
         return None
 
+# if env[version_var] id defined, returns env[flags_var], otherwise returns None
+def __libversionflags(env, version_var, flags_var):
+    try:
+        if env[version_var]:
+            return env[flags_var]
+    except KeyError:
+        pass
+    return None
+
 ConstructionEnvironment = {
     'BUILDERS'      : {},
     'SCANNERS'      : [],
@@ -499,6 +508,12 @@ ConstructionEnvironment = {
     '_LIBDIRFLAGS'  : '$( ${_concat(LIBDIRPREFIX, LIBPATH, LIBDIRSUFFIX, __env__, RDirs, TARGET, SOURCE)} $)',
     '_CPPINCFLAGS'  : '$( ${_concat(INCPREFIX, CPPPATH, INCSUFFIX, __env__, RDirs, TARGET, SOURCE)} $)',
     '_CPPDEFFLAGS'  : '${_defines(CPPDEFPREFIX, CPPDEFINES, CPPDEFSUFFIX, __env__)}',
+
+    '__libversionflags'      : __libversionflags,
+    '__SHLIBVERSIONFLAGS'    : '${__libversionflags(__env__,"SHLIBVERSION","_SHLIBVERSIONFLAGS")}',
+    '__LDMODULEVERSIONFLAGS' : '${__libversionflags(__env__,"LDMODULEVERSION","_LDMODULEVERSIONFLAGS")}',
+    '__DSHLIBVERSIONFLAGS'   : '${__libversionflags(__env__,"DSHLIBVERSION","_DSHLIBVERSIONFLAGS")}',
+
     'TEMPFILE'      : NullCmdGenerator,
     'Dir'           : Variable_Method_Caller('TARGET', 'Dir'),
     'Dirs'          : Variable_Method_Caller('TARGET', 'Dirs'),
diff --git a/src/engine/SCons/DefaultsTests.py b/src/engine/SCons/DefaultsTests.py
index 3347818..8980805 100644
--- a/src/engine/SCons/DefaultsTests.py
+++ b/src/engine/SCons/DefaultsTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/DefaultsTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/DefaultsTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/Environment.py b/src/engine/SCons/Environment.py
index 865c821..b779302 100644
--- a/src/engine/SCons/Environment.py
+++ b/src/engine/SCons/Environment.py
@@ -31,7 +31,7 @@ Environment
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Environment.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Environment.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 
 import copy
@@ -612,7 +612,7 @@ class SubstitutionEnvironment(object):
 
     def Override(self, overrides):
         """
-        Produce a modified environment whose variables are overriden by
+        Produce a modified environment whose variables are overridden by
         the overrides dictionaries.  "overrides" is a dictionary that
         will override the variables of this environment.
 
diff --git a/src/engine/SCons/EnvironmentTests.py b/src/engine/SCons/EnvironmentTests.py
index 42fef86..9cc6050 100644
--- a/src/engine/SCons/EnvironmentTests.py
+++ b/src/engine/SCons/EnvironmentTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/EnvironmentTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/EnvironmentTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/Errors.py b/src/engine/SCons/Errors.py
index 998a70d..d19d8e4 100644
--- a/src/engine/SCons/Errors.py
+++ b/src/engine/SCons/Errors.py
@@ -28,7 +28,7 @@ and user errors in SCons.
 
 """
 
-__revision__ = "src/engine/SCons/Errors.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Errors.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Util
 
diff --git a/src/engine/SCons/ErrorsTests.py b/src/engine/SCons/ErrorsTests.py
index 2ebc5d2..d1d70e9 100644
--- a/src/engine/SCons/ErrorsTests.py
+++ b/src/engine/SCons/ErrorsTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/ErrorsTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/ErrorsTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import sys
 import unittest
diff --git a/src/engine/SCons/Executor.py b/src/engine/SCons/Executor.py
index 3211fd1..f7a4ee1 100644
--- a/src/engine/SCons/Executor.py
+++ b/src/engine/SCons/Executor.py
@@ -27,7 +27,7 @@ Nodes.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Executor.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Executor.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import collections
 
diff --git a/src/engine/SCons/ExecutorTests.py b/src/engine/SCons/ExecutorTests.py
index 9fbe560..57fdf2b 100644
--- a/src/engine/SCons/ExecutorTests.py
+++ b/src/engine/SCons/ExecutorTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/ExecutorTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/ExecutorTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import sys
 import unittest
diff --git a/src/engine/SCons/Job.py b/src/engine/SCons/Job.py
index 60aa0ae..08c6c30 100644
--- a/src/engine/SCons/Job.py
+++ b/src/engine/SCons/Job.py
@@ -29,7 +29,7 @@ stop, and wait on jobs.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Job.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Job.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/JobTests.py b/src/engine/SCons/JobTests.py
index cc066d9..1986b72 100644
--- a/src/engine/SCons/JobTests.py
+++ b/src/engine/SCons/JobTests.py
@@ -20,7 +20,7 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/JobTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/JobTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import unittest
 import random
diff --git a/src/engine/SCons/Memoize.py b/src/engine/SCons/Memoize.py
index 77a8e16..8051c6b 100644
--- a/src/engine/SCons/Memoize.py
+++ b/src/engine/SCons/Memoize.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Memoize.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Memoize.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """Memoizer
 
diff --git a/src/engine/SCons/MemoizeTests.py b/src/engine/SCons/MemoizeTests.py
index 778162a..e5f337e 100644
--- a/src/engine/SCons/MemoizeTests.py
+++ b/src/engine/SCons/MemoizeTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/MemoizeTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/MemoizeTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import sys
 import unittest
diff --git a/src/engine/SCons/Node/Alias.py b/src/engine/SCons/Node/Alias.py
index 7e13b00..3b58d4d 100644
--- a/src/engine/SCons/Node/Alias.py
+++ b/src/engine/SCons/Node/Alias.py
@@ -30,7 +30,7 @@ This creates a hash of global Aliases (dummy targets).
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Node/Alias.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Node/Alias.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import collections
 
diff --git a/src/engine/SCons/Node/AliasTests.py b/src/engine/SCons/Node/AliasTests.py
index 0553c6f..f967874 100644
--- a/src/engine/SCons/Node/AliasTests.py
+++ b/src/engine/SCons/Node/AliasTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Node/AliasTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Node/AliasTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import sys
 import unittest
diff --git a/src/engine/SCons/Node/FS.py b/src/engine/SCons/Node/FS.py
index b6a1bb5..bd43676 100644
--- a/src/engine/SCons/Node/FS.py
+++ b/src/engine/SCons/Node/FS.py
@@ -32,7 +32,7 @@ that can be used by scripts or modules looking for the canonical default.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Node/FS.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Node/FS.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import fnmatch
 import os
@@ -2182,7 +2182,12 @@ class Dir(Base):
                     r = [os.path.join(str(dir), x) for x in r]
                 result.extend(r)
         if exclude:
-            result = filter(lambda x: not any(fnmatch.fnmatch(str(x), e) for e in SCons.Util.flatten(exclude)), result)
+            excludes = []
+            excludeList = SCons.Util.flatten(exclude)
+            for x in excludeList:
+                r = self.glob(x, ondisk, source, strings)
+                excludes.extend(r)
+            result = filter(lambda x: not any(fnmatch.fnmatch(str(x), str(e)) for e in SCons.Util.flatten(excludes)), result)
         return sorted(result, key=lambda a: str(a))
 
     def _glob1(self, pattern, ondisk=True, source=False, strings=False):
diff --git a/src/engine/SCons/Node/FSTests.py b/src/engine/SCons/Node/FSTests.py
index 7cda32d..7109fbe 100644
--- a/src/engine/SCons/Node/FSTests.py
+++ b/src/engine/SCons/Node/FSTests.py
@@ -22,7 +22,7 @@
 #
 from __future__ import division
 
-__revision__ = "src/engine/SCons/Node/FSTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Node/FSTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/Node/NodeTests.py b/src/engine/SCons/Node/NodeTests.py
index 3a896ce..7082a74 100644
--- a/src/engine/SCons/Node/NodeTests.py
+++ b/src/engine/SCons/Node/NodeTests.py
@@ -20,7 +20,7 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Node/NodeTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Node/NodeTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/Node/Python.py b/src/engine/SCons/Node/Python.py
index b247ff6..1717528 100644
--- a/src/engine/SCons/Node/Python.py
+++ b/src/engine/SCons/Node/Python.py
@@ -27,7 +27,7 @@ Python nodes.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Node/Python.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Node/Python.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Node
 
diff --git a/src/engine/SCons/Node/PythonTests.py b/src/engine/SCons/Node/PythonTests.py
index 7163b91..f798f0b 100644
--- a/src/engine/SCons/Node/PythonTests.py
+++ b/src/engine/SCons/Node/PythonTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Node/PythonTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Node/PythonTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import sys
 import unittest
diff --git a/src/engine/SCons/Node/__init__.py b/src/engine/SCons/Node/__init__.py
index 79db894..4cd62d5 100644
--- a/src/engine/SCons/Node/__init__.py
+++ b/src/engine/SCons/Node/__init__.py
@@ -41,7 +41,7 @@ be able to depend on any other type of "thing."
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Node/__init__.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Node/__init__.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import collections
 import copy
diff --git a/src/engine/SCons/Options/BoolOption.py b/src/engine/SCons/Options/BoolOption.py
index c8d901f..62aa952 100644
--- a/src/engine/SCons/Options/BoolOption.py
+++ b/src/engine/SCons/Options/BoolOption.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Options/BoolOption.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Options/BoolOption.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """Place-holder for the old SCons.Options module hierarchy
 
diff --git a/src/engine/SCons/Options/EnumOption.py b/src/engine/SCons/Options/EnumOption.py
index 58b99ef..3e689af 100644
--- a/src/engine/SCons/Options/EnumOption.py
+++ b/src/engine/SCons/Options/EnumOption.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Options/EnumOption.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Options/EnumOption.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """Place-holder for the old SCons.Options module hierarchy
 
diff --git a/src/engine/SCons/Options/ListOption.py b/src/engine/SCons/Options/ListOption.py
index 00c93d9..c9a7f8f 100644
--- a/src/engine/SCons/Options/ListOption.py
+++ b/src/engine/SCons/Options/ListOption.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Options/ListOption.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Options/ListOption.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """Place-holder for the old SCons.Options module hierarchy
 
diff --git a/src/engine/SCons/Options/PackageOption.py b/src/engine/SCons/Options/PackageOption.py
index 56624f0..5a12cbe 100644
--- a/src/engine/SCons/Options/PackageOption.py
+++ b/src/engine/SCons/Options/PackageOption.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Options/PackageOption.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Options/PackageOption.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """Place-holder for the old SCons.Options module hierarchy
 
diff --git a/src/engine/SCons/Options/PathOption.py b/src/engine/SCons/Options/PathOption.py
index a4b81ec..00070b1 100644
--- a/src/engine/SCons/Options/PathOption.py
+++ b/src/engine/SCons/Options/PathOption.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Options/PathOption.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Options/PathOption.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """Place-holder for the old SCons.Options module hierarchy
 
diff --git a/src/engine/SCons/Options/__init__.py b/src/engine/SCons/Options/__init__.py
index 5099712..5612ad0 100644
--- a/src/engine/SCons/Options/__init__.py
+++ b/src/engine/SCons/Options/__init__.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Options/__init__.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Options/__init__.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """Place-holder for the old SCons.Options module hierarchy
 
diff --git a/src/engine/SCons/PathList.py b/src/engine/SCons/PathList.py
index b359144..61b64ff 100644
--- a/src/engine/SCons/PathList.py
+++ b/src/engine/SCons/PathList.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/PathList.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/PathList.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """SCons.PathList
 
diff --git a/src/engine/SCons/PathListTests.py b/src/engine/SCons/PathListTests.py
index d3c2ddb..6af5d3a 100644
--- a/src/engine/SCons/PathListTests.py
+++ b/src/engine/SCons/PathListTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/PathListTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/PathListTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import sys
 import unittest
diff --git a/src/engine/SCons/Platform/PlatformTests.py b/src/engine/SCons/Platform/PlatformTests.py
index 6667e1e..417fad5 100644
--- a/src/engine/SCons/Platform/PlatformTests.py
+++ b/src/engine/SCons/Platform/PlatformTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/PlatformTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Platform/PlatformTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/Platform/__init__.py b/src/engine/SCons/Platform/__init__.py
index ca4bc9b..d8be160 100644
--- a/src/engine/SCons/Platform/__init__.py
+++ b/src/engine/SCons/Platform/__init__.py
@@ -42,7 +42,7 @@ their own platform definition.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/__init__.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Platform/__init__.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/Platform/aix.py b/src/engine/SCons/Platform/aix.py
index 44bccd1..f36eab6 100644
--- a/src/engine/SCons/Platform/aix.py
+++ b/src/engine/SCons/Platform/aix.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/aix.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Platform/aix.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import subprocess
diff --git a/src/engine/SCons/Platform/cygwin.py b/src/engine/SCons/Platform/cygwin.py
index d04bbe7..a901ac3 100644
--- a/src/engine/SCons/Platform/cygwin.py
+++ b/src/engine/SCons/Platform/cygwin.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/cygwin.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Platform/cygwin.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import posix
 from SCons.Platform import TempFileMunge
@@ -42,8 +42,8 @@ def generate(env):
     env['PROGSUFFIX']  = '.exe'
     env['SHLIBPREFIX'] = ''
     env['SHLIBSUFFIX'] = '.dll'
-    env['LIBPREFIXES'] = [ '$LIBPREFIX', '$SHLIBPREFIX' ]
-    env['LIBSUFFIXES'] = [ '$LIBSUFFIX', '$SHLIBSUFFIX' ]
+    env['LIBPREFIXES'] = [ '$LIBPREFIX', '$SHLIBPREFIX', '$IMPLIBPREFIX' ]
+    env['LIBSUFFIXES'] = [ '$LIBSUFFIX', '$SHLIBSUFFIX', '$IMPLIBSUFFIX' ]
     env['TEMPFILE']    = TempFileMunge
     env['TEMPFILEPREFIX'] = '@'
     env['MAXLINELENGTH']  = 2048
diff --git a/src/engine/SCons/Platform/darwin.py b/src/engine/SCons/Platform/darwin.py
index efd8ba4..73f140f 100644
--- a/src/engine/SCons/Platform/darwin.py
+++ b/src/engine/SCons/Platform/darwin.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/darwin.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Platform/darwin.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import posix
 import os
diff --git a/src/engine/SCons/Platform/hpux.py b/src/engine/SCons/Platform/hpux.py
index 2e2fbca..36e6764 100644
--- a/src/engine/SCons/Platform/hpux.py
+++ b/src/engine/SCons/Platform/hpux.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/hpux.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Platform/hpux.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import posix
 
diff --git a/src/engine/SCons/Platform/irix.py b/src/engine/SCons/Platform/irix.py
index 3bedbdf..e947b54 100644
--- a/src/engine/SCons/Platform/irix.py
+++ b/src/engine/SCons/Platform/irix.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/irix.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Platform/irix.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import posix
 
diff --git a/src/engine/SCons/Platform/os2.py b/src/engine/SCons/Platform/os2.py
index 82eb163..5f32844 100644
--- a/src/engine/SCons/Platform/os2.py
+++ b/src/engine/SCons/Platform/os2.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/os2.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Platform/os2.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 import win32
 
 def generate(env):
diff --git a/src/engine/SCons/Platform/posix.py b/src/engine/SCons/Platform/posix.py
index 8445863..78e80f3 100644
--- a/src/engine/SCons/Platform/posix.py
+++ b/src/engine/SCons/Platform/posix.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/posix.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Platform/posix.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import errno
 import os
diff --git a/src/engine/SCons/Platform/sunos.py b/src/engine/SCons/Platform/sunos.py
index 1c1d797..7646eb7 100644
--- a/src/engine/SCons/Platform/sunos.py
+++ b/src/engine/SCons/Platform/sunos.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/sunos.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Platform/sunos.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import posix
 
diff --git a/src/engine/SCons/Platform/win32.py b/src/engine/SCons/Platform/win32.py
index 3bad86b..f5c787a 100644
--- a/src/engine/SCons/Platform/win32.py
+++ b/src/engine/SCons/Platform/win32.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Platform/win32.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Platform/win32.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import os.path
diff --git a/src/engine/SCons/SConf.py b/src/engine/SCons/SConf.py
index 2ef4003..5a15856 100644
--- a/src/engine/SCons/SConf.py
+++ b/src/engine/SCons/SConf.py
@@ -34,7 +34,7 @@ libraries are installed, if some command line options are supported etc.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/SConf.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/SConf.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
@@ -444,6 +444,7 @@ class SConfBase(object):
                  'CheckCXXHeader'     : CheckCXXHeader,
                  'CheckLib'           : CheckLib,
                  'CheckLibWithHeader' : CheckLibWithHeader,
+                 'CheckProg'          : CheckProg,
                }
         self.AddTests(default_tests)
         self.AddTests(custom_tests)
@@ -1047,6 +1048,14 @@ def CheckLibWithHeader(context, libs, header, language,
     context.did_show_result = 1
     return not res
 
+def CheckProg(context, prog_name):
+    """Simple check if a program exists in the path.  Returns the path
+    for the application, or None if not found.
+    """
+    res = SCons.Conftest.CheckProg(context, prog_name)
+    context.did_show_result = 1
+    return res
+
 # Local Variables:
 # tab-width:4
 # indent-tabs-mode:nil
diff --git a/src/engine/SCons/SConfTests.py b/src/engine/SCons/SConfTests.py
index bb07952..1831b0d 100644
--- a/src/engine/SCons/SConfTests.py
+++ b/src/engine/SCons/SConfTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/SConfTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/SConfTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
@@ -611,6 +611,30 @@ int main() {
         finally:
             sconf.Finish()
 
+    def test_CheckProg(self):
+        """Test SConf.CheckProg()
+        """
+        self._resetSConfState()
+        sconf = self.SConf.SConf(self.scons_env,
+                                 conf_dir=self.test.workpath('config.tests'),
+                                 log_file=self.test.workpath('config.log'))
+
+        try:
+            if os.name != 'nt':
+                r = sconf.CheckProg('sh')
+                assert r, "/bin/sh"
+            else:
+                r = sconf.CheckProg('cmd.exe')
+                self.assertIn('cmd.exe',r)
+                
+                
+            r = sconf.CheckProg('hopefully-not-a-program')
+            assert r is None
+
+        finally:
+            sconf.Finish()
+
+
     def test_Define(self):
         """Test SConf.Define()
         """
diff --git a/src/engine/SCons/SConsign.py b/src/engine/SCons/SConsign.py
index e31a3eb..7ce8c5e 100644
--- a/src/engine/SCons/SConsign.py
+++ b/src/engine/SCons/SConsign.py
@@ -27,7 +27,7 @@ Writing and reading information to the .sconsign file or files.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/SConsign.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/SConsign.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/SConsignTests.py b/src/engine/SCons/SConsignTests.py
index e0e37b5..fb134da 100644
--- a/src/engine/SCons/SConsignTests.py
+++ b/src/engine/SCons/SConsignTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/SConsignTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/SConsignTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import sys
diff --git a/src/engine/SCons/Scanner/C.py b/src/engine/SCons/Scanner/C.py
index 33e1145..bdccb34 100644
--- a/src/engine/SCons/Scanner/C.py
+++ b/src/engine/SCons/Scanner/C.py
@@ -27,7 +27,7 @@ This module implements the depenency scanner for C/C++ code.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/C.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/C.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Node.FS
 import SCons.Scanner
diff --git a/src/engine/SCons/Scanner/CTests.py b/src/engine/SCons/Scanner/CTests.py
index fd73d35..82c1036 100644
--- a/src/engine/SCons/Scanner/CTests.py
+++ b/src/engine/SCons/Scanner/CTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/CTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/CTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/Scanner/D.py b/src/engine/SCons/Scanner/D.py
index 2c51a09..0b917d5 100644
--- a/src/engine/SCons/Scanner/D.py
+++ b/src/engine/SCons/Scanner/D.py
@@ -30,7 +30,7 @@ Coded by Andy Friesen
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/D.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/D.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import re
 
diff --git a/src/engine/SCons/Scanner/Dir.py b/src/engine/SCons/Scanner/Dir.py
index 7565423..6956d64 100644
--- a/src/engine/SCons/Scanner/Dir.py
+++ b/src/engine/SCons/Scanner/Dir.py
@@ -20,7 +20,7 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Scanner/Dir.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/Dir.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Node.FS
 import SCons.Scanner
diff --git a/src/engine/SCons/Scanner/DirTests.py b/src/engine/SCons/Scanner/DirTests.py
index 0cf3eba..fa6e4af 100644
--- a/src/engine/SCons/Scanner/DirTests.py
+++ b/src/engine/SCons/Scanner/DirTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/DirTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/DirTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 import sys
diff --git a/src/engine/SCons/Scanner/Fortran.py b/src/engine/SCons/Scanner/Fortran.py
index a1f3927..97cd3b2 100644
--- a/src/engine/SCons/Scanner/Fortran.py
+++ b/src/engine/SCons/Scanner/Fortran.py
@@ -26,7 +26,7 @@ This module implements the dependency scanner for Fortran code.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Scanner/Fortran.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/Fortran.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import re
 
diff --git a/src/engine/SCons/Scanner/FortranTests.py b/src/engine/SCons/Scanner/FortranTests.py
index 2012f12..9802aaa 100644
--- a/src/engine/SCons/Scanner/FortranTests.py
+++ b/src/engine/SCons/Scanner/FortranTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/FortranTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/FortranTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import os.path
diff --git a/src/engine/SCons/Scanner/IDL.py b/src/engine/SCons/Scanner/IDL.py
index 6758bd2..0df939c 100644
--- a/src/engine/SCons/Scanner/IDL.py
+++ b/src/engine/SCons/Scanner/IDL.py
@@ -28,7 +28,7 @@ Definition Language) files.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/IDL.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/IDL.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Node.FS
 import SCons.Scanner
diff --git a/src/engine/SCons/Scanner/IDLTests.py b/src/engine/SCons/Scanner/IDLTests.py
index 2051709..c0443c9 100644
--- a/src/engine/SCons/Scanner/IDLTests.py
+++ b/src/engine/SCons/Scanner/IDLTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/IDLTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/IDLTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import unittest
 import sys
diff --git a/src/engine/SCons/Scanner/LaTeX.py b/src/engine/SCons/Scanner/LaTeX.py
index aed074c..487627c 100644
--- a/src/engine/SCons/Scanner/LaTeX.py
+++ b/src/engine/SCons/Scanner/LaTeX.py
@@ -27,7 +27,7 @@ This module implements the dependency scanner for LaTeX code.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/LaTeX.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/LaTeX.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 import re
diff --git a/src/engine/SCons/Scanner/LaTeXTests.py b/src/engine/SCons/Scanner/LaTeXTests.py
index 515ac53..eed7d25 100644
--- a/src/engine/SCons/Scanner/LaTeXTests.py
+++ b/src/engine/SCons/Scanner/LaTeXTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/LaTeXTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/LaTeXTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/Scanner/Prog.py b/src/engine/SCons/Scanner/Prog.py
index c0511dc..d464c89 100644
--- a/src/engine/SCons/Scanner/Prog.py
+++ b/src/engine/SCons/Scanner/Prog.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/Prog.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/Prog.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Node
 import SCons.Node.FS
diff --git a/src/engine/SCons/Scanner/ProgTests.py b/src/engine/SCons/Scanner/ProgTests.py
index c155b9f..397bf5c 100644
--- a/src/engine/SCons/Scanner/ProgTests.py
+++ b/src/engine/SCons/Scanner/ProgTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/ProgTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/ProgTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 import sys
diff --git a/src/engine/SCons/Scanner/RC.py b/src/engine/SCons/Scanner/RC.py
index f73b47e..ea3893b 100644
--- a/src/engine/SCons/Scanner/RC.py
+++ b/src/engine/SCons/Scanner/RC.py
@@ -28,7 +28,7 @@ Definition Language) files.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/RC.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/RC.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Node.FS
 import SCons.Scanner
diff --git a/src/engine/SCons/Scanner/RCTests.py b/src/engine/SCons/Scanner/RCTests.py
index 428b94e..b720f8b 100644
--- a/src/engine/SCons/Scanner/RCTests.py
+++ b/src/engine/SCons/Scanner/RCTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/RCTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/RCTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import unittest
 import sys
diff --git a/src/engine/SCons/Scanner/ScannerTests.py b/src/engine/SCons/Scanner/ScannerTests.py
index d296813..26b17ec 100644
--- a/src/engine/SCons/Scanner/ScannerTests.py
+++ b/src/engine/SCons/Scanner/ScannerTests.py
@@ -20,7 +20,7 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Scanner/ScannerTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/ScannerTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/Scanner/__init__.py b/src/engine/SCons/Scanner/__init__.py
index d51cb9e..aca07e2 100644
--- a/src/engine/SCons/Scanner/__init__.py
+++ b/src/engine/SCons/Scanner/__init__.py
@@ -27,7 +27,7 @@ The Scanner package for the SCons software construction utility.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Scanner/__init__.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Scanner/__init__.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import re
 
diff --git a/src/engine/SCons/Script/Interactive.py b/src/engine/SCons/Script/Interactive.py
index afcde0c..afb35af 100644
--- a/src/engine/SCons/Script/Interactive.py
+++ b/src/engine/SCons/Script/Interactive.py
@@ -20,7 +20,7 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Script/Interactive.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Script/Interactive.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """
 SCons interactive mode
diff --git a/src/engine/SCons/Script/Main.py b/src/engine/SCons/Script/Main.py
index 6684fbd..d1ed77a 100644
--- a/src/engine/SCons/Script/Main.py
+++ b/src/engine/SCons/Script/Main.py
@@ -34,7 +34,7 @@ deprecated_python_version = (2, 7, 0)
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Script/Main.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Script/Main.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
@@ -484,6 +484,9 @@ def GetOption(name):
 def SetOption(name, value):
     return OptionsParser.values.set_option(name, value)
 
+def PrintHelp(file=None):
+    OptionsParser.print_help(file=file)
+
 #
 class Stats(object):
     def __init__(self):
diff --git a/src/engine/SCons/Script/MainTests.py b/src/engine/SCons/Script/MainTests.py
index 2e8e9d5..b5c7585 100644
--- a/src/engine/SCons/Script/MainTests.py
+++ b/src/engine/SCons/Script/MainTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Script/MainTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Script/MainTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import unittest
 
diff --git a/src/engine/SCons/Script/SConsOptions.py b/src/engine/SCons/Script/SConsOptions.py
index 7e458aa..6d02b0a 100644
--- a/src/engine/SCons/Script/SConsOptions.py
+++ b/src/engine/SCons/Script/SConsOptions.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Script/SConsOptions.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Script/SConsOptions.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import optparse
 import re
@@ -268,7 +268,7 @@ class SConsOptionParser(optparse.OptionParser):
     preserve_unknown_options = False
 
     def error(self, msg):
-        # overriden OptionValueError exception handler
+        # overridden OptionValueError exception handler
         self.print_usage(sys.stderr)
         sys.stderr.write("SCons Error: %s\n" % msg)
         sys.exit(2)
diff --git a/src/engine/SCons/Script/SConscript.py b/src/engine/SCons/Script/SConscript.py
index ead6f2e..2d66f5c 100644
--- a/src/engine/SCons/Script/SConscript.py
+++ b/src/engine/SCons/Script/SConscript.py
@@ -28,7 +28,7 @@ files.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 from __future__ import division
 
-__revision__ = "src/engine/SCons/Script/SConscript.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Script/SConscript.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons
 import SCons.Action
@@ -499,9 +499,9 @@ class SConsEnvironment(SCons.Environment.Base):
         name = self.subst(name)
         return SCons.Script.Main.GetOption(name)
 
-    def Help(self, text):
+    def Help(self, text, append=False):
         text = self.subst(text, raw=1)
-        SCons.Script.HelpFunction(text)
+        SCons.Script.HelpFunction(text, append=append)
 
     def Import(self, *vars):
         try:
diff --git a/src/engine/SCons/Script/SConscript.xml b/src/engine/SCons/Script/SConscript.xml
index 31fefb6..0557242 100644
--- a/src/engine/SCons/Script/SConscript.xml
+++ b/src/engine/SCons/Script/SConscript.xml
@@ -240,7 +240,7 @@ file is found.
 
 <scons_function name="Help">
 <arguments>
-(text)
+(text, append=False)
 </arguments>
 <summary>
 <para>
@@ -248,12 +248,18 @@ This specifies help text to be printed if the
 <option>-h</option>
 argument is given to
 &scons;.
-If
+If 
 &f-Help;
-is called multiple times, the text is appended together in the order
-that
+is called multiple times, the text is appended together in the order that 
 &f-Help;
-is called.
+is called. With append set to False, any 
+&f-Help;
+text generated with 
+&f-AddOption;
+is clobbered. If append is True, the AddOption help is prepended to the help
+string, thus preserving the 
+<option>-h</option>
+message.
 </para>
 </summary>
 </scons_function>
diff --git a/src/engine/SCons/Script/SConscriptTests.py b/src/engine/SCons/Script/SConscriptTests.py
index b78b31c..897c0dd 100644
--- a/src/engine/SCons/Script/SConscriptTests.py
+++ b/src/engine/SCons/Script/SConscriptTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Script/SConscriptTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Script/SConscriptTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Script.SConscript
 
diff --git a/src/engine/SCons/Script/__init__.py b/src/engine/SCons/Script/__init__.py
index c21882f..f9c4e51 100644
--- a/src/engine/SCons/Script/__init__.py
+++ b/src/engine/SCons/Script/__init__.py
@@ -34,13 +34,14 @@ it goes here.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Script/__init__.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Script/__init__.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import time
 start_time = time.time()
 
 import collections
 import os
+import StringIO
 import sys
 
 # Special chicken-and-egg handling of the "--debug=memoizer" flag:
@@ -107,6 +108,7 @@ QuestionTask            = Main.QuestionTask
 #SConscriptSettableOptions = Main.SConscriptSettableOptions
 
 AddOption               = Main.AddOption
+PrintHelp               = Main.PrintHelp
 GetOption               = Main.GetOption
 SetOption               = Main.SetOption
 Progress                = Main.Progress
@@ -258,12 +260,25 @@ def _Set_Default_Targets(env, tlist):
 #
 help_text = None
 
-def HelpFunction(text):
+def HelpFunction(text, append=False):
     global help_text
-    if SCons.Script.help_text is None:
-        SCons.Script.help_text = text
-    else:
-        help_text = help_text + text
+    if help_text is None:
+        if append:
+            s = StringIO.StringIO()
+            PrintHelp(s)  
+            help_text = s.getvalue()
+            s.close()
+        else:
+            help_text = ""
+#            
+# Was in original patch but this text is arbitrary and breaks tests
+# so I removed it (Deegan)
+#        help_text = help_text + "\nLocal Build Variables:\n" + text
+#    else:
+#        help_text = help_text + text
+
+    help_text= help_text + text
+
 
 #
 # Will be non-zero if we are reading an SConscript file.
@@ -318,6 +333,7 @@ GlobalDefaultEnvironmentFunctions = [
     'Ignore',
     'Install',
     'InstallAs',
+    'InstallVersionedLib',
     'Literal',
     'Local',
     'ParseDepends',
diff --git a/src/engine/SCons/Sig.py b/src/engine/SCons/Sig.py
index e949cfb..6069d55 100644
--- a/src/engine/SCons/Sig.py
+++ b/src/engine/SCons/Sig.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Sig.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Sig.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """Place-holder for the old SCons.Sig module hierarchy
 
diff --git a/src/engine/SCons/Subst.py b/src/engine/SCons/Subst.py
index da0fa68..8a3a359 100644
--- a/src/engine/SCons/Subst.py
+++ b/src/engine/SCons/Subst.py
@@ -26,7 +26,7 @@ SCons string substitution.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Subst.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Subst.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import collections
 import re
diff --git a/src/engine/SCons/SubstTests.py b/src/engine/SCons/SubstTests.py
index 9f52bd0..ba4e408 100644
--- a/src/engine/SCons/SubstTests.py
+++ b/src/engine/SCons/SubstTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/SubstTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/SubstTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/Taskmaster.py b/src/engine/SCons/Taskmaster.py
index b303f79..f77bde1 100644
--- a/src/engine/SCons/Taskmaster.py
+++ b/src/engine/SCons/Taskmaster.py
@@ -47,7 +47,7 @@ interface and the SCons build engine.  There are two key classes here:
         target(s) that it decides need to be evaluated and/or built.
 """
 
-__revision__ = "src/engine/SCons/Taskmaster.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Taskmaster.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 from itertools import chain
 import operator
diff --git a/src/engine/SCons/TaskmasterTests.py b/src/engine/SCons/TaskmasterTests.py
index 8cd71f8..ff94b6b 100644
--- a/src/engine/SCons/TaskmasterTests.py
+++ b/src/engine/SCons/TaskmasterTests.py
@@ -22,7 +22,7 @@
 #
 from __future__ import division
 
-__revision__ = "src/engine/SCons/TaskmasterTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/TaskmasterTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/Tool/386asm.py b/src/engine/SCons/Tool/386asm.py
index 06d271e..56b8b38 100644
--- a/src/engine/SCons/Tool/386asm.py
+++ b/src/engine/SCons/Tool/386asm.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/386asm.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/386asm.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 from SCons.Tool.PharLapCommon import addPharLapPaths
 import SCons.Util
diff --git a/src/engine/SCons/Tool/BitKeeper.py b/src/engine/SCons/Tool/BitKeeper.py
index 9df9f59..88fabd1 100644
--- a/src/engine/SCons/Tool/BitKeeper.py
+++ b/src/engine/SCons/Tool/BitKeeper.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/BitKeeper.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/BitKeeper.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Action
 import SCons.Builder
diff --git a/src/engine/SCons/Tool/CVS.py b/src/engine/SCons/Tool/CVS.py
index 14bc18e..e852236 100644
--- a/src/engine/SCons/Tool/CVS.py
+++ b/src/engine/SCons/Tool/CVS.py
@@ -29,7 +29,7 @@ selection method.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/CVS.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/CVS.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Action
 import SCons.Builder
diff --git a/src/engine/SCons/Tool/DCommon.py b/src/engine/SCons/Tool/DCommon.py
index db03660..c383349 100644
--- a/src/engine/SCons/Tool/DCommon.py
+++ b/src/engine/SCons/Tool/DCommon.py
@@ -28,7 +28,7 @@ Coded by Russel Winder (russel@winder.org.uk)
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/DCommon.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/DCommon.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 
diff --git a/src/engine/SCons/Tool/FortranCommon.py b/src/engine/SCons/Tool/FortranCommon.py
index b8ff7d9..45bd648 100644
--- a/src/engine/SCons/Tool/FortranCommon.py
+++ b/src/engine/SCons/Tool/FortranCommon.py
@@ -27,7 +27,7 @@ Stuff for processing Fortran, common to all fortran dialects.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/FortranCommon.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/FortranCommon.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import re
 import os.path
diff --git a/src/engine/SCons/Tool/GettextCommon.py b/src/engine/SCons/Tool/GettextCommon.py
index af9b074..36f8fa2 100644
--- a/src/engine/SCons/Tool/GettextCommon.py
+++ b/src/engine/SCons/Tool/GettextCommon.py
@@ -24,7 +24,7 @@ Used by several tools of `gettext` toolset.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/GettextCommon.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/GettextCommon.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Warnings
 import re
@@ -306,23 +306,6 @@ class RPaths(object):
        - Tuple of strings, which represent paths relative to current working
          directory (for given environment).
     """
-    # os.path.relpath is available only on python >= 2.6. We use our own
-    # implementation. It's taken from BareNecessities package:
-    #   http://jimmyg.org/work/code/barenecessities/index.html
-    from posixpath import curdir
-    def relpath(path, start=curdir):
-        import posixpath
-        """Return a relative version of a path"""
-        if not path:
-           raise ValueError("no path specified")
-        start_list = posixpath.abspath(start).split(posixpath.sep)
-        path_list = posixpath.abspath(path).split(posixpath.sep)
-        # Work out how much of the filepath is shared by start and path.
-        i = len(posixpath.commonprefix([start_list, path_list]))
-        rel_list = [posixpath.pardir] * (len(start_list)-i) + path_list[i:]
-        if not rel_list:
-           return posixpath.curdir
-        return posixpath.join(*rel_list)
     import os 
     import SCons.Node.FS
     rpaths = ()
@@ -330,7 +313,7 @@ class RPaths(object):
     for node in nodes:
       rpath = None
       if isinstance(node, SCons.Node.FS.Base):
-        rpath = relpath(node.get_abspath(), cwd)
+        rpath = os.path.relpath(node.get_abspath(), cwd)
       # FIXME: Other types possible here?
       if rpath is not None:
         rpaths += (rpath,)
diff --git a/src/engine/SCons/Tool/JavaCommon.py b/src/engine/SCons/Tool/JavaCommon.py
index 8b1e48e..0c14995 100644
--- a/src/engine/SCons/Tool/JavaCommon.py
+++ b/src/engine/SCons/Tool/JavaCommon.py
@@ -27,7 +27,7 @@ Stuff for processing Java.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/JavaCommon.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/JavaCommon.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import os.path
diff --git a/src/engine/SCons/Tool/JavaCommonTests.py b/src/engine/SCons/Tool/JavaCommonTests.py
index 95f1b36..e6a8c8c 100644
--- a/src/engine/SCons/Tool/JavaCommonTests.py
+++ b/src/engine/SCons/Tool/JavaCommonTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/JavaCommonTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/JavaCommonTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 import sys
diff --git a/src/engine/SCons/Tool/MSCommon/__init__.py b/src/engine/SCons/Tool/MSCommon/__init__.py
index 90cb0bc..6340a30 100644
--- a/src/engine/SCons/Tool/MSCommon/__init__.py
+++ b/src/engine/SCons/Tool/MSCommon/__init__.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/MSCommon/__init__.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/MSCommon/__init__.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """
 Common functions for Microsoft Visual Studio and Visual C/C++.
diff --git a/src/engine/SCons/Tool/MSCommon/arch.py b/src/engine/SCons/Tool/MSCommon/arch.py
index 5bc7ea5..8047215 100644
--- a/src/engine/SCons/Tool/MSCommon/arch.py
+++ b/src/engine/SCons/Tool/MSCommon/arch.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/MSCommon/arch.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/MSCommon/arch.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """Module to define supported Windows chip architectures.
 """
diff --git a/src/engine/SCons/Tool/MSCommon/common.py b/src/engine/SCons/Tool/MSCommon/common.py
index 60d7d40..a7bc407 100644
--- a/src/engine/SCons/Tool/MSCommon/common.py
+++ b/src/engine/SCons/Tool/MSCommon/common.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/MSCommon/common.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/MSCommon/common.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """
 Common helper functions for working with the Microsoft tool chain.
@@ -84,8 +84,8 @@ def is_win64():
     return _is_win64
 
 
-def read_reg(value):
-    return SCons.Util.RegGetValue(SCons.Util.HKEY_LOCAL_MACHINE, value)[0]
+def read_reg(value, hkroot=SCons.Util.HKEY_LOCAL_MACHINE):
+    return SCons.Util.RegGetValue(hkroot, value)[0]
 
 def has_reg(value):
     """Return True if the given key exists in HKEY_LOCAL_MACHINE, False
diff --git a/src/engine/SCons/Tool/MSCommon/netframework.py b/src/engine/SCons/Tool/MSCommon/netframework.py
index 0606e27..6062e11 100644
--- a/src/engine/SCons/Tool/MSCommon/netframework.py
+++ b/src/engine/SCons/Tool/MSCommon/netframework.py
@@ -20,7 +20,7 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/MSCommon/netframework.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/MSCommon/netframework.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """
 """
diff --git a/src/engine/SCons/Tool/MSCommon/sdk.py b/src/engine/SCons/Tool/MSCommon/sdk.py
index 537f367..1b605b9 100644
--- a/src/engine/SCons/Tool/MSCommon/sdk.py
+++ b/src/engine/SCons/Tool/MSCommon/sdk.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 
-__revision__ = "src/engine/SCons/Tool/MSCommon/sdk.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/MSCommon/sdk.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """Module to detect the Platform/Windows SDK
 
diff --git a/src/engine/SCons/Tool/MSCommon/vc.py b/src/engine/SCons/Tool/MSCommon/vc.py
index 02a32a0..7f12408 100644
--- a/src/engine/SCons/Tool/MSCommon/vc.py
+++ b/src/engine/SCons/Tool/MSCommon/vc.py
@@ -30,11 +30,12 @@
 #   * test on 64 bits XP +  VS 2005 (and VS 6 if possible)
 #   * SDK
 #   * Assembly
-__revision__ = "src/engine/SCons/Tool/MSCommon/vc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/MSCommon/vc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """Module for Visual C/C++ detection and configuration.
 """
 import SCons.compat
+import SCons.Util
 
 import os
 import platform
@@ -137,36 +138,50 @@ def get_host_target(env):
 _VCVER = ["14.0", "14.0Exp", "12.0", "12.0Exp", "11.0", "11.0Exp", "10.0", "10.0Exp", "9.0", "9.0Exp","8.0", "8.0Exp","7.1", "7.0", "6.0"]
 
 _VCVER_TO_PRODUCT_DIR = {
-        '14.0' : [
-            r'Microsoft\VisualStudio\14.0\Setup\VC\ProductDir'],
-        '14.0Exp' : [
-            r'Microsoft\VCExpress\14.0\Setup\VC\ProductDir'],
-        '12.0' : [
-            r'Microsoft\VisualStudio\12.0\Setup\VC\ProductDir'],
-        '12.0Exp' : [
-            r'Microsoft\VCExpress\12.0\Setup\VC\ProductDir'],
-        '11.0': [
-            r'Microsoft\VisualStudio\11.0\Setup\VC\ProductDir'],
-        '11.0Exp' : [
-            r'Microsoft\VCExpress\11.0\Setup\VC\ProductDir'],
-        '10.0': [
-            r'Microsoft\VisualStudio\10.0\Setup\VC\ProductDir'],
-        '10.0Exp' : [
-            r'Microsoft\VCExpress\10.0\Setup\VC\ProductDir'],
-        '9.0': [
-            r'Microsoft\VisualStudio\9.0\Setup\VC\ProductDir'],
-        '9.0Exp' : [
-            r'Microsoft\VCExpress\9.0\Setup\VC\ProductDir'],
-        '8.0': [
-            r'Microsoft\VisualStudio\8.0\Setup\VC\ProductDir'],
-        '8.0Exp': [
-            r'Microsoft\VCExpress\8.0\Setup\VC\ProductDir'],
-        '7.1': [
-            r'Microsoft\VisualStudio\7.1\Setup\VC\ProductDir'],
-        '7.0': [
-            r'Microsoft\VisualStudio\7.0\Setup\VC\ProductDir'],
-        '6.0': [
-            r'Microsoft\VisualStudio\6.0\Setup\Microsoft Visual C++\ProductDir']
+    '14.0' : [
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VisualStudio\14.0\Setup\VC\ProductDir')],
+    '14.0Exp' : [
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VCExpress\14.0\Setup\VC\ProductDir')],
+    '12.0' : [
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VisualStudio\12.0\Setup\VC\ProductDir'),
+        ],
+    '12.0Exp' : [
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VCExpress\12.0\Setup\VC\ProductDir'),
+        ],
+    '11.0': [
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VisualStudio\11.0\Setup\VC\ProductDir'),
+        ],
+    '11.0Exp' : [
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VCExpress\11.0\Setup\VC\ProductDir'),
+        ],
+    '10.0': [
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VisualStudio\10.0\Setup\VC\ProductDir'),
+        ],
+    '10.0Exp' : [
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VCExpress\10.0\Setup\VC\ProductDir'),
+        ],
+    '9.0': [
+        (SCons.Util.HKEY_CURRENT_USER, r'Microsoft\DevDiv\VCForPython\9.0\installdir',),
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VisualStudio\9.0\Setup\VC\ProductDir',),
+        ],
+    '9.0Exp' : [
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VCExpress\9.0\Setup\VC\ProductDir'),
+        ],
+    '8.0': [
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VisualStudio\8.0\Setup\VC\ProductDir'),
+        ],
+    '8.0Exp': [
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VCExpress\8.0\Setup\VC\ProductDir'),
+        ],
+    '7.1': [
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VisualStudio\7.1\Setup\VC\ProductDir'),
+        ],
+    '7.0': [
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VisualStudio\7.0\Setup\VC\ProductDir'),
+        ],
+    '6.0': [
+        (SCons.Util.HKEY_LOCAL_MACHINE, r'Microsoft\VisualStudio\6.0\Setup\Microsoft Visual C++\ProductDir'),
+        ]
 }
         
 def msvc_version_to_maj_min(msvc_version):
@@ -216,18 +231,25 @@ def find_vc_pdir(msvc_version):
     If for some reason the requested version could not be found, an
     exception which inherits from VisualCException will be raised."""
     root = 'Software\\'
-    if common.is_win64():
-        root = root + 'Wow6432Node\\'
     try:
         hkeys = _VCVER_TO_PRODUCT_DIR[msvc_version]
     except KeyError:
         debug("Unknown version of MSVC: %s" % msvc_version)
         raise UnsupportedVersion("Unknown version %s" % msvc_version)
 
-    for key in hkeys:
-        key = root + key
+    for hkroot, key in hkeys:
         try:
-            comps = common.read_reg(key)
+            comps = None
+            if common.is_win64():
+                try:
+                    # ordinally at win64, try Wow6432Node first.
+                    comps = common.read_reg(root + 'Wow6432Node\\' + key, hkroot)
+                except WindowsError, e:
+                    # at Microsoft Visual Studio for Python 2.7, value is not in Wow6432Node
+                    pass
+            if not comps:
+                # not Win64, or Microsoft Visual Studio for Python 2.7
+                comps = common.read_reg(root + key, hkroot)
         except WindowsError, e:
             debug('find_vc_dir(): no VC registry key %s' % repr(key))
         else:
diff --git a/src/engine/SCons/Tool/MSCommon/vs.py b/src/engine/SCons/Tool/MSCommon/vs.py
index 619cbe5..86cd3a4 100644
--- a/src/engine/SCons/Tool/MSCommon/vs.py
+++ b/src/engine/SCons/Tool/MSCommon/vs.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/MSCommon/vs.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/MSCommon/vs.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """Module to detect Visual Studio and/or Visual C/C++
 """
diff --git a/src/engine/SCons/Tool/Perforce.py b/src/engine/SCons/Tool/Perforce.py
index ddff25f..409c7be 100644
--- a/src/engine/SCons/Tool/Perforce.py
+++ b/src/engine/SCons/Tool/Perforce.py
@@ -29,7 +29,7 @@ selection method.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/Perforce.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/Perforce.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 
diff --git a/src/engine/SCons/Tool/PharLapCommon.py b/src/engine/SCons/Tool/PharLapCommon.py
index 576dea1..46acb2c 100644
--- a/src/engine/SCons/Tool/PharLapCommon.py
+++ b/src/engine/SCons/Tool/PharLapCommon.py
@@ -29,7 +29,7 @@ Phar Lap ETS tool chain.  Right now, this is linkloc and
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/PharLapCommon.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/PharLapCommon.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import os.path
diff --git a/src/engine/SCons/Tool/PharLapCommonTests.py b/src/engine/SCons/Tool/PharLapCommonTests.py
index d0e9ac0..e90a39f 100644
--- a/src/engine/SCons/Tool/PharLapCommonTests.py
+++ b/src/engine/SCons/Tool/PharLapCommonTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/PharLapCommonTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/PharLapCommonTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import unittest
 import os.path
diff --git a/src/engine/SCons/Tool/RCS.py b/src/engine/SCons/Tool/RCS.py
index d63bcd4..177e828 100644
--- a/src/engine/SCons/Tool/RCS.py
+++ b/src/engine/SCons/Tool/RCS.py
@@ -29,7 +29,7 @@ selection method.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/RCS.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/RCS.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Action
 import SCons.Builder
diff --git a/src/engine/SCons/Tool/SCCS.py b/src/engine/SCons/Tool/SCCS.py
index 76f69e7..772c889 100644
--- a/src/engine/SCons/Tool/SCCS.py
+++ b/src/engine/SCons/Tool/SCCS.py
@@ -29,7 +29,7 @@ selection method.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/SCCS.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/SCCS.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Action
 import SCons.Builder
diff --git a/src/engine/SCons/Tool/Subversion.py b/src/engine/SCons/Tool/Subversion.py
index 85470b1..cfcf7e7 100644
--- a/src/engine/SCons/Tool/Subversion.py
+++ b/src/engine/SCons/Tool/Subversion.py
@@ -29,7 +29,7 @@ selection method.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/Subversion.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/Subversion.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 
diff --git a/src/engine/SCons/Tool/ToolTests.py b/src/engine/SCons/Tool/ToolTests.py
index a4da490..2e4d65d 100644
--- a/src/engine/SCons/Tool/ToolTests.py
+++ b/src/engine/SCons/Tool/ToolTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/ToolTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/ToolTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import sys
 import unittest
diff --git a/src/engine/SCons/Tool/__init__.py b/src/engine/SCons/Tool/__init__.py
index bb9729a..ac24134 100644
--- a/src/engine/SCons/Tool/__init__.py
+++ b/src/engine/SCons/Tool/__init__.py
@@ -35,7 +35,7 @@ tool definition.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/__init__.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/__init__.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import imp
 import sys
@@ -236,150 +236,436 @@ def createStaticLibBuilder(env):
 
     return static_lib
 
-def VersionShLibLinkNames(version, libname, env):
-    """Generate names of symlinks to the versioned shared library"""
+def _call_linker_cb(env, callback, args, result = None):
+    """Returns the result of env['LINKCALLBACKS'][callback](*args)
+    if env['LINKCALLBACKS'] is a dictionary and env['LINKCALLBACKS'][callback]
+    is callable. If these conditions are not met, return the value provided as
+    the *result* argument. This function is mainly used for generating library
+    info such as versioned suffixes, symlink maps, sonames etc. by delegating
+    the core job to callbacks configured by current linker tool"""
+
     Verbose = False
-    platform = env.subst('$PLATFORM')
-    shlib_suffix = env.subst('$SHLIBSUFFIX')
-    shlink_flags = SCons.Util.CLVar(env.subst('$SHLINKFLAGS'))
-
-    linknames = []
-    if version.count(".") != 2:
-        # We need a version string of the form x.y.z to proceed
-        # Several changes need to be made to support versions like x.y
-        raise ValueError
-
-    if platform == 'darwin':
-        # For libfoo.x.y.z.dylib, linknames libfoo.so
-        suffix_re = re.escape('.' + version + shlib_suffix)
-        linkname = re.sub(suffix_re, shlib_suffix, libname)
+
+    if Verbose:
+        print '_call_linker_cb: args=%r' % args
+        print '_call_linker_cb: callback=%r' % callback
+    
+    try:
+        cbfun = env['LINKCALLBACKS'][callback]
+    except (KeyError, TypeError):
         if Verbose:
-            print "VersionShLibLinkNames: linkname = ",linkname
-        linknames.append(linkname)
-    elif platform == 'posix' or platform == 'sunos':
-        if sys.platform.startswith('openbsd'):
-            # OpenBSD uses x.y shared library versioning numbering convention
-            # and doesn't use symlinks to backwards-compatible libraries
-            return []
-        # For libfoo.so.x.y.z, linknames libfoo.so libfoo.so.x.y libfoo.so.x
-        suffix_re = re.escape(shlib_suffix + '.' + version)
-        # First linkname has no version number
-        linkname = re.sub(suffix_re, shlib_suffix, libname)
+            print '_call_linker_cb: env["LINKCALLBACKS"][%r] not found or can not be used' % callback
+        pass
+    else:
         if Verbose:
-            print "VersionShLibLinkNames: linkname = ",linkname
-        linknames.append(linkname)
-        versionparts = version.split('.')
-        major_name = linkname + "." + versionparts[0]
-        minor_name = major_name + "." + versionparts[1]
-        #Only add link for major_name
-        #for linkname in [major_name, minor_name]:
-        for linkname in [major_name, ]:
+            print '_call_linker_cb: env["LINKCALLBACKS"][%r] found' % callback
+            print '_call_linker_cb: env["LINKCALLBACKS"][%r]=%r' % (callback, cbfun)
+        if(callable(cbfun)):
             if Verbose:
-                print "VersionShLibLinkNames: linkname ",linkname, ", target ",libname
-            linknames.append(linkname)
-    # note: no Windows case here (win32 or cygwin);
-    # MSVC doesn't support this type of versioned shared libs.
-    # (could probably do something for MinGW though)
-    return linknames
-
-def VersionedSharedLibrary(target = None, source= None, env=None):
-    """Build a shared library. If the environment has SHLIBVERSION
-defined make a versioned shared library and create the appropriate
-symlinks for the platform we are on"""
-    Verbose = False
-    try:
-        version = env.subst('$SHLIBVERSION')
-    except KeyError:
-        version = None
+                print '_call_linker_cb: env["LINKCALLBACKS"][%r] is callable' % callback
+            result = cbfun(env, *args)
+    return result
 
-    # libname includes the version number if one was given
-    libname = getattr(target[0].attributes, 'shlibname', target[0].name)
-    platform = env.subst('$PLATFORM')
-    shlib_suffix = env.subst('$SHLIBSUFFIX')
-    shlink_flags = SCons.Util.CLVar(env.subst('$SHLINKFLAGS'))
-    if Verbose:
-        print "VersionShLib: libname      = ",libname
-        print "VersionShLib: platform     = ",platform
-        print "VersionShLib: shlib_suffix = ",shlib_suffix
-        print "VersionShLib: target = ",str(target[0])
-
-    if version:
-        # set the shared library link flags
-        if platform == 'posix':
-            shlink_flags += [ '-Wl,-Bsymbolic' ]
-            # OpenBSD doesn't usually use SONAME for libraries
-            if not sys.platform.startswith('openbsd'):
-                # continue setup of shlink flags for all other POSIX systems
-                suffix_re = re.escape(shlib_suffix + '.' + version)
-                (major, age, revision) = version.split(".")
-                # soname will have only the major version number in it
-                soname = re.sub(suffix_re, shlib_suffix, libname) + '.' + major
-                shlink_flags += [ '-Wl,-soname=%s' % soname ]
-                if Verbose:
-                    print " soname ",soname,", shlink_flags ",shlink_flags
-        elif platform == 'sunos':
-            suffix_re = re.escape(shlib_suffix + '.' + version)
-            (major, age, revision) = version.split(".")
-            soname = re.sub(suffix_re, shlib_suffix, libname) + '.' + major
-            shlink_flags += [ '-h', soname ]
-        elif platform == 'cygwin':
-            shlink_flags += [ '-Wl,-Bsymbolic',
-                              '-Wl,--out-implib,${TARGET.base}.a' ]
-        elif platform == 'darwin':
-            shlink_flags += [ '-current_version', '%s' % version,
-                              '-compatibility_version', '%s' % version,
-                              '-undefined', 'dynamic_lookup' ]
+def _call_env_subst(env, string, *args, **kw):
+    kw2 = {}
+    for k in ('raw', 'target', 'source', 'conv', 'executor'):
+        try: kw2[k] = kw[k]
+        except KeyError: pass
+    return env.subst(string, *args, **kw2)
+
+class _ShLibInfoSupport(object):
+    def get_libtype(self):
+        return 'ShLib'
+    def get_lib_prefix(self, env, *args, **kw):
+        return _call_env_subst(env,'$SHLIBPREFIX', *args, **kw)
+    def get_lib_suffix(self, env, *args, **kw):
+        return _call_env_subst(env,'$SHLIBSUFFIX', *args, **kw)
+    def get_lib_version(self, env, *args, **kw):
+        return _call_env_subst(env,'$SHLIBVERSION', *args, **kw)
+    def get_lib_noversionsymlinks(self, env, *args, **kw):
+        return _call_env_subst(env,'$SHLIBNOVERSIONSYMLINKS', *args, **kw)
+
+class _LdModInfoSupport(object):
+    def get_libtype(self):
+        return 'LdMod'
+    def get_lib_prefix(self, env, *args, **kw):
+        return _call_env_subst(env,'$LDMODULEPREFIX', *args, **kw)
+    def get_lib_suffix(self, env, *args, **kw):
+        return _call_env_subst(env,'$LDMODULESUFFIX', *args, **kw)
+    def get_lib_version(self, env, *args, **kw):
+        return _call_env_subst(env,'$LDMODULEVERSION', *args, **kw)
+    def get_lib_noversionsymlinks(self, env, *args, **kw):
+        return _call_env_subst(env,'$LDMODULENOVERSIONSYMLINKS', *args, **kw)
+
+class _ImpLibInfoSupport(object):
+    def get_libtype(self):
+        return 'ImpLib'
+    def get_lib_prefix(self, env, *args, **kw):
+        return _call_env_subst(env,'$IMPLIBPREFIX', *args, **kw)
+    def get_lib_suffix(self, env, *args, **kw):
+        return _call_env_subst(env,'$IMPLIBSUFFIX', *args, **kw)
+    def get_lib_version(self, env, *args, **kw):
+        version = _call_env_subst(env,'$IMPLIBVERSION', *args, **kw)
+        if not version:
+            try: lt = kw['implib_libtype']
+            except KeyError: pass
+            else:
+                if lt == 'ShLib':
+                    version = _call_env_subst(env,'$SHLIBVERSION', *args, **kw)
+                elif lt == 'LdMod':
+                    version = _call_env_subst(env,'$LDMODULEVERSION', *args, **kw)
+        return version
+    def get_lib_noversionsymlinks(self, env, *args, **kw):
+        disable = None
+        try: env['IMPLIBNOVERSIONSYMLINKS']
+        except KeyError:
+            try: lt = kw['implib_libtype']
+            except KeyError: pass
+            else:
+                if lt == 'ShLib':
+                    disable = _call_env_subst(env,'$SHLIBNOVERSIONSYMLINKS', *args, **kw)
+                elif lt == 'LdMod':
+                    disable = _call_env_subst(env,'$LDMODULENOVERSIONSYMLINKS', *args, **kw)
+        else:
+            disable = _call_env_subst(env,'$IMPLIBNOVERSIONSYMLINKS', *args, **kw)
+        return disable
+
+class _LibInfoGeneratorBase(object):
+    """Generator base class for library-related info such as suffixes for
+    versioned libraries, symlink maps, sonames etc. It handles commonities
+    of SharedLibrary and LoadableModule
+    """
+    _support_classes = { 'ShLib'  : _ShLibInfoSupport,
+                         'LdMod'  : _LdModInfoSupport,
+                         'ImpLib' : _ImpLibInfoSupport }
+    def __init__(self, libtype, infoname):
+        self.set_libtype(libtype)
+        self.set_infoname(infoname)
+
+    def set_libtype(self, libtype):
+        try:
+            support_class = self._support_classes[libtype]
+        except KeyError:
+            raise ValueError('unsupported libtype %r' % libtype)
+        self._support = support_class()
+
+    def get_libtype(self):
+        return self._support.get_libtype()
+
+    def set_infoname(self, infoname):
+        self.infoname = infoname
+
+    def get_infoname(self):
+        return self.infoname
+
+    def get_lib_prefix(self, env, *args, **kw):
+        return self._support.get_lib_prefix(env,*args,**kw)
+
+    def get_lib_suffix(self, env, *args, **kw):
+        return self._support.get_lib_suffix(env,*args,**kw)
+
+    def get_lib_version(self, env, *args, **kw):
+        return self._support.get_lib_version(env,*args,**kw)
+
+    def get_lib_noversionsymlinks(self, env, *args, **kw):
+        return self._support.get_lib_noversionsymlinks(env,*args,**kw)
+
+    # Returns name of generator linker callback that shall be used to generate
+    # our info for a versioned library. For example, if our libtype is 'ShLib'
+    # and infoname is 'Prefix', it would return 'VersionedShLibPrefix'.
+    def get_versioned_lib_info_generator(self, **kw):
+        try: libtype = kw['generator_libtype']
+        except KeyError: libtype = self.get_libtype()
+        infoname = self.get_infoname()
+        return 'Versioned%s%s' % (libtype, infoname)
+
+    def generate_versioned_lib_info(self, env, args, result = None, **kw):
+        callback = self.get_versioned_lib_info_generator(**kw)
+        return _call_linker_cb(env, callback, args, result) 
+
+class _LibPrefixGenerator(_LibInfoGeneratorBase):
+    """Library prefix generator, used as target_prefix in SharedLibrary and
+    LoadableModule builders"""
+    def __init__(self, libtype):
+        super(_LibPrefixGenerator, self).__init__(libtype, 'Prefix')
+
+    def __call__(self, env, sources = None, **kw):
+        Verbose = False
+
+        if sources and 'source' not in kw:
+            kw2 = kw.copy()
+            kw2['source'] = sources
+        else:
+            kw2 = kw
+
+        prefix = self.get_lib_prefix(env,**kw2)
         if Verbose:
-            print "VersionShLib: shlink_flags = ",shlink_flags
-        envlink = env.Clone()
-        envlink['SHLINKFLAGS'] = shlink_flags
-    else:
-        envlink = env
+            print "_LibPrefixGenerator: input prefix=%r" % prefix
+
+        version = self.get_lib_version(env, **kw2)
+        if Verbose:
+            print "_LibPrefixGenerator: version=%r" % version
 
-    result = SCons.Defaults.ShLinkAction(target, source, envlink)
+        if version:
+            prefix = self.generate_versioned_lib_info(env, [prefix, version], prefix, **kw2)
 
-    if version:
-        # here we need the full pathname so the links end up in the right directory
-        libname = getattr(target[0].attributes, 'shlibpath', target[0].get_internal_path())
         if Verbose:
-            print "VerShLib: target lib is = ", libname
-            print "VerShLib: name is = ", target[0].name
-            print "VerShLib: dir is = ", target[0].dir.path
-        linknames = VersionShLibLinkNames(version, libname, env)
+            print "_LibPrefixGenerator: return prefix=%r" % prefix
+        return prefix
+
+ShLibPrefixGenerator  = _LibPrefixGenerator('ShLib')
+LdModPrefixGenerator  = _LibPrefixGenerator('LdMod')
+ImpLibPrefixGenerator = _LibPrefixGenerator('ImpLib')
+
+class _LibSuffixGenerator(_LibInfoGeneratorBase):
+    """Library suffix generator, used as target_suffix in SharedLibrary and
+    LoadableModule builders"""
+    def __init__(self, libtype):
+        super(_LibSuffixGenerator, self).__init__(libtype, 'Suffix')
+
+    def __call__(self, env, sources = None, **kw):
+        Verbose = False
+
+        if sources and 'source' not in kw:
+            kw2 = kw.copy()
+            kw2['source'] = sources
+        else:
+            kw2 = kw
+
+        suffix = self.get_lib_suffix(env, **kw2)
         if Verbose:
-            print "VerShLib: linknames ",linknames
-        # Here we just need the file name w/o path as the target of the link
-        lib_ver = getattr(target[0].attributes, 'shlibname', target[0].name)
-        # make symlink of adjacent names in linknames
-        for count in range(len(linknames)):
-            linkname = linknames[count]
-            if count > 0:
-                try:
-                    os.remove(lastlinkname)
-                except:
-                    pass
-                os.symlink(os.path.basename(linkname),lastlinkname)
-                if Verbose:
-                    print "VerShLib: made sym link of %s -> %s" % (lastlinkname,linkname)
-            lastlinkname = linkname
-        # finish chain of sym links with link to the actual library
-        if len(linknames)>0:
+            print "_LibSuffixGenerator: input suffix=%r" % suffix
+
+        version = self.get_lib_version(env, **kw2)
+        if Verbose:
+            print "_LibSuffixGenerator: version=%r" % version
+
+        if version:
+            suffix = self.generate_versioned_lib_info(env, [suffix, version], suffix, **kw2)
+
+        if Verbose:
+            print "_LibSuffixGenerator: return suffix=%r" % suffix
+        return suffix
+
+ShLibSuffixGenerator  = _LibSuffixGenerator('ShLib')
+LdModSuffixGenerator  = _LibSuffixGenerator('LdMod')
+ImpLibSuffixGenerator = _LibSuffixGenerator('ImpLib')
+
+class _LibSymlinkGenerator(_LibInfoGeneratorBase):
+    """Library symlink map generator. It generates a list of symlinks that
+    should be created by SharedLibrary or LoadableModule builders"""
+    def __init__(self, libtype):
+        super(_LibSymlinkGenerator, self).__init__(libtype, 'Symlinks')
+
+    def __call__(self, env, libnode, **kw):
+        Verbose = False
+
+        if libnode and 'target' not in kw:
+            kw2 = kw.copy()
+            kw2['target'] = libnode
+        else:
+            kw2 = kw
+
+        if Verbose:
+            print "_LibSymLinkGenerator: libnode=%r" % libnode.get_path()
+
+        symlinks = None
+
+        version = self.get_lib_version(env, **kw2)
+        disable = self.get_lib_noversionsymlinks(env, **kw2)
+        if Verbose:
+            print '_LibSymlinkGenerator: version=%r' % version
+            print '_LibSymlinkGenerator: disable=%r' % disable
+
+        if version and not disable:
+            prefix = self.get_lib_prefix(env,**kw2)
+            suffix = self.get_lib_suffix(env,**kw2)
+            symlinks = self.generate_versioned_lib_info(env, [libnode, version, prefix, suffix], **kw2)
+
+        if Verbose:
+            print '_LibSymlinkGenerator: return symlinks=%r' % StringizeLibSymlinks(symlinks)
+        return symlinks
+
+ShLibSymlinkGenerator =  _LibSymlinkGenerator('ShLib')
+LdModSymlinkGenerator =  _LibSymlinkGenerator('LdMod')
+ImpLibSymlinkGenerator = _LibSymlinkGenerator('ImpLib')
+
+class _LibNameGenerator(_LibInfoGeneratorBase):
+    """Generates "unmangled" library name from a library file node.
+    
+    Generally, it's thought to revert modifications done by prefix/suffix
+    generators (_LibPrefixGenerator/_LibSuffixGenerator) used by a library
+    builder. For example, on gnulink the suffix generator used by SharedLibrary
+    builder appends $SHLIBVERSION to $SHLIBSUFFIX producing node name which
+    ends with "$SHLIBSUFFIX.$SHLIBVERSION". Correspondingly, the implementation
+    of _LibNameGenerator replaces "$SHLIBSUFFIX.$SHLIBVERSION" with
+    "$SHLIBSUFFIX" in the node's basename. So that, if $SHLIBSUFFIX is ".so",
+    $SHLIBVERSION is "0.1.2" and the node path is "/foo/bar/libfoo.so.0.1.2",
+    the _LibNameGenerator shall return "libfoo.so". Other link tools may
+    implement it's own way of library name unmangling. 
+    """
+    def __init__(self, libtype):
+        super(_LibNameGenerator, self).__init__(libtype, 'Name')
+
+    def __call__(self, env, libnode, **kw):
+        """Returns "demangled" library name"""
+        Verbose = False
+
+        if libnode and 'target' not in kw:
+            kw2 = kw.copy()
+            kw2['target'] = libnode
+        else:
+            kw2 = kw
+
+        if Verbose:
+            print "_LibNameGenerator: libnode=%r" % libnode.get_path()
+
+        version = self.get_lib_version(env, **kw2)
+        if Verbose:
+            print '_LibNameGenerator: version=%r' % version
+
+        name = None
+        if version:
+            prefix = self.get_lib_prefix(env,**kw2)
+            suffix = self.get_lib_suffix(env,**kw2)
+            name = self.generate_versioned_lib_info(env, [libnode, version, prefix, suffix], **kw2)
+
+        if not name:
+            name = os.path.basename(libnode.get_path())
+
+        if Verbose:
+            print '_LibNameGenerator: return name=%r' % name
+
+        return name
+
+ShLibNameGenerator =  _LibNameGenerator('ShLib')
+LdModNameGenerator =  _LibNameGenerator('LdMod')
+ImpLibNameGenerator = _LibNameGenerator('ImpLib')
+
+class _LibSonameGenerator(_LibInfoGeneratorBase):
+    """Library soname generator. Returns library soname (e.g. libfoo.so.0) for 
+    a given node (e.g. /foo/bar/libfoo.so.0.1.2)"""
+    def __init__(self, libtype):
+        super(_LibSonameGenerator, self).__init__(libtype, 'Soname')
+
+    def __call__(self, env, libnode, **kw):
+        """Returns a SONAME based on a shared library's node path"""
+        Verbose = False
+
+        if libnode and 'target' not in kw:
+            kw2 = kw.copy()
+            kw2['target'] = libnode
+        else:
+            kw2 = kw
+
+        if Verbose:
+            print "_LibSonameGenerator: libnode=%r" % libnode.get_path()
+
+        soname = _call_env_subst(env, '$SONAME', **kw2)
+        if not soname:
+            version = self.get_lib_version(env,**kw2)
+            if Verbose:
+                print "_LibSonameGenerator: version=%r" % version
+            if version:
+                prefix = self.get_lib_prefix(env,**kw2)
+                suffix = self.get_lib_suffix(env,**kw2)
+                soname = self.generate_versioned_lib_info(env, [libnode, version, prefix, suffix], **kw2)
+
+        if not soname:
+            # fallback to library name (as returned by appropriate _LibNameGenerator)
+            soname = _LibNameGenerator(self.get_libtype())(env, libnode)
+            if Verbose:
+                print "_LibSonameGenerator: FALLBACK: soname=%r" % soname
+
+        if Verbose:
+            print "_LibSonameGenerator: return soname=%r" % soname
+
+        return soname
+
+ShLibSonameGenerator =  _LibSonameGenerator('ShLib')
+LdModSonameGenerator =  _LibSonameGenerator('LdMod')
+
+def StringizeLibSymlinks(symlinks):
+    """Converts list with pairs of nodes to list with pairs of node paths
+    (strings). Used mainly for debugging."""
+    if SCons.Util.is_List(symlinks):
+        try:
+            return [ (k.get_path(), v.get_path()) for k,v in symlinks ]
+        except (TypeError, ValueError):
+            return symlinks
+    else:
+        return symlinks
+
+def EmitLibSymlinks(env, symlinks, libnode, **kw):
+    """Used by emitters to handle (shared/versioned) library symlinks"""
+    Verbose = False
+
+    # nodes involved in process... all symlinks + library
+    nodes = list(set([ x for x,y in symlinks ] + [libnode]))
+
+    clean_targets = kw.get('clean_targets', [])
+    if not SCons.Util.is_List(clean_targets):
+        clean_targets = [ clean_targets ]
+      
+    for link, linktgt in symlinks:
+        env.SideEffect(link, linktgt)
+        if(Verbose):
+            print "EmitLibSymlinks: SideEffect(%r,%r)" % (link.get_path(), linktgt.get_path())
+        clean_list = filter(lambda x : x != linktgt, nodes)
+        env.Clean(list(set([linktgt] + clean_targets)), clean_list)
+        if(Verbose):
+            print "EmitLibSymlinks: Clean(%r,%r)" % (linktgt.get_path(), map(lambda x : x.get_path(), clean_list))
+
+def CreateLibSymlinks(env, symlinks):
+    """Physically creates symlinks. The symlinks argument must be a list in
+    form [ (link, linktarget), ... ], where link and linktarget are SCons
+    nodes.
+    """
+    
+    Verbose = False
+    for link, linktgt in symlinks:
+        linktgt = link.get_dir().rel_path(linktgt)
+        link = link.get_path()
+        if(Verbose):
+            print "CreateLibSymlinks: preparing to add symlink %r -> %r" % (link, linktgt)
+        # Delete the (previously created) symlink if exists. Let only symlinks
+        # to be deleted to prevent accidental deletion of source files...
+        if env.fs.islink(link):
+            env.fs.unlink(link)
+            if(Verbose):
+                print "CreateLibSymlinks: removed old symlink %r" % link
+        # If a file or directory exists with the same name as link, an OSError
+        # will be thrown, which should be enough, I think.
+        env.fs.symlink(linktgt, link)
+        if(Verbose):
+            print "CreateLibSymlinks: add symlink %r -> %r" % (link, linktgt)
+    return 0
+
+def LibSymlinksActionFunction(target, source, env):
+    for tgt in target:
+        symlinks = getattr(getattr(tgt,'attributes', None), 'shliblinks', None)
+        if symlinks:
+            CreateLibSymlinks(env, symlinks)
+    return 0
+
+def LibSymlinksStrFun(target, source, env, *args):
+    cmd = None
+    for tgt in target:
+        symlinks = getattr(getattr(tgt,'attributes', None), 'shliblinks', None)
+        if symlinks:
+            if cmd is None: cmd = ""
+            if cmd: cmd += "\n"
+            cmd += "Create symlinks for: %r" % tgt.get_path()
             try:
-                os.remove(lastlinkname)
-            except:
+                linkstr = ', '.join([ "%r->%r" %(k,v) for k,v in StringizeLibSymlinks(symlinks)])
+            except (KeyError, ValueError):
                 pass
-            os.symlink(lib_ver,lastlinkname)
-            if Verbose:
-                print "VerShLib: made sym link of %s -> %s" % (linkname, lib_ver)
-    return result
+            else:
+                cmd += ": %s" % linkstr
+    return cmd
+    
 
-# Fix http://scons.tigris.org/issues/show_bug.cgi?id=2903 :
-# Ensure we still depend on SCons.Defaults.ShLinkAction command line which is $SHLINKCOM.
-# This was tricky because we don't want changing LIBPATH to cause a rebuild, but
-# changing other link args should.  LIBPATH has $( ... $) around it but until this
-# fix, when the varlist was added to the build sig those ignored parts weren't getting
-# ignored.
-ShLibAction = SCons.Action.Action(VersionedSharedLibrary, None, varlist=['SHLINKCOM'])
+LibSymlinksAction = SCons.Action.Action(LibSymlinksActionFunction, LibSymlinksStrFun)
 
 def createSharedLibBuilder(env):
     """This is a utility function that creates the SharedLibrary
@@ -393,11 +679,12 @@ def createSharedLibBuilder(env):
     except KeyError:
         import SCons.Defaults
         action_list = [ SCons.Defaults.SharedCheck,
-                        ShLibAction ]
+                        SCons.Defaults.ShLinkAction,
+                        LibSymlinksAction ]
         shared_lib = SCons.Builder.Builder(action = action_list,
                                            emitter = "$SHLIBEMITTER",
-                                           prefix = '$SHLIBPREFIX',
-                                           suffix = '$SHLIBSUFFIX',
+                                           prefix = ShLibPrefixGenerator,
+                                           suffix = ShLibSuffixGenerator,
                                            target_scanner = ProgramScanner,
                                            src_suffix = '$SHOBJSUFFIX',
                                            src_builder = 'SharedObject')
@@ -417,11 +704,12 @@ def createLoadableModuleBuilder(env):
     except KeyError:
         import SCons.Defaults
         action_list = [ SCons.Defaults.SharedCheck,
-                        SCons.Defaults.LdModuleLinkAction ]
+                        SCons.Defaults.LdModuleLinkAction,
+                        LibSymlinksAction ]
         ld_module = SCons.Builder.Builder(action = action_list,
                                           emitter = "$LDMODULEEMITTER",
-                                          prefix = '$LDMODULEPREFIX',
-                                          suffix = '$LDMODULESUFFIX',
+                                          prefix = LdModPrefixGenerator,
+                                          suffix = LdModSuffixGenerator,
                                           target_scanner = ProgramScanner,
                                           src_suffix = '$SHOBJSUFFIX',
                                           src_builder = 'SharedObject')
diff --git a/src/engine/SCons/Tool/__init__.xml b/src/engine/SCons/Tool/__init__.xml
index d53bcb2..970a7f1 100644
--- a/src/engine/SCons/Tool/__init__.xml
+++ b/src/engine/SCons/Tool/__init__.xml
@@ -200,22 +200,20 @@ For maximum portability, use the &b-LoadableModule; builder for the latter.
 When the &cv-link-SHLIBVERSION; construction variable is defined a versioned
 shared library is created. This modifies the &cv-link-SHLINKFLAGS; as required,
 adds the version number to the library name, and creates the symlinks that
-are needed. &cv-link-SHLIBVERSION; needs to be of the form X.Y.Z, where X
-and Y are numbers, and Z is a number but can also contain letters to designate
-alpha, beta, or release candidate patch levels.
+are needed.
 </para>
 
 <example_commands>
 env.SharedLibrary(target = 'bar', source = ['bar.c', 'foo.o'], SHLIBVERSION='1.5.2')
 </example_commands>
 
-
 <para>
-This builder may create multiple links to the library. On a POSIX system,
-for the shared library libbar.so.2.3.1, the links created would be
-libbar.so and libbar.so.2; on a Darwin (OSX) system
-the library would be libbar.2.3.1.dylib and the link would be
-libbar.dylib.
+On a POSIX system, versions with a single token create exactly one symlink:
+libbar.so.6 would have symlinks libbar.so only.
+On a POSIX system, versions with two or more
+tokens create exactly two symlinks: libbar.so.2.3.1 would have symlinks
+libbar.so and libbar.so.2; on a Darwin (OSX) system the library would be
+libbar.2.3.1.dylib and the link would be libbar.dylib.
 </para>
 
 <para>
@@ -464,6 +462,17 @@ as C++ files.
 </summary>
 </cvar>
 
+<cvar name="IMPLIBVERSION">
+<summary>
+<para>
+Used to override &cv-link-SHLIBVERSION;/&cv-link-LDMODULEVERSION; when
+generating versioned import library for a shared library/loadable module. If
+undefined, the &cv-link-SHLIBVERSION;/&cv-link-LDMODULEVERSION; is used to
+determine the version of versioned import library. 
+</para>
+</summary>
+</cvar>
+
 <cvar name="LIBEMITTER">
 <summary>
 <para>
@@ -472,6 +481,19 @@ TODO
 </summary>
 </cvar>
 
+<cvar name="LDMODULEVERSION">
+<summary>
+<para>
+When this construction variable is defined, a versioned loadable module
+is created by &b-link-LoadableModule; builder. This activates the
+&cv-link-_LDMODULEVERSIONFLAGS; and thus modifies the &cv-link-LDMODULECOM; as
+required, adds the version number to the library name, and creates the symlinks
+that are needed. &cv-link-LDMODULEVERSION; versions should exist in the same
+format as &cv-link-SHLIBVERSION;.
+</para>
+</summary>
+</cvar>
+
 <cvar name="SHLIBEMITTER">
 <summary>
 <para>
@@ -492,11 +514,12 @@ TODO
 <summary>
 <para>
 When this construction variable is defined, a versioned shared library
-is created. This modifies the &cv-link-SHLINKFLAGS; as required, adds
-the version number to the library name, and creates the symlinks that
-are needed. &cv-link-SHLIBVERSION; needs to be of the form X.Y.Z,
-where X and Y are numbers, and Z is a number but can also contain
-letters to designate alpha, beta, or release candidate patch levels.
+is created by &b-link-SharedLibrary; builder. This activates the
+&cv-link-_SHLIBVERSIONFLAGS; and thus modifies the &cv-link-SHLINKCOM; as
+required, adds the version number to the library name, and creates the symlinks
+that are needed.  &cv-link-SHLIBVERSION; versions should exist as alpha-numeric,
+decimal-delimited values as defined by the regular expression "\w+[\.\w+]*".
+Example &cv-link-SHLIBVERSION; values include '1', '1.2.3', and '1.2.gitaa412c8b'.
 </para>
 </summary>
 </cvar>
diff --git a/src/engine/SCons/Tool/aixc++.py b/src/engine/SCons/Tool/aixc++.py
index 864fcdf..a3fa102 100644
--- a/src/engine/SCons/Tool/aixc++.py
+++ b/src/engine/SCons/Tool/aixc++.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/aixc++.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/aixc++.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 
diff --git a/src/engine/SCons/Tool/aixcc.py b/src/engine/SCons/Tool/aixcc.py
index 02e0649..8c7d71b 100644
--- a/src/engine/SCons/Tool/aixcc.py
+++ b/src/engine/SCons/Tool/aixcc.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/aixcc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/aixcc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 
diff --git a/src/engine/SCons/Tool/aixf77.py b/src/engine/SCons/Tool/aixf77.py
index 5327cf7..7603a4a 100644
--- a/src/engine/SCons/Tool/aixf77.py
+++ b/src/engine/SCons/Tool/aixf77.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/aixf77.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/aixf77.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 
diff --git a/src/engine/SCons/Tool/aixlink.py b/src/engine/SCons/Tool/aixlink.py
index 7ad9cc6..2e6e652 100644
--- a/src/engine/SCons/Tool/aixlink.py
+++ b/src/engine/SCons/Tool/aixlink.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/aixlink.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/aixlink.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import os.path
diff --git a/src/engine/SCons/Tool/applelink.py b/src/engine/SCons/Tool/applelink.py
index 9ef1b75..e48689c 100644
--- a/src/engine/SCons/Tool/applelink.py
+++ b/src/engine/SCons/Tool/applelink.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/applelink.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/applelink.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Util
 
diff --git a/src/engine/SCons/Tool/ar.py b/src/engine/SCons/Tool/ar.py
index 2d7f7b9..ca0dc24 100644
--- a/src/engine/SCons/Tool/ar.py
+++ b/src/engine/SCons/Tool/ar.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/ar.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/ar.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/src/engine/SCons/Tool/as.py b/src/engine/SCons/Tool/as.py
index 6c7304f..1b122d0 100644
--- a/src/engine/SCons/Tool/as.py
+++ b/src/engine/SCons/Tool/as.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/as.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/as.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/src/engine/SCons/Tool/bcc32.py b/src/engine/SCons/Tool/bcc32.py
index a8295a3..15e2122 100644
--- a/src/engine/SCons/Tool/bcc32.py
+++ b/src/engine/SCons/Tool/bcc32.py
@@ -27,7 +27,7 @@ XXX
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/bcc32.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/bcc32.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import os.path
diff --git a/src/engine/SCons/Tool/c++.py b/src/engine/SCons/Tool/c++.py
index 580bf9c..00630fe 100644
--- a/src/engine/SCons/Tool/c++.py
+++ b/src/engine/SCons/Tool/c++.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/c++.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/c++.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 
diff --git a/src/engine/SCons/Tool/cc.py b/src/engine/SCons/Tool/cc.py
index 7332ad0..c34dad2 100644
--- a/src/engine/SCons/Tool/cc.py
+++ b/src/engine/SCons/Tool/cc.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/cc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/cc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Tool
 import SCons.Defaults
diff --git a/src/engine/SCons/Tool/cvf.py b/src/engine/SCons/Tool/cvf.py
index 89ac9fb..51c137f 100644
--- a/src/engine/SCons/Tool/cvf.py
+++ b/src/engine/SCons/Tool/cvf.py
@@ -27,7 +27,7 @@ Tool-specific initialization for the Compaq Visual Fortran compiler.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/cvf.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/cvf.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import fortran
 
diff --git a/src/engine/SCons/Tool/cyglink.py b/src/engine/SCons/Tool/cyglink.py
index 87716cf..5230910 100644
--- a/src/engine/SCons/Tool/cyglink.py
+++ b/src/engine/SCons/Tool/cyglink.py
@@ -7,19 +7,27 @@ It will usually be imported through the generic SCons.Tool.Tool()
 selection method.
 
 """
+import re
+import os
 
 import SCons.Action
 import SCons.Util
+import SCons.Tool
 
 import gnulink
+import link
 
-def shlib_generator(target, source, env, for_signature):
-    cmd = SCons.Util.CLVar(['$SHLINK']) 
+def _lib_generator(target, source, env, for_signature, **kw):
+    try: cmd = kw['cmd']
+    except KeyError: cmd = SCons.Util.CLVar(['$SHLINK']) 
+
+    try: vp = kw['varprefix']
+    except KeyError: vp = 'SHLIB'
 
-    dll = env.FindIxes(target, 'SHLIBPREFIX', 'SHLIBSUFFIX')
+    dll = env.FindIxes(target, '%sPREFIX' % vp, '%sSUFFIX' % vp)
     if dll: cmd.extend(['-o', dll])
 
-    cmd.extend(['$SHLINKFLAGS', '$__RPATH'])
+    cmd.extend(['$SHLINKFLAGS', '$__%sVERSIONFLAGS' % vp, '$__RPATH'])
 
     implib = env.FindIxes(target, 'IMPLIBPREFIX', 'IMPLIBSUFFIX')
     if implib:
@@ -35,37 +43,141 @@ def shlib_generator(target, source, env, for_signature):
     
     return [cmd]
 
-def shlib_emitter(target, source, env):
-    dll = env.FindIxes(target, 'SHLIBPREFIX', 'SHLIBSUFFIX')
+
+def shlib_generator(target, source, env, for_signature):
+    return _lib_generator(target, source, env, for_signature,
+                          varprefix='SHLIB',
+                          cmd = SCons.Util.CLVar(['$SHLINK']))
+
+def ldmod_generator(target, source, env, for_signature):
+    return _lib_generator(target, source, env, for_signature,
+                          varprefix='LDMODULE',
+                          cmd = SCons.Util.CLVar(['$LDMODULE']))
+
+def _lib_emitter(target, source, env, **kw):
+    Verbose = False
+
+    if Verbose:
+        print "_lib_emitter: target[0]=%r" % target[0].get_path()
+
+    try: vp = kw['varprefix']
+    except KeyError: vp = 'SHLIB'
+
+    try: libtype = kw['libtype']
+    except KeyError: libtype = 'ShLib'
+        
+    dll = env.FindIxes(target, '%sPREFIX' % vp, '%sSUFFIX' % vp)
     no_import_lib = env.get('no_import_lib', 0)
 
+    if Verbose:
+        print "_lib_emitter: dll=%r" % dll.get_path()
+
     if not dll or len(target) > 1:
-        raise SCons.Errors.UserError("A shared library should have exactly one target with the suffix: %s" % env.subst("$SHLIBSUFFIX"))
+        raise SCons.Errors.UserError("A shared library should have exactly one target with the suffix: %s" % env.subst("$%sSUFFIX" % vp))
     
     # Remove any "lib" after the prefix
-    pre = env.subst('$SHLIBPREFIX')
+    pre = env.subst('$%sPREFIX' % vp)
     if dll.name[len(pre):len(pre)+3] == 'lib':
         dll.name = pre + dll.name[len(pre)+3:]
 
+    if Verbose:
+        print "_lib_emitter: dll.name=%r" % dll.name
+
     orig_target = target
     target = [env.fs.File(dll)]
     target[0].attributes.shared = 1
 
+    if Verbose:
+        print "_lib_emitter: after target=[env.fs.File(dll)]: target[0]=%r" % target[0].get_path()
+
     # Append an import lib target
     if not no_import_lib:
         # Create list of target libraries as strings
         target_strings = env.ReplaceIxes(orig_target[0],
-                                         'SHLIBPREFIX', 'SHLIBSUFFIX',
+                                         '%sPREFIX' % vp, '%sSUFFIX' % vp,
                                          'IMPLIBPREFIX', 'IMPLIBSUFFIX')
+        if Verbose:
+            print "_lib_emitter: target_strings=%r" % target_strings
         
         implib_target = env.fs.File(target_strings)
+        if Verbose:
+            print "_lib_emitter: implib_target=%r" % implib_target.get_path()
         implib_target.attributes.shared = 1
         target.append(implib_target)
 
+    symlinks = SCons.Tool.ImpLibSymlinkGenerator(env, implib_target,
+                                                 implib_libtype=libtype,
+                                                 generator_libtype=libtype+'ImpLib')
+    if Verbose:
+        print "_lib_emitter: implib symlinks=%r" % SCons.Tool.StringizeLibSymlinks(symlinks)
+    if symlinks:
+        SCons.Tool.EmitLibSymlinks(env, symlinks, implib_target, clean_targets = target[0])
+        implib_target.attributes.shliblinks = symlinks
+
     return (target, source)
+
+def shlib_emitter(target, source, env):
+    return _lib_emitter(target, source, env, varprefix='SHLIB', libtype='ShLib')
+
+def ldmod_emitter(target, source, env):
+    return _lib_emitter(target, source, env, varprefix='LDMODULE', libtype='LdMod')
                          
+def _versioned_lib_suffix(env, suffix, version):
+    """Generate versioned shared library suffix from a unversioned one.
+       If suffix='.dll', and version='0.1.2', then it returns '-0-1-2.dll'"""
+    Verbose = False
+    if Verbose:
+        print "_versioned_lib_suffix: suffix= ", suffix
+        print "_versioned_lib_suffix: version= ", version
+    cygversion = re.sub('\.', '-', version)
+    if not suffix.startswith('-' + cygversion):
+        suffix = '-' + cygversion + suffix
+    if Verbose:
+        print "_versioned_lib_suffix: return suffix= ", suffix
+    return suffix
+
+def _versioned_implib_name(env, libnode, version, prefix, suffix, **kw):
+    return link._versioned_lib_name(env, libnode, version, prefix, suffix,
+                                    SCons.Tool.ImpLibPrefixGenerator,
+                                    SCons.Tool.ImpLibSuffixGenerator,
+                                    implib_libtype=kw['libtype'])
+
+def _versioned_implib_symlinks(env, libnode, version, prefix, suffix, **kw):
+    """Generate link names that should be created for a versioned shared lirbrary.
+       Returns a list in the form [ (link, linktarget), ... ]
+    """
+    Verbose = False
+
+    if Verbose:
+        print "_versioned_implib_symlinks: libnode=%r" % libnode.get_path()
+        print "_versioned_implib_symlinks: version=%r" % version
+
+    try: libtype = kw['libtype']
+    except KeyError: libtype = 'ShLib'
+
+
+    linkdir = os.path.dirname(libnode.get_path())
+    if Verbose:
+        print "_versioned_implib_symlinks: linkdir=%r" % linkdir
+
+    name = SCons.Tool.ImpLibNameGenerator(env, libnode,
+                                          implib_libtype=libtype,
+                                          generator_libtype=libtype+'ImpLib')
+    if Verbose:
+        print "_versioned_implib_symlinks: name=%r" % name
+
+    major = version.split('.')[0]
+
+    link0 = env.fs.File(os.path.join(linkdir, name))
+    symlinks = [(link0, libnode)]
+
+    if Verbose:
+        print "_versioned_implib_symlinks: return symlinks=%r" % SCons.Tool.StringizeLibSymlinks(symlinks)
+
+    return symlinks
 
 shlib_action = SCons.Action.Action(shlib_generator, generator=1)
+ldmod_action = SCons.Action.Action(ldmod_generator, generator=1)
 
 def generate(env):
     """Add Builders and construction variables for cyglink to an Environment."""
@@ -74,8 +186,9 @@ def generate(env):
     env['LINKFLAGS']   = SCons.Util.CLVar('-Wl,-no-undefined')
 
     env['SHLINKCOM'] = shlib_action
-    env['LDMODULECOM'] = shlib_action
+    env['LDMODULECOM'] = ldmod_action
     env.Append(SHLIBEMITTER = [shlib_emitter])
+    env.Append(LDMODULEEMITTER = [ldmod_emitter])
 
     env['SHLIBPREFIX']         = 'cyg'
     env['SHLIBSUFFIX']         = '.dll'
@@ -83,6 +196,31 @@ def generate(env):
     env['IMPLIBPREFIX']        = 'lib'
     env['IMPLIBSUFFIX']        = '.dll.a'
 
+    # Variables used by versioned shared libraries
+    env['_SHLIBVERSIONFLAGS']      = '$SHLIBVERSIONFLAGS'
+    env['_LDMODULEVERSIONFLAGS']   = '$LDMODULEVERSIONFLAGS'
+
+    # SHLIBVERSIONFLAGS and LDMODULEVERSIONFLAGS are same as in gnulink...
+
+    # LINKCALLBACKS are NOT inherited from gnulink
+    env['LINKCALLBACKS'] = {
+        'VersionedShLibSuffix'          : _versioned_lib_suffix,
+        'VersionedLdModSuffix'          : _versioned_lib_suffix,
+        'VersionedImpLibSuffix'         : _versioned_lib_suffix,
+        'VersionedShLibName'            : link._versioned_shlib_name,
+        'VersionedLdModName'            : link._versioned_ldmod_name,
+        'VersionedShLibImpLibName'      : lambda *args: _versioned_implib_name(*args, libtype='ShLib'),
+        'VersionedLdModImpLibName'      : lambda *args: _versioned_implib_name(*args, libtype='LdMod'),
+        'VersionedShLibImpLibSymlinks'  : lambda *args: _versioned_implib_symlinks(*args, libtype='ShLib'),
+        'VersionedLdModImpLibSymlinks'  : lambda *args: _versioned_implib_symlinks(*args, libtype='LdMod'),
+    }
+
+    # these variables were set by gnulink but are not used in cyglink
+    try: del env['_SHLIBSONAME']
+    except KeyError: pass
+    try: del env['_LDMODULESONAME']
+    except KeyError: pass
+
 def exists(env):
     return gnulink.exists(env)
 
diff --git a/src/engine/SCons/Tool/cyglink.xml b/src/engine/SCons/Tool/cyglink.xml
new file mode 100644
index 0000000..26b153e
--- /dev/null
+++ b/src/engine/SCons/Tool/cyglink.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+Copyright (c) 2001 - 2015 The SCons Foundation
+
+This file is processed by the bin/SConsDoc.py module.
+See its __doc__ string for a discussion of the format.
+-->
+
+<!DOCTYPE sconsdoc [
+<!ENTITY % scons SYSTEM '../../../../doc/scons.mod'>
+%scons;
+<!ENTITY % builders-mod SYSTEM '../../../../doc/generated/builders.mod'>
+%builders-mod;
+<!ENTITY % functions-mod SYSTEM '../../../../doc/generated/functions.mod'>
+%functions-mod;
+<!ENTITY % tools-mod SYSTEM '../../../../doc/generated/tools.mod'>
+%tools-mod;
+<!ENTITY % variables-mod SYSTEM '../../../../doc/generated/variables.mod'>
+%variables-mod;
+]>
+
+<sconsdoc xmlns="http://www.scons.org/dbxsd/v1.0"
+          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+          xsi:schemaLocation="http://www.scons.org/dbxsd/v1.0 http://www.scons.org/dbxsd/v1.0/scons.xsd">
+
+<tool name="cyglink">
+<summary>
+<para>
+Set construction variables for cygwin linker/loader.
+</para>
+</summary>
+<sets>
+<item>IMPLIBPREFIX</item>
+<item>IMPLIBSUFFIX</item>
+<item>LDMODULEVERSIONFLAGS</item>
+<item>LINKFLAGS</item>
+<item>RPATHPREFIX</item>
+<item>RPATHSUFFIX</item>
+<item>SHLIBPREFIX</item>
+<item>SHLIBSUFFIX</item>
+<item>SHLIBVERSIONFLAGS</item>
+<item>SHLINKCOM</item>
+<item>SHLINKFLAGS</item>
+<item>_LDMODULEVERSIONFLAGS</item>
+<item>_SHLIBVERSIONFLAGS</item>
+</sets>
+</tool>
+
+</sconsdoc>
diff --git a/src/engine/SCons/Tool/default.py b/src/engine/SCons/Tool/default.py
index 35e872c..1021213 100644
--- a/src/engine/SCons/Tool/default.py
+++ b/src/engine/SCons/Tool/default.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/default.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/default.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Tool
 
diff --git a/src/engine/SCons/Tool/dmd.py b/src/engine/SCons/Tool/dmd.py
index 327da15..c556151 100644
--- a/src/engine/SCons/Tool/dmd.py
+++ b/src/engine/SCons/Tool/dmd.py
@@ -58,7 +58,7 @@ Lib tool variables:
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/dmd.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/dmd.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import subprocess
@@ -114,7 +114,7 @@ def generate(env):
 
     env['DSHLINK'] = '$DC'
     env['DSHLINKFLAGS'] = SCons.Util.CLVar('$DLINKFLAGS -shared -defaultlib=libphobos2.so')
-    env['SHDLINKCOM'] = '$DLINK -of$TARGET $DSHLINKFLAGS $__DRPATH $SOURCES $_DLIBDIRFLAGS $_DLIBFLAGS'
+    env['SHDLINKCOM'] = '$DLINK -of$TARGET $DSHLINKFLAGS $__DSHLIBVERSIONFLAGS $__DRPATH $SOURCES $_DLIBDIRFLAGS $_DLIBFLAGS'
 
     env['DLIBLINKPREFIX'] = '' if env['PLATFORM'] == 'win32' else '-L-l'
     env['DLIBLINKSUFFIX'] = '.lib' if env['PLATFORM'] == 'win32' else ''
@@ -139,6 +139,17 @@ def generate(env):
     env['DRPATHSUFFIX'] = ''
     env['_DRPATH'] = '${_concat(DRPATHPREFIX, RPATH, DRPATHSUFFIX, __env__)}'
 
+    # Support for versioned libraries
+    env['_DSHLIBVERSIONFLAGS'] = '$DSHLIBVERSIONFLAGS -L-soname=$_DSHLIBSONAME'
+    env['_DSHLIBSONAME'] = '${DShLibSonameGenerator(__env__,TARGET)}'
+    # NOTE: this is a quick hack, the soname will only work if there is
+    # c/c++ linker loaded which provides callback for the ShLibSonameGenerator
+    env['DShLibSonameGenerator'] = SCons.Tool.ShLibSonameGenerator
+    # NOTE: this is only for further reference, currently $DSHLIBVERSION does
+    # not work, the user must use $SHLIBVERSION
+    env['DSHLIBVERSION'] = '$SHLIBVERSION'
+    env['DSHLIBVERSIONFLAGS'] = []
+
     SCons.Tool.createStaticLibBuilder(env)
 
 
diff --git a/src/engine/SCons/Tool/dvi.py b/src/engine/SCons/Tool/dvi.py
index aba7168..9ad1bee 100644
--- a/src/engine/SCons/Tool/dvi.py
+++ b/src/engine/SCons/Tool/dvi.py
@@ -27,7 +27,7 @@ Common DVI Builder definition for various other Tool modules that use it.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/dvi.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/dvi.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Builder
 import SCons.Tool
diff --git a/src/engine/SCons/Tool/dvipdf.py b/src/engine/SCons/Tool/dvipdf.py
index 0a6dde7..9af2598 100644
--- a/src/engine/SCons/Tool/dvipdf.py
+++ b/src/engine/SCons/Tool/dvipdf.py
@@ -30,7 +30,7 @@ selection method.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/dvipdf.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/dvipdf.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Action
 import SCons.Defaults
diff --git a/src/engine/SCons/Tool/dvips.py b/src/engine/SCons/Tool/dvips.py
index f72f2fe..59a16f4 100644
--- a/src/engine/SCons/Tool/dvips.py
+++ b/src/engine/SCons/Tool/dvips.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/dvips.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/dvips.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Action
 import SCons.Builder
diff --git a/src/engine/SCons/Tool/f03.py b/src/engine/SCons/Tool/f03.py
index 77165ad..b84850a 100644
--- a/src/engine/SCons/Tool/f03.py
+++ b/src/engine/SCons/Tool/f03.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/f03.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/f03.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/src/engine/SCons/Tool/f08.py b/src/engine/SCons/Tool/f08.py
index 481afc5..83cf24c 100644
--- a/src/engine/SCons/Tool/f08.py
+++ b/src/engine/SCons/Tool/f08.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/f08.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/f08.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/src/engine/SCons/Tool/f77.py b/src/engine/SCons/Tool/f77.py
index 593c517..b6c138a 100644
--- a/src/engine/SCons/Tool/f77.py
+++ b/src/engine/SCons/Tool/f77.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/f77.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/f77.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 import SCons.Scanner.Fortran
diff --git a/src/engine/SCons/Tool/f90.py b/src/engine/SCons/Tool/f90.py
index c4a8df3..059f639 100644
--- a/src/engine/SCons/Tool/f90.py
+++ b/src/engine/SCons/Tool/f90.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/f90.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/f90.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 import SCons.Scanner.Fortran
diff --git a/src/engine/SCons/Tool/f95.py b/src/engine/SCons/Tool/f95.py
index f361e1d..dffbbda 100644
--- a/src/engine/SCons/Tool/f95.py
+++ b/src/engine/SCons/Tool/f95.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/f95.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/f95.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/src/engine/SCons/Tool/filesystem.py b/src/engine/SCons/Tool/filesystem.py
index df57579..c9493e9 100644
--- a/src/engine/SCons/Tool/filesystem.py
+++ b/src/engine/SCons/Tool/filesystem.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/filesystem.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/filesystem.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons
 from SCons.Tool.install import copyFunc
diff --git a/src/engine/SCons/Tool/fortran.py b/src/engine/SCons/Tool/fortran.py
index 7a51321..43635d8 100644
--- a/src/engine/SCons/Tool/fortran.py
+++ b/src/engine/SCons/Tool/fortran.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/fortran.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/fortran.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import re
 
diff --git a/src/engine/SCons/Tool/g++.py b/src/engine/SCons/Tool/g++.py
index 8246862..f1a23f1 100644
--- a/src/engine/SCons/Tool/g++.py
+++ b/src/engine/SCons/Tool/g++.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/g++.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/g++.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 import re
diff --git a/src/engine/SCons/Tool/g77.py b/src/engine/SCons/Tool/g77.py
index e09cf16..3e1af3c 100644
--- a/src/engine/SCons/Tool/g77.py
+++ b/src/engine/SCons/Tool/g77.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/g77.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/g77.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Util
 from SCons.Tool.FortranCommon import add_all_to_env, add_f77_to_env
diff --git a/src/engine/SCons/Tool/gas.py b/src/engine/SCons/Tool/gas.py
index f987b95..373a336 100644
--- a/src/engine/SCons/Tool/gas.py
+++ b/src/engine/SCons/Tool/gas.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/gas.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/gas.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 as_module = __import__('as', globals(), locals(), [])
 
diff --git a/src/engine/SCons/Tool/gcc.py b/src/engine/SCons/Tool/gcc.py
index d2375c6..06aba58 100644
--- a/src/engine/SCons/Tool/gcc.py
+++ b/src/engine/SCons/Tool/gcc.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/gcc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/gcc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import cc
 import os
diff --git a/src/engine/SCons/Tool/gdc.py b/src/engine/SCons/Tool/gdc.py
index 7a67501..e1d2c9c 100644
--- a/src/engine/SCons/Tool/gdc.py
+++ b/src/engine/SCons/Tool/gdc.py
@@ -46,7 +46,7 @@ Lib tool variables:
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/gdc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/gdc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Action
 import SCons.Defaults
@@ -97,7 +97,7 @@ def generate(env):
 
     env['DSHLINK'] = '$DC'
     env['DSHLINKFLAGS'] = SCons.Util.CLVar('$DLINKFLAGS -shared')
-    env['SHDLINKCOM'] = '$DLINK -o $TARGET $DSHLINKFLAGS $__RPATH $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
+    env['SHDLINKCOM'] = '$DLINK -o $TARGET $DSHLINKFLAGS $__DSHLIBVERSIONFLAGS $__RPATH $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
 
     env['DLIB'] = 'lib' if env['PLATFORM'] == 'win32' else 'ar cr'
     env['DLIBCOM'] = '$DLIB $_DLIBFLAGS {0}$TARGET $SOURCES $_DLINKLIBFLAGS'.format('-c ' if env['PLATFORM'] == 'win32' else '')
@@ -115,6 +115,17 @@ def generate(env):
     env['RPATHSUFFIX'] = ''
     env['_RPATH'] = '${_concat(RPATHPREFIX, RPATH, RPATHSUFFIX, __env__)}'
 
+    # Support for versioned libraries
+    env['_DSHLIBVERSIONFLAGS'] = '$DSHLIBVERSIONFLAGS -Wl,-soname=$_DSHLIBSONAME'
+    env['_DSHLIBSONAME'] = '${DShLibSonameGenerator(__env__,TARGET)}'
+    # NOTE: this is a quick hack, the soname will only work if there is
+    # c/c++ linker loaded which provides callback for the ShLibSonameGenerator
+    env['DShLibSonameGenerator'] = SCons.Tool.ShLibSonameGenerator
+    # NOTE: this is only for further reference, currently $DSHLIBVERSION does
+    # not work, the user must use $SHLIBVERSION
+    env['DSHLIBVERSION'] = '$SHLIBVERSION'
+    env['DSHLIBVERSIONFLAGS'] = '$SHLIBVERSIONFLAGS'
+
     SCons.Tool.createStaticLibBuilder(env)
 
 
diff --git a/src/engine/SCons/Tool/gettext.py b/src/engine/SCons/Tool/gettext.py
index e53ebdb..43f88e9 100644
--- a/src/engine/SCons/Tool/gettext.py
+++ b/src/engine/SCons/Tool/gettext.py
@@ -23,7 +23,7 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/gettext.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/gettext.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 #############################################################################
 def generate(env,**kw):
diff --git a/src/engine/SCons/Tool/gettext.xml b/src/engine/SCons/Tool/gettext.xml
index abbbd79..d6d9806 100644
--- a/src/engine/SCons/Tool/gettext.xml
+++ b/src/engine/SCons/Tool/gettext.xml
@@ -27,7 +27,7 @@ See its __doc__ string for a discussion of the format.
 <summary>
 <para>
 This is actually a toolset, which supports internationalization and
-localization of sofware being constructed with SCons. The toolset loads
+localization of software being constructed with SCons. The toolset loads
 following tools:
 </para>
 
diff --git a/src/engine/SCons/Tool/gfortran.py b/src/engine/SCons/Tool/gfortran.py
index 02da302..0538ced 100644
--- a/src/engine/SCons/Tool/gfortran.py
+++ b/src/engine/SCons/Tool/gfortran.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/gfortran.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/gfortran.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Util
 
diff --git a/src/engine/SCons/Tool/gnulink.py b/src/engine/SCons/Tool/gnulink.py
index 81c0130..1093303 100644
--- a/src/engine/SCons/Tool/gnulink.py
+++ b/src/engine/SCons/Tool/gnulink.py
@@ -31,12 +31,17 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/gnulink.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/gnulink.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Util
+import SCons.Tool
+import os
+import sys
+import re
 
 import link
 
+
 def generate(env):
     """Add Builders and construction variables for gnulink to an Environment."""
     link.generate(env)
@@ -49,6 +54,14 @@ def generate(env):
     env['RPATHPREFIX'] = '-Wl,-rpath='
     env['RPATHSUFFIX'] = ''
     env['_RPATH'] = '${_concat(RPATHPREFIX, RPATH, RPATHSUFFIX, __env__)}'
+
+    # OpenBSD doesn't usually use SONAME for libraries
+    use_soname = not sys.platform.startswith('openbsd')
+    link._setup_versioned_lib_variables(env, tool = 'gnulink', use_soname = use_soname)
+    env['LINKCALLBACKS'] = link._versioned_lib_callbacks()
+
+    # For backward-compatiblity with older SCons versions
+    env['SHLIBVERSIONFLAGS'] = SCons.Util.CLVar('-Wl,-Bsymbolic')
     
 def exists(env):
     # TODO: sync with link.smart_link() to choose a linker
diff --git a/src/engine/SCons/Tool/gnulink.xml b/src/engine/SCons/Tool/gnulink.xml
index 331d127..98e18e8 100644
--- a/src/engine/SCons/Tool/gnulink.xml
+++ b/src/engine/SCons/Tool/gnulink.xml
@@ -33,6 +33,10 @@ Set construction variables for GNU linker/loader.
 <item>SHLINKFLAGS</item>
 <item>RPATHPREFIX</item>
 <item>RPATHSUFFIX</item>
+<item>_LDMODULESONAME</item>
+<item>_SHLIBSONAME</item>
+<item>LDMODULEVERSIONFLAGS</item>
+<item>SHLIBVERSIONFLAGS</item>
 </sets>
 </tool>
 
diff --git a/src/engine/SCons/Tool/gs.py b/src/engine/SCons/Tool/gs.py
index 3e2eecc..ddb22e6 100644
--- a/src/engine/SCons/Tool/gs.py
+++ b/src/engine/SCons/Tool/gs.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/gs.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/gs.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Action
 import SCons.Builder
diff --git a/src/engine/SCons/Tool/hpc++.py b/src/engine/SCons/Tool/hpc++.py
index eb23e94..bd2b5f9 100644
--- a/src/engine/SCons/Tool/hpc++.py
+++ b/src/engine/SCons/Tool/hpc++.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/hpc++.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/hpc++.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 
diff --git a/src/engine/SCons/Tool/hpcc.py b/src/engine/SCons/Tool/hpcc.py
index 827460d..19c22d8 100644
--- a/src/engine/SCons/Tool/hpcc.py
+++ b/src/engine/SCons/Tool/hpcc.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/hpcc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/hpcc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Util
 
diff --git a/src/engine/SCons/Tool/hplink.py b/src/engine/SCons/Tool/hplink.py
index e3512a2..931f8cf 100644
--- a/src/engine/SCons/Tool/hplink.py
+++ b/src/engine/SCons/Tool/hplink.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/hplink.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/hplink.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import os.path
diff --git a/src/engine/SCons/Tool/icc.py b/src/engine/SCons/Tool/icc.py
index d6e3663..3e639ad 100644
--- a/src/engine/SCons/Tool/icc.py
+++ b/src/engine/SCons/Tool/icc.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/icc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/icc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import cc
 
diff --git a/src/engine/SCons/Tool/icl.py b/src/engine/SCons/Tool/icl.py
index 88c6881..bee5bcb 100644
--- a/src/engine/SCons/Tool/icl.py
+++ b/src/engine/SCons/Tool/icl.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/icl.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/icl.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Tool.intelc
 
diff --git a/src/engine/SCons/Tool/ifl.py b/src/engine/SCons/Tool/ifl.py
index ef5bdd6..8c287fc 100644
--- a/src/engine/SCons/Tool/ifl.py
+++ b/src/engine/SCons/Tool/ifl.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/ifl.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/ifl.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 from SCons.Scanner.Fortran import FortranScan
diff --git a/src/engine/SCons/Tool/ifort.py b/src/engine/SCons/Tool/ifort.py
index 275c5c8..3400a89 100644
--- a/src/engine/SCons/Tool/ifort.py
+++ b/src/engine/SCons/Tool/ifort.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/ifort.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/ifort.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 from SCons.Scanner.Fortran import FortranScan
diff --git a/src/engine/SCons/Tool/ilink.py b/src/engine/SCons/Tool/ilink.py
index b2c3513..e3828ca 100644
--- a/src/engine/SCons/Tool/ilink.py
+++ b/src/engine/SCons/Tool/ilink.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/ilink.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/ilink.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/src/engine/SCons/Tool/ilink32.py b/src/engine/SCons/Tool/ilink32.py
index a2f1e67..7a63b36 100644
--- a/src/engine/SCons/Tool/ilink32.py
+++ b/src/engine/SCons/Tool/ilink32.py
@@ -27,7 +27,7 @@ XXX
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/ilink32.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/ilink32.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Tool
 import SCons.Tool.bcc32
diff --git a/src/engine/SCons/Tool/install.py b/src/engine/SCons/Tool/install.py
index 0b3642c..9ae78fa 100644
--- a/src/engine/SCons/Tool/install.py
+++ b/src/engine/SCons/Tool/install.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/install.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/install.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import re
@@ -38,6 +38,7 @@ import shutil
 import stat
 
 import SCons.Action
+import SCons.Tool
 from SCons.Util import make_path_relative
 
 #
@@ -141,98 +142,35 @@ def copyFuncVersionedLib(dest, source, env):
         shutil.copy2(source, dest)
         st = os.stat(source)
         os.chmod(dest, stat.S_IMODE(st[stat.ST_MODE]) | stat.S_IWRITE)
-        versionedLibLinks(dest, source, env)
+        installShlibLinks(dest, source, env)
 
     return 0
 
-def versionedLibVersion(dest, source, env):
-    """Check if dest is a version shared library name. Return version, libname, & install_dir if it is."""
+def listShlibLinksToInstall(dest, source, env):
+    install_links = []
+    source = env.arg2nodes(source)
+    dest = env.fs.File(dest)
+    install_dir = dest.get_dir()
+    for src in source:
+        symlinks = getattr(getattr(src,'attributes',None), 'shliblinks', None)
+        if symlinks:
+            for link, linktgt in symlinks:
+                link_base = os.path.basename(link.get_path())
+                linktgt_base  = os.path.basename(linktgt.get_path())
+                install_link = env.fs.File(link_base, install_dir)
+                install_linktgt = env.fs.File(linktgt_base, install_dir)
+                install_links.append((install_link, install_linktgt))
+    return install_links
+
+def installShlibLinks(dest, source, env):
+    """If we are installing a versioned shared library create the required links."""
     Verbose = False
-    platform = env.subst('$PLATFORM')
-    if not (platform == 'posix'  or platform == 'darwin' or platform == 'sunos'):
-        return (None, None, None)
 
-    if (hasattr(source[0], 'attributes') and
-        hasattr(source[0].attributes, 'shlibname')):
-        libname = source[0].attributes.shlibname
-    else:
-        libname = os.path.basename(str(dest))
-    install_dir = os.path.dirname(str(dest))
-    shlib_suffix = env.subst('$SHLIBSUFFIX')
-    # See if the source name is a versioned shared library, get the version number
-    result = False
-    
-    version_re = re.compile("[0-9]+\\.[0-9]+\\.[0-9a-zA-Z]+")
-    version_File = None
-    if platform == 'posix' or platform == 'sunos':
-        # handle unix names
-        versioned_re = re.compile(re.escape(shlib_suffix + '.') + "[0-9]+\\.[0-9]+\\.[0-9a-zA-Z]+")
-        result = versioned_re.findall(libname)
-        if result:
-            version_File = version_re.findall(versioned_re.findall(libname)[-1])[-1]
-    elif platform == 'darwin':
-        # handle OSX names
-        versioned_re = re.compile("\\.[0-9]+\\.[0-9]+\\.[0-9a-zA-Z]+" + re.escape(shlib_suffix) )
-        result = versioned_re.findall(libname)
-        if result:
-            version_File = version_re.findall(versioned_re.findall(libname)[-1])[-1]
-    
+    symlinks = listShlibLinksToInstall(dest, source, env)
     if Verbose:
-        print "install: version_File ", version_File
-    # result is False if we did not find a versioned shared library name, so return and empty list
-    if not result:
-        return (None, libname, install_dir)
-
-    version = None
-    # get version number from the environment
-    try:
-        version = env.subst('$SHLIBVERSION')
-    except KeyError:
-        version = None
-    
-    if version != version_File:
-        #raise SCons.Errors.UserError("SHLIBVERSION '%s' does not match the version # '%s' in the filename" % (version, version_File) )
-        print "SHLIBVERSION '%s' does not match the version # '%s' in the filename, proceeding based on file name" % (version, version_File)
-        version = version_File
-    return (version, libname, install_dir)
-
-def versionedLibLinks(dest, source, env):
-    """If we are installing a versioned shared library create the required links."""
-    Verbose = False
-    linknames = []
-    version, libname, install_dir = versionedLibVersion(dest, source, env)
-
-    if version != None:
-        # libname includes the version number if one was given
-        linknames = SCons.Tool.VersionShLibLinkNames(version,libname,env)
-        if Verbose:
-            print "versionedLibLinks: linknames ",linknames
-        # Here we just need the file name w/o path as the target of the link
-        lib_ver = libname
-        # make symlink of adjacent names in linknames
-        for count in range(len(linknames)):
-            linkname = linknames[count]
-            fulllinkname = os.path.join(install_dir, linkname)
-            if Verbose:
-                print "full link name ",fulllinkname
-            if count > 0:
-                try:
-                    os.remove(lastlinkname)
-                except:
-                    pass
-                os.symlink(os.path.basename(fulllinkname),lastlinkname)
-                if Verbose:
-                    print "versionedLibLinks: made sym link of %s -> %s" % (lastlinkname,os.path.basename(fulllinkname))
-            lastlinkname = fulllinkname
-        # finish chain of sym links with link to the actual library
-        if len(linknames)>0:
-            try:
-                os.remove(lastlinkname)
-            except:
-                pass
-            os.symlink(lib_ver,lastlinkname)
-            if Verbose:
-                print "versionedLibLinks: made sym link of %s -> %s" % (lib_ver,lastlinkname)
+        print 'installShlibLinks: symlinks=%r' % SCons.Tool.StringizeLibSymlinks(symlinks)
+    if symlinks:
+        SCons.Tool.CreateLibSymlinks(env, symlinks)
     return
 
 def installFunc(target, source, env):
@@ -306,22 +244,11 @@ def add_versioned_targets_to_INSTALLED_FILES(target, source, env):
     Verbose = False
     _INSTALLED_FILES.extend(target)
     if Verbose:
-        print "ver lib emitter ",repr(target)
-
-    # see if we have a versioned shared library, if so generate side effects
-    version, libname, install_dir = versionedLibVersion(target[0], source, env)
-    if version != None:
-        # generate list of link names
-        linknames = SCons.Tool.VersionShLibLinkNames(version,libname,env)
-        for linkname in linknames:
-            if Verbose:
-                print "make side effect of %s" % os.path.join(install_dir, linkname)
-            fulllinkname = os.path.join(install_dir, linkname)
-            env.SideEffect(fulllinkname,target[0])
-            env.Clean(target[0],fulllinkname)
-            _INSTALLED_FILES.append(fulllinkname)
-            if Verbose:
-                print "installed list ", _INSTALLED_FILES
+        print "add_versioned_targets_to_INSTALLED_FILES: target=%r" % map(str, target)
+
+    symlinks = listShlibLinksToInstall(target[0], source, env)
+    if symlinks:
+        SCons.Tool.EmitLibSymlinks(env, symlinks, target[0])
         
     _UNIQUE_INSTALLED_FILES = None
     return (target, source)
diff --git a/src/engine/SCons/Tool/install.xml b/src/engine/SCons/Tool/install.xml
index 6473734..85518fa 100644
--- a/src/engine/SCons/Tool/install.xml
+++ b/src/engine/SCons/Tool/install.xml
@@ -82,20 +82,13 @@ env.InstallAs(target = ['../lib/libfoo.a', '../lib/libbar.a'],
 <builder name="InstallVersionedLib">
 <summary>
 <para>
-Installs a versioned shared library. The &cv-link-SHLIBVERSION;
-construction variable should be defined in the environment
-to confirm the version number in the library name.
-If &cv-link-SHLIBVERSION; is not defined a warning will be issued
-and the name of the library will be parsed to derive the version. 
-The symlinks appropriate to the architecture will be generated.
+Installs a versioned shared library. The symlinks appropriate to the
+architecture will be generated based on symlinks of the source library.
 </para>
 
 <example_commands>
 env.InstallVersionedLib(target = '/usr/local/bin/foo',
               source = 'libxyz.1.5.2.so')
-env.InstallVersionedLib(target = '/usr/local/bin/foo',
-              source = 'libxyz.1.5.2.so',
-              SHLIBVERSION='1.5.2')
 </example_commands>
 </summary>
 </builder>
diff --git a/src/engine/SCons/Tool/intelc.py b/src/engine/SCons/Tool/intelc.py
index 256f32e..ebf2534 100644
--- a/src/engine/SCons/Tool/intelc.py
+++ b/src/engine/SCons/Tool/intelc.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 from __future__ import division
 
-__revision__ = "src/engine/SCons/Tool/intelc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/intelc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import math, sys, os.path, glob, string, re
 
diff --git a/src/engine/SCons/Tool/ipkg.py b/src/engine/SCons/Tool/ipkg.py
index bf2b496..b7f1674 100644
--- a/src/engine/SCons/Tool/ipkg.py
+++ b/src/engine/SCons/Tool/ipkg.py
@@ -33,7 +33,7 @@ packages fake_root.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/ipkg.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/ipkg.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 
diff --git a/src/engine/SCons/Tool/jar.py b/src/engine/SCons/Tool/jar.py
index 50d3fc0..8857209 100644
--- a/src/engine/SCons/Tool/jar.py
+++ b/src/engine/SCons/Tool/jar.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/jar.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/jar.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Subst
 import SCons.Util
diff --git a/src/engine/SCons/Tool/javac.py b/src/engine/SCons/Tool/javac.py
index bb57208..bbaa47d 100644
--- a/src/engine/SCons/Tool/javac.py
+++ b/src/engine/SCons/Tool/javac.py
@@ -30,7 +30,7 @@ selection method.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/javac.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/javac.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import os.path
diff --git a/src/engine/SCons/Tool/javah.py b/src/engine/SCons/Tool/javah.py
index 1d667b9..4c20393 100644
--- a/src/engine/SCons/Tool/javah.py
+++ b/src/engine/SCons/Tool/javah.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/javah.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/javah.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 
diff --git a/src/engine/SCons/Tool/latex.py b/src/engine/SCons/Tool/latex.py
index 69413cc..e329d3f 100644
--- a/src/engine/SCons/Tool/latex.py
+++ b/src/engine/SCons/Tool/latex.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/latex.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/latex.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Action
 import SCons.Defaults
diff --git a/src/engine/SCons/Tool/ldc.py b/src/engine/SCons/Tool/ldc.py
index c1b558f..b37f2d7 100644
--- a/src/engine/SCons/Tool/ldc.py
+++ b/src/engine/SCons/Tool/ldc.py
@@ -46,7 +46,7 @@ Lib tool variables:
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/ldc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/ldc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import subprocess
@@ -105,7 +105,7 @@ def generate(env):
     # Hack for Fedora the packages of which use the wrong name :-(
     if os.path.exists('/usr/lib64/libphobos-ldc.so') or  os.path.exists('/usr/lib32/libphobos-ldc.so') or os.path.exists('/usr/lib/libphobos-ldc.so') :
         env['DSHLINKFLAGS'] = SCons.Util.CLVar('$DLINKFLAGS -shared -defaultlib=phobos-ldc')
-    env['SHDLINKCOM'] = '$DLINK -of=$TARGET $DSHLINKFLAGS $__DRPATH $SOURCES $_DLIBDIRFLAGS $_DLIBFLAGS'
+    env['SHDLINKCOM'] = '$DLINK -of=$TARGET $DSHLINKFLAGS $__DSHLIBVERSIONFLAGS $__DRPATH $SOURCES $_DLIBDIRFLAGS $_DLIBFLAGS'
 
     env['DLIBLINKPREFIX'] = '' if env['PLATFORM'] == 'win32' else '-L-l'
     env['DLIBLINKSUFFIX'] = '.lib' if env['PLATFORM'] == 'win32' else ''
@@ -131,6 +131,17 @@ def generate(env):
     env['DRPATHSUFFIX'] = ''
     env['_DRPATH'] = '${_concat(DRPATHPREFIX, RPATH, DRPATHSUFFIX, __env__)}'
 
+    # Support for versioned libraries
+    env['_DSHLIBVERSIONFLAGS'] = '$DSHLIBVERSIONFLAGS -L-soname=$_DSHLIBSONAME'
+    env['_DSHLIBSONAME'] = '${DShLibSonameGenerator(__env__,TARGET)}'
+    # NOTE: this is a quick hack, the soname will only work if there is
+    # c/c++ linker loaded which provides callback for the ShLibSonameGenerator
+    env['DShLibSonameGenerator'] = SCons.Tool.ShLibSonameGenerator
+    # NOTE: this is only for further reference, currently $DSHLIBVERSION does
+    # not work, the user must use $SHLIBVERSION
+    env['DSHLIBVERSION'] = '$SHLIBVERSION'
+    env['DSHLIBVERSIONFLAGS'] = []
+
     SCons.Tool.createStaticLibBuilder(env)
 
 
diff --git a/src/engine/SCons/Tool/lex.py b/src/engine/SCons/Tool/lex.py
index 9f6557d..9baecb5 100644
--- a/src/engine/SCons/Tool/lex.py
+++ b/src/engine/SCons/Tool/lex.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/lex.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/lex.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 
diff --git a/src/engine/SCons/Tool/link.py b/src/engine/SCons/Tool/link.py
index 6874301..08dce99 100644
--- a/src/engine/SCons/Tool/link.py
+++ b/src/engine/SCons/Tool/link.py
@@ -31,11 +31,12 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/link.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/link.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
+import sys
 import re
+import os
 
-import SCons.Defaults
 import SCons.Tool
 import SCons.Util
 import SCons.Warnings
@@ -72,97 +73,205 @@ def smart_link(source, target, env, for_signature):
         return '$CXX'
     return '$CC'
 
-def shlib_emitter(target, source, env):
+def _lib_emitter(target, source, env, **kw):
     Verbose = False
-    platform = env.subst('$PLATFORM')
+    if Verbose:
+        print "_lib_emitter: target[0]=%r" % target[0].get_path()
     for tgt in target:
         tgt.attributes.shared = 1
+    
     try:
-        # target[0] comes in as libtest.so. Add the version extensions
-        version = env.subst('$SHLIBVERSION')
-        if version:
-            version_names = shlib_emitter_names(target, source, env)
-            # mark the target with the shared libraries name, including
-            # the version number
-            target[0].attributes.shlibname = version_names[0]
-            shlib = env.File(version_names[0], directory=target[0].get_dir())
-            target[0].attributes.shlibpath = shlib.get_internal_path()
-            for name in version_names[1:]:
-                env.SideEffect(name, shlib)
-                env.Clean(shlib, name)
-                if Verbose:
-                    print "shlib_emitter: add side effect - ",name
-            env.Clean(shlib, target[0])
-            return ([shlib], source)
+        symlink_generator = kw['symlink_generator']
     except KeyError:
-        version = None
+        pass
+    else:
+        if Verbose:
+            print "_lib_emitter: symlink_generator=%r" % symlink_generator
+        symlinks = symlink_generator(env, target[0])
+        if Verbose:
+            print "_lib_emitter: symlinks=%r" % symlinks 
+
+        if symlinks:
+            SCons.Tool.EmitLibSymlinks(env, symlinks, target[0])
+            target[0].attributes.shliblinks = symlinks
     return (target, source)
 
-def shlib_emitter_names(target, source, env):
-    """Return list of file names that are side effects for a versioned library build. The first name in the list is the new name for the target"""
+def shlib_emitter(target, source, env):
+    return _lib_emitter(target, source, env, symlink_generator = SCons.Tool.ShLibSymlinkGenerator)
+
+def ldmod_emitter(target, source, env):
+    return _lib_emitter(target, source, env, symlink_generator = SCons.Tool.LdModSymlinkGenerator)
+
+# This is generic enough to be included here...
+def _versioned_lib_name(env, libnode, version, prefix, suffix, prefix_generator, suffix_generator, **kw):
+    """For libnode='/optional/dir/libfoo.so.X.Y.Z' it returns 'libfoo.so'"""
     Verbose = False
-    platform = env.subst('$PLATFORM')
-    version_names = []
-    try:
-        # target[0] comes in as libtest.so. Add the version extensions
-        version = env.subst('$SHLIBVERSION')
-        if version.count(".") != 2:
-            # We need a version of the form x.y.z to proceed
-            raise ValueError
-        if version:
-            if platform == 'posix' or platform == 'sunos':
-                versionparts = version.split('.')
-                if hasattr(target[0].attributes, 'shlibname'):
-                    name = target[0].attributes.shlibname
-                else:
-                    name = target[0].name
-                # generate library name with the version number
-                version_name = name + '.' + version
-                if Verbose:
-                    print "shlib_emitter_names: target is ", version_name
-                    print "shlib_emitter_names: side effect: ", name
-                # add version_name to list of names to be a Side effect
-                version_names.append(version_name)
-                if Verbose:
-                    print "shlib_emitter_names: versionparts ",versionparts
-                for ver in versionparts[0:-1]:
-                    name = name + '.' + ver
-                    if Verbose:
-                        print "shlib_emitter_names: side effect: ", name
-                    # add name to list of names to be a Side effect
-                    version_names.append(name)
-            elif platform == 'darwin':
-                shlib_suffix = env.subst('$SHLIBSUFFIX')
-                if hasattr(target[0].attributes, 'shlibname'):
-                    name = target[0].attributes.shlibname
-                else:
-                    name = target[0].name
-                # generate library name with the version number
-                suffix_re = re.escape(shlib_suffix)
-                version_name = re.sub(suffix_re, '.' + version + shlib_suffix, name)
-                if Verbose:
-                    print "shlib_emitter_names: target is ", version_name
-                    print "shlib_emitter_names: side effect: ", name
-                # add version_name to list of names to be a Side effect
-                version_names.append(version_name)
-            elif platform == 'cygwin':
-                shlib_suffix = env.subst('$SHLIBSUFFIX')
-                if hasattr(target[0].attributes, 'shlibname'):
-                    name = target[0].attributes.shlibname
-                else:
-                    name = target[0].name
-                # generate library name with the version number
-                suffix_re = re.escape(shlib_suffix)
-                version_name = re.sub(suffix_re, '-' + re.sub('\.', '-', version) + shlib_suffix, name)
-                if Verbose:
-                    print "shlib_emitter_names: target is ", version_name
-                    print "shlib_emitter_names: side effect: ", name
-                # add version_name to list of names to be a Side effect
-                version_names.append(version_name)
 
-    except KeyError:
-        version = None
-    return version_names
+    if Verbose:
+        print "_versioned_lib_name: libnode=%r" % libnode.get_path()
+        print "_versioned_lib_name: version=%r" % version
+        print "_versioned_lib_name: prefix=%r" % prefix
+        print "_versioned_lib_name: suffix=%r" % suffix
+        print "_versioned_lib_name: suffix_generator=%r" % suffix_generator
+
+    versioned_name = os.path.basename(libnode.get_path())
+    if Verbose:
+        print "_versioned_lib_name: versioned_name=%r" % versioned_name
+
+    versioned_prefix = prefix_generator(env, **kw)
+    versioned_suffix = suffix_generator(env, **kw)
+    if Verbose:
+        print "_versioned_lib_name: versioned_prefix=%r" % versioned_prefix
+        print "_versioned_lib_name: versioned_suffix=%r" % versioned_suffix
+
+    versioned_prefix_re = '^' + re.escape(versioned_prefix)
+    versioned_suffix_re = re.escape(versioned_suffix) + '$'
+    name = re.sub(versioned_prefix_re, prefix, versioned_name)
+    name = re.sub(versioned_suffix_re, suffix, name)
+    if Verbose:
+        print "_versioned_lib_name: name=%r" % name
+    return name
+
+def _versioned_shlib_name(env, libnode, version, prefix, suffix, **kw):
+    pg = SCons.Tool.ShLibPrefixGenerator
+    sg = SCons.Tool.ShLibSuffixGenerator
+    return _versioned_lib_name(env, libnode, version, prefix, suffix, pg, sg, **kw)
+
+def _versioned_ldmod_name(env, libnode, version, prefix, suffix, **kw):
+    pg = SCons.Tool.LdModPrefixGenerator
+    sg = SCons.Tool.LdModSuffixGenerator
+    return _versioned_lib_name(env, libnode, version, prefix, suffix, pg, sg, **kw)
+
+def _versioned_lib_suffix(env, suffix, version):
+    """For suffix='.so' and version='0.1.2' it returns '.so.0.1.2'"""
+    Verbose = False
+    if Verbose:
+        print "_versioned_lib_suffix: suffix=%r" % suffix
+        print "_versioned_lib_suffix: version=%r" % version
+    if not suffix.endswith(version):
+        suffix = suffix + '.' + version
+    if Verbose:
+        print "_versioned_lib_suffix: return suffix=%r" % suffix
+    return suffix
+
+def _versioned_lib_soname(env, libnode, version, prefix, suffix, name_func):
+    """For libnode='/optional/dir/libfoo.so.X.Y.Z' it returns 'libfoo.so.X'"""
+    Verbose = False
+    if Verbose:
+        print "_versioned_lib_soname: version=%r" % version
+    name = name_func(env, libnode, version, prefix, suffix)
+    if Verbose:
+        print "_versioned_lib_soname: name=%r" % name
+    major = version.split('.')[0]
+    soname = name + '.' + major
+    if Verbose:
+        print "_versioned_lib_soname: soname=%r" % soname
+    return soname
+
+def _versioned_shlib_soname(env, libnode, version, prefix, suffix):
+    return _versioned_lib_soname(env, libnode, version, prefix, suffix, _versioned_shlib_name) 
+
+def _versioned_ldmod_soname(env, libnode, version, prefix, suffix):
+    return _versioned_lib_soname(env, libnode, version, prefix, suffix, _versioned_ldmod_name) 
+
+def _versioned_lib_symlinks(env, libnode, version, prefix, suffix, name_func, soname_func):
+    """Generate link names that should be created for a versioned shared lirbrary.
+       Returns a dictionary in the form { linkname : linktarget }
+    """
+    Verbose = False
+
+    if Verbose:
+        print "_versioned_lib_symlinks: libnode=%r" % libnode.get_path()
+        print "_versioned_lib_symlinks: version=%r" % version
+
+    if sys.platform.startswith('openbsd'):
+        # OpenBSD uses x.y shared library versioning numbering convention
+        # and doesn't use symlinks to backwards-compatible libraries
+        if Verbose:
+            print "_versioned_lib_symlinks: return symlinks=%r" % None
+        return None
+
+    linkdir = libnode.get_dir()
+    if Verbose:
+        print "_versioned_lib_symlinks: linkdir=%r" % linkdir.get_path()
+
+    name = name_func(env, libnode, version, prefix, suffix)
+    if Verbose:
+        print "_versioned_lib_symlinks: name=%r" % name
+
+    soname = soname_func(env, libnode, version, prefix, suffix)
+
+    link0 = env.fs.File(soname, linkdir)
+    link1 = env.fs.File(name, linkdir)
+
+    # We create direct symlinks, not daisy-chained.
+    if link0 == libnode:
+        # This enables SHLIBVERSION without periods (e.g. SHLIBVERSION=1)
+        symlinks = [ (link1, libnode) ]
+    else:
+        # This handles usual SHLIBVERSION, i.e. '1.2', '1.2.3', etc.
+        symlinks = [ (link0, libnode), (link1, libnode) ]
+
+    if Verbose:
+        print "_versioned_lib_symlinks: return symlinks=%r" % SCons.Tool.StringizeLibSymlinks(symlinks)
+
+    return symlinks
+
+def _versioned_shlib_symlinks(env, libnode, version, prefix, suffix):
+    nf = _versioned_shlib_name
+    sf = _versioned_shlib_soname
+    return _versioned_lib_symlinks(env, libnode, version, prefix, suffix, nf, sf)
+
+def _versioned_ldmod_symlinks(env, libnode, version, prefix, suffix):
+    nf = _versioned_ldmod_name
+    sf = _versioned_ldmod_soname
+    return _versioned_lib_symlinks(env, libnode, version, prefix, suffix, nf, sf)
+
+def _versioned_lib_callbacks():
+    return {
+        'VersionedShLibSuffix'   : _versioned_lib_suffix,
+        'VersionedLdModSuffix'   : _versioned_lib_suffix,
+        'VersionedShLibSymlinks' : _versioned_shlib_symlinks,
+        'VersionedLdModSymlinks' : _versioned_ldmod_symlinks,
+        'VersionedShLibName'     : _versioned_shlib_name,
+        'VersionedLdModName'     : _versioned_ldmod_name,
+        'VersionedShLibSoname'   : _versioned_shlib_soname,
+        'VersionedLdModSoname'   : _versioned_ldmod_soname,
+    }.copy()
+
+# Setup all variables required by the versioning machinery
+def _setup_versioned_lib_variables(env, **kw):
+
+    tool = None
+    try: tool = kw['tool']
+    except KeyError: pass
+
+    use_soname = False
+    try: use_soname = kw['use_soname'] 
+    except KeyError: pass
+
+    # The $_SHLIBVERSIONFLAGS define extra commandline flags used when
+    # building VERSIONED shared libraries. It's always set, but used only
+    # when VERSIONED library is built (see __SHLIBVERSIONFLAGS in SCons/Defaults.py).
+    if use_soname:
+        # If the linker uses SONAME, then we need this little automata
+        if tool == 'sunlink':
+            env['_SHLIBVERSIONFLAGS'] = '$SHLIBVERSIONFLAGS -h $_SHLIBSONAME'
+            env['_LDMODULEVERSIONFLAGS'] = '$LDMODULEVERSIONFLAGS -h $_LDMODULESONAME'
+        else:
+            env['_SHLIBVERSIONFLAGS'] = '$SHLIBVERSIONFLAGS -Wl,-soname=$_SHLIBSONAME'
+            env['_LDMODULEVERSIONFLAGS'] = '$LDMODULEVERSIONFLAGS -Wl,-soname=$_LDMODULESONAME'
+        env['_SHLIBSONAME'] = '${ShLibSonameGenerator(__env__,TARGET)}'
+        env['_LDMODULESONAME'] = '${LdModSonameGenerator(__env__,TARGET)}'
+        env['ShLibSonameGenerator'] = SCons.Tool.ShLibSonameGenerator
+        env['LdModSonameGenerator'] = SCons.Tool.LdModSonameGenerator
+    else:
+        env['_SHLIBVERSIONFLAGS'] = '$SHLIBVERSIONFLAGS'
+        env['_LDMODULEVERSIONFLAGS'] = '$LDMODULEVERSIONFLAGS'
+
+    # LDOMDULVERSIONFLAGS should always default to $SHLIBVERSIONFLAGS
+    env['LDMODULEVERSIONFLAGS'] = '$SHLIBVERSIONFLAGS'
+
 
 def generate(env):
     """Add Builders and construction variables for gnulink to an Environment."""
@@ -171,7 +280,7 @@ def generate(env):
 
     env['SHLINK']      = '$LINK'
     env['SHLINKFLAGS'] = SCons.Util.CLVar('$LINKFLAGS -shared')
-    env['SHLINKCOM']   = '$SHLINK -o $TARGET $SHLINKFLAGS $__RPATH $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
+    env['SHLINKCOM']   = '$SHLINK -o $TARGET $SHLINKFLAGS $__SHLIBVERSIONFLAGS $__RPATH $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
     # don't set up the emitter, cause AppendUnique will generate a list
     # starting with None :-(
     env.Append(SHLIBEMITTER = [shlib_emitter])
@@ -196,15 +305,13 @@ def generate(env):
     # setting them the same means that LoadableModule works everywhere.
     SCons.Tool.createLoadableModuleBuilder(env)
     env['LDMODULE'] = '$SHLINK'
-    # don't set up the emitter, cause AppendUnique will generate a list
-    # starting with None :-(
-    env.Append(LDMODULEEMITTER='$SHLIBEMITTER')
+    env.Append(LDMODULEEMITTER = [ldmod_emitter])
     env['LDMODULEPREFIX'] = '$SHLIBPREFIX'
     env['LDMODULESUFFIX'] = '$SHLIBSUFFIX'
     env['LDMODULEFLAGS'] = '$SHLINKFLAGS'
-    env['LDMODULECOM'] = '$LDMODULE -o $TARGET $LDMODULEFLAGS $__RPATH $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
-
-
+    env['LDMODULECOM'] = '$LDMODULE -o $TARGET $LDMODULEFLAGS $__LDMODULEVERSIONFLAGS $__RPATH $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
+    env['LDMODULEVERSION'] = '$SHLIBVERSION'
+    env['LDMODULENOVERSIONSYMLINKS'] = '$SHLIBNOVERSIONSYMLINKS'
 
 def exists(env):
     # This module isn't really a Tool on its own, it's common logic for
diff --git a/src/engine/SCons/Tool/link.xml b/src/engine/SCons/Tool/link.xml
index cd38a46..0d477eb 100644
--- a/src/engine/SCons/Tool/link.xml
+++ b/src/engine/SCons/Tool/link.xml
@@ -41,11 +41,16 @@ Sets construction variables for generic POSIX linkers.
 <item>LIBLINKPREFIX</item>
 <item>LIBLINKSUFFIX</item>
 <item>SHLIBSUFFIX</item>
+<item>__SHLIBVERSIONFLAGS</item>
 <item>LDMODULE</item>
 <item>LDMODULEPREFIX</item>
 <item>LDMODULESUFFIX</item>
 <item>LDMODULEFLAGS</item>
 <item>LDMODULECOM</item>
+<item>LDMODULEVERSION</item>
+<item>LDMODULENOVERSIONSYMLINKS</item>
+<item>LDMODULEVERSIONFLAGS</item>
+<item>__LDMODULEVERSIONFLAGS</item>
 </sets>
 <uses>
 <item>SHLINKCOMSTR</item>
@@ -54,6 +59,105 @@ Sets construction variables for generic POSIX linkers.
 </uses>
 </tool>
 
+<cvar name="__LDMODULEVERSIONFLAGS">
+<summary>
+<para>
+This construction variable automatically introduces &cv-link-_LDMODULEVERSIONFLAGS;
+if &cv-link-LDMODULEVERSION; is set. Othervise it evaluates to an empty string.
+</para>
+</summary>
+</cvar>
+
+<cvar name="__SHLIBVERSIONFLAGS">
+<summary>
+<para>
+This construction variable automatically introduces &cv-link-_SHLIBVERSIONFLAGS;
+if &cv-link-SHLIBVERSION; is set. Othervise it evaluates to an empty string.
+</para>
+</summary>
+</cvar>
+
+<cvar name="_LDMODULESONAME">
+<summary>
+<para>
+A macro that automatically generates loadable module's SONAME based on $TARGET,
+$LDMODULEVERSION and $LDMODULESUFFIX. Used by &b-link-LoadableModule; builder
+when the linker tool supports SONAME (e.g. &t-link-gnulink;).
+</para>
+</summary>
+</cvar>
+
+<cvar name="_LDMODULEVERSIONFLAGS">
+<summary>
+<para>
+This macro automatically introduces extra flags to &cv-link-LDMODULECOM; when
+building versioned &b-link-LoadableModule; (that is when
+&cv-link-LDMODULEVERSION; is set). <literal>_LDMODULEVERSIONFLAGS</literal>
+usually adds &cv-link-SHLIBVERSIONFLAGS; and some extra dynamically generated
+options (such as <literal>-Wl,-soname=$_LDMODULESONAME</literal>).  It is unused
+by plain (unversioned) loadable modules.
+</para>
+</summary>
+</cvar>
+
+<cvar name="_SHLIBVERSIONFLAGS">
+<summary>
+<para>
+This macro automatically introduces extra flags to &cv-link-SHLINKCOM; when
+building versioned &b-link-SharedLibrary; (that is when &cv-link-SHLIBVERSION;
+is set). <literal>_SHLIBVERSIONFLAGS</literal> usually adds &cv-link-SHLIBVERSIONFLAGS;
+and some extra dynamically generated options (such as
+<literal>-Wl,-soname=$_SHLIBSONAME</literal>. It is unused by "plain"
+(unversioned) shared libraries.
+</para>
+</summary>
+</cvar>
+
+<cvar name="_SHLIBSONAME">
+<summary>
+<para>
+A macro that automatically generates shared library's SONAME based on $TARGET,
+$SHLIBVERSION and $SHLIBSUFFIX. Used by &b-link-SharedLibrary; builder when
+the linker tool supports SONAME (e.g. &t-link-gnulink;).
+</para>
+</summary>
+</cvar>
+
+<cvar name="IMPLIBPREFIX">
+<summary>
+<para>
+The prefix used for import library names. For example, cygwin uses import
+libraries (<literal>libfoo.dll.a</literal>) in pair with dynamic libraries
+(<literal>cygfoo.dll</literal>). The &t-link-cyglink; linker sets
+&cv-link-IMPLIBPREFIX; to <literal>'lib'</literal> and &cv-link-SHLIBPREFIX;
+to <literal>'cyg'</literal>.
+</para>
+</summary>
+</cvar>
+
+<cvar name="IMPLIBSUFFIX">
+<summary>
+<para>
+The suffix used for import library names. For example, cygwin uses import
+libraries (<literal>libfoo.dll.a</literal>) in pair with dynamic libraries
+(<literal>cygfoo.dll</literal>). The &t-link-cyglink; linker sets
+&cv-link-IMPLIBSUFFIX; to <literal>'.dll.a'</literal> and &cv-link-SHLIBSUFFIX;
+to <literal>'.dll'</literal>.
+</para>
+</summary>
+</cvar>
+
+<cvar name="IMPLIBNOVERSIONSYMLINKS">
+<summary>
+<para>
+Used to override &cv-link-SHLIBNOVERSIONSYMLINKS;/&cv-link-LDMODULENOVERSIONSYMLINKS; when 
+creating versioned import library for a shared library/loadable module. If not defined,
+then &cv-link-SHLIBNOVERSIONSYMLINKS;/&cv-link-LDMODULENOVERSIONSYMLINKS; is used to determine
+whether to disable symlink generation or not.
+</para>
+</summary>
+</cvar>
+
 <cvar name="LDMODULE">
 <summary>
 <para>
@@ -92,6 +196,15 @@ General user options passed to the linker for building loadable modules.
 </summary>
 </cvar>
 
+<cvar name="LDMODULENOVERSIONSYMLINKS">
+<summary>
+<para>
+Instructs the &b-link-LoadableModule; builder to not automatically create symlinks
+for versioned modules. Defaults to <literal>$SHLIBNOVERSIONSYMLINKS</literal>
+</para>
+</summary>
+</cvar>
+
 <cvar name="LDMODULEPREFIX">
 <summary>
 <para>
@@ -114,6 +227,16 @@ the same as $SHLIBSUFFIX.
 </summary>
 </cvar>
 
+<cvar name="LDMODULEVERSIONFLAGS">
+<summary>
+<para>
+Extra flags added to &cv-link-LDMODULECOM; when building versioned
+&b-link-LoadableModule;. These flags are only used when &cv-link-LDMODULEVERSION; is
+set.
+</para>
+</summary>
+</cvar>
+
 <cvar name="LINK">
 <summary>
 <para>
@@ -169,6 +292,25 @@ for the variable that expands to library search path options.
 </summary>
 </cvar>
 
+<cvar name="SHLIBNOVERSIONSYMLINKS">
+<summary>
+<para>
+Instructs the &b-link-SharedLibrary; builder to not create symlinks for versioned
+shared libraries.
+</para>
+</summary>
+</cvar>
+
+<cvar name="SHLIBVERSIONFLAGS">
+<summary>
+<para>
+Extra flags added to &cv-link-SHLINKCOM; when building versioned
+&b-link-SharedLibrary;. These flags are only used when &cv-link-SHLIBVERSION; is
+set.
+</para>
+</summary>
+</cvar>
+
 <cvar name="SHLINK">
 <summary>
 <para>
@@ -223,6 +365,18 @@ for the variable that expands to library search path options.
 </summary>
 </cvar>
 
+<cvar name="SONAME">
+<summary>
+<para>
+Variable used to hard-code SONAME for versioned shared library/loadable module.
+<example_commands>
+env.SharedLibrary('test', 'test.c', SHLIBVERSION='0.1.2', SONAME='libtest.so.2')
+</example_commands>
+The variable is used, for example, by &t-link-gnulink; linker tool.
+</para>
+</summary>
+</cvar>
+
 <cvar name="STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME">
   <summary>
     <para>
diff --git a/src/engine/SCons/Tool/linkloc.py b/src/engine/SCons/Tool/linkloc.py
index d2c218f..a8415b8 100644
--- a/src/engine/SCons/Tool/linkloc.py
+++ b/src/engine/SCons/Tool/linkloc.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/linkloc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/linkloc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 import re
@@ -86,6 +86,7 @@ def generate(env):
     env['SHLINKFLAGS'] = SCons.Util.CLVar('$LINKFLAGS')
     env['SHLINKCOM']   = '${SUBST_CMD_FILE("$SHLINK $SHLINKFLAGS $_LIBDIRFLAGS $_LIBFLAGS -dll $TARGET $SOURCES")}'
     env['SHLIBEMITTER']= None
+    env['LDMODULEEMITTER']= None
     env['LINK']        = "linkloc"
     env['LINKFLAGS']   = SCons.Util.CLVar('')
     env['LINKCOM']     = '${SUBST_CMD_FILE("$LINK $LINKFLAGS $_LIBDIRFLAGS $_LIBFLAGS -exe $TARGET $SOURCES")}'
diff --git a/src/engine/SCons/Tool/m4.py b/src/engine/SCons/Tool/m4.py
index dfc4665..de9c3f6 100644
--- a/src/engine/SCons/Tool/m4.py
+++ b/src/engine/SCons/Tool/m4.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/m4.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/m4.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Action
 import SCons.Builder
diff --git a/src/engine/SCons/Tool/masm.py b/src/engine/SCons/Tool/masm.py
index 7036de6..3e00d33 100644
--- a/src/engine/SCons/Tool/masm.py
+++ b/src/engine/SCons/Tool/masm.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/masm.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/masm.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/src/engine/SCons/Tool/midl.py b/src/engine/SCons/Tool/midl.py
index 0d93073..a46c1eb 100644
--- a/src/engine/SCons/Tool/midl.py
+++ b/src/engine/SCons/Tool/midl.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/midl.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/midl.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Action
 import SCons.Builder
diff --git a/src/engine/SCons/Tool/midl.xml b/src/engine/SCons/Tool/midl.xml
index 8057683..f5b77e7 100644
--- a/src/engine/SCons/Tool/midl.xml
+++ b/src/engine/SCons/Tool/midl.xml
@@ -44,7 +44,7 @@ Sets construction variables for the Microsoft IDL compiler.
 <para>
 Builds a Windows type library (<filename>.tlb</filename>)
 file from an input IDL file (<filename>.idl</filename>).
-In addition, it will build the associated inteface stub and
+In addition, it will build the associated interface stub and
 proxy source files,
 naming them according to the base name of the <filename>.idl</filename> file.
 For example,
diff --git a/src/engine/SCons/Tool/mingw.py b/src/engine/SCons/Tool/mingw.py
index 236ce32..0afd559 100644
--- a/src/engine/SCons/Tool/mingw.py
+++ b/src/engine/SCons/Tool/mingw.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/mingw.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/mingw.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import os.path
@@ -146,6 +146,7 @@ def generate(env):
     env['SHLINKCOM']   = shlib_action
     env['LDMODULECOM'] = shlib_action
     env.Append(SHLIBEMITTER = [shlib_emitter])
+    env.Append(LDMODULEEMITTER = [shlib_emitter])
     env['AS'] = 'as'
 
     env['WIN32DEFPREFIX']        = ''
diff --git a/src/engine/SCons/Tool/msgfmt.py b/src/engine/SCons/Tool/msgfmt.py
index 4cfe686..9904f11 100644
--- a/src/engine/SCons/Tool/msgfmt.py
+++ b/src/engine/SCons/Tool/msgfmt.py
@@ -21,7 +21,7 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/msgfmt.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/msgfmt.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 from SCons.Builder import BuilderBase
 #############################################################################
diff --git a/src/engine/SCons/Tool/msginit.py b/src/engine/SCons/Tool/msginit.py
index 53046d6..7afd804 100644
--- a/src/engine/SCons/Tool/msginit.py
+++ b/src/engine/SCons/Tool/msginit.py
@@ -24,7 +24,7 @@ Tool specific initialization of msginit tool.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/msginit.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/msginit.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Warnings
 import SCons.Builder
diff --git a/src/engine/SCons/Tool/msgmerge.py b/src/engine/SCons/Tool/msgmerge.py
index e2d06f4..a1b4b73 100644
--- a/src/engine/SCons/Tool/msgmerge.py
+++ b/src/engine/SCons/Tool/msgmerge.py
@@ -24,7 +24,7 @@ Tool specific initialization for `msgmerge` tool.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/msgmerge.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/msgmerge.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 #############################################################################
 def _update_or_init_po_files(target, source, env):
diff --git a/src/engine/SCons/Tool/msgmerge.xml b/src/engine/SCons/Tool/msgmerge.xml
index 9917af0..404c6d5 100644
--- a/src/engine/SCons/Tool/msgmerge.xml
+++ b/src/engine/SCons/Tool/msgmerge.xml
@@ -64,7 +64,7 @@ Target nodes defined through &b-POUpdate; are not built by default
 (they're <literal>Ignore</literal>d from <literal>'.'</literal> node). Instead,
 they are added automatically to special <literal>Alias</literal> 
 (<literal>'po-update'</literal> by default). The alias name may be changed
-through the &cv-link-POUPDATE_ALIAS; construction variable.  You can easilly 
+through the &cv-link-POUPDATE_ALIAS; construction variable.  You can easily 
 update <literal>PO</literal> files in your project by <command>scons
 po-update</command>.
 </para>
diff --git a/src/engine/SCons/Tool/mslib.py b/src/engine/SCons/Tool/mslib.py
index a82e88d..c4f1b0e 100644
--- a/src/engine/SCons/Tool/mslib.py
+++ b/src/engine/SCons/Tool/mslib.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/mslib.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/mslib.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/src/engine/SCons/Tool/mslink.py b/src/engine/SCons/Tool/mslink.py
index 6906303..ce561fa 100644
--- a/src/engine/SCons/Tool/mslink.py
+++ b/src/engine/SCons/Tool/mslink.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/mslink.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/mslink.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 
@@ -263,6 +263,7 @@ def generate(env):
     env['_SHLINK_SOURCES'] = windowsShlinkSources
     env['SHLINKCOM']   =  compositeShLinkAction
     env.Append(SHLIBEMITTER = [windowsLibEmitter])
+    env.Append(LDMODULEEMITTER = [windowsLibEmitter])
     env['LINK']        = 'link'
     env['LINKFLAGS']   = SCons.Util.CLVar('/nologo')
     env['_PDB'] = pdbGenerator
diff --git a/src/engine/SCons/Tool/mssdk.py b/src/engine/SCons/Tool/mssdk.py
index 3836817..66bf75d 100644
--- a/src/engine/SCons/Tool/mssdk.py
+++ b/src/engine/SCons/Tool/mssdk.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/mssdk.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/mssdk.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 """engine.SCons.Tool.mssdk
 
diff --git a/src/engine/SCons/Tool/msvc.py b/src/engine/SCons/Tool/msvc.py
index 03d65ee..bf4de45 100644
--- a/src/engine/SCons/Tool/msvc.py
+++ b/src/engine/SCons/Tool/msvc.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/msvc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/msvc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 import re
diff --git a/src/engine/SCons/Tool/msvc.xml b/src/engine/SCons/Tool/msvc.xml
index b5933c4..14ce811 100644
--- a/src/engine/SCons/Tool/msvc.xml
+++ b/src/engine/SCons/Tool/msvc.xml
@@ -86,7 +86,7 @@ file as the second element. Normally the object file is ignored.
 This builder method is only
 provided when Microsoft Visual C++ is being used as the compiler.
 The PCH builder method is generally used in
-conjuction with the PCH construction variable to force object files to use
+conjunction with the PCH construction variable to force object files to use
 the precompiled header:
 </para>
 
diff --git a/src/engine/SCons/Tool/msvs.py b/src/engine/SCons/Tool/msvs.py
index 0ad4c78..d47a939 100644
--- a/src/engine/SCons/Tool/msvs.py
+++ b/src/engine/SCons/Tool/msvs.py
@@ -30,7 +30,7 @@ selection method.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/msvs.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/msvs.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/Tool/msvsTests.py b/src/engine/SCons/Tool/msvsTests.py
index 9cee847..4e8ac14 100644
--- a/src/engine/SCons/Tool/msvsTests.py
+++ b/src/engine/SCons/Tool/msvsTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/msvsTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/msvsTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import sys
diff --git a/src/engine/SCons/Tool/mwcc.py b/src/engine/SCons/Tool/mwcc.py
index a130d0f..31d815e 100644
--- a/src/engine/SCons/Tool/mwcc.py
+++ b/src/engine/SCons/Tool/mwcc.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/mwcc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/mwcc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import os.path
diff --git a/src/engine/SCons/Tool/mwld.py b/src/engine/SCons/Tool/mwld.py
index 8f6f3a2..434f260 100644
--- a/src/engine/SCons/Tool/mwld.py
+++ b/src/engine/SCons/Tool/mwld.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/mwld.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/mwld.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Tool
 
@@ -56,6 +56,7 @@ def generate(env):
     env['SHLINKFLAGS'] = '$LINKFLAGS'
     env['SHLINKCOM']   = shlib_action
     env['SHLIBEMITTER']= shlib_emitter
+    env['LDMODULEEMITTER']= shlib_emitter
 
 
 def exists(env):
diff --git a/src/engine/SCons/Tool/nasm.py b/src/engine/SCons/Tool/nasm.py
index 86a7ef8..663e918 100644
--- a/src/engine/SCons/Tool/nasm.py
+++ b/src/engine/SCons/Tool/nasm.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/nasm.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/nasm.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/src/engine/SCons/Tool/packaging/__init__.py b/src/engine/SCons/Tool/packaging/__init__.py
index 2107d5f..d0a8dca 100644
--- a/src/engine/SCons/Tool/packaging/__init__.py
+++ b/src/engine/SCons/Tool/packaging/__init__.py
@@ -25,7 +25,7 @@ SCons Packaging Tool.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/packaging/__init__.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/packaging/__init__.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Environment
 from SCons.Variables import *
diff --git a/src/engine/SCons/Tool/packaging/ipk.py b/src/engine/SCons/Tool/packaging/ipk.py
index 51c3381..ae4d7fc 100644
--- a/src/engine/SCons/Tool/packaging/ipk.py
+++ b/src/engine/SCons/Tool/packaging/ipk.py
@@ -24,7 +24,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/packaging/ipk.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/packaging/ipk.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Builder
 import SCons.Node.FS
diff --git a/src/engine/SCons/Tool/packaging/msi.py b/src/engine/SCons/Tool/packaging/msi.py
index 41b7c77..cc563b8 100644
--- a/src/engine/SCons/Tool/packaging/msi.py
+++ b/src/engine/SCons/Tool/packaging/msi.py
@@ -25,7 +25,7 @@ The msi packager.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/packaging/msi.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/packaging/msi.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import SCons
diff --git a/src/engine/SCons/Tool/packaging/rpm.py b/src/engine/SCons/Tool/packaging/rpm.py
index f7e2577..cf3ea81 100644
--- a/src/engine/SCons/Tool/packaging/rpm.py
+++ b/src/engine/SCons/Tool/packaging/rpm.py
@@ -25,7 +25,7 @@ The rpm packager.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/packaging/rpm.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/packaging/rpm.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 
@@ -168,7 +168,7 @@ def build_specfile_sections(spec):
         'X_RPM_POSTUNINSTALL' : '%%postun\n%s\n\n',
         'X_RPM_VERIFY'        : '%%verify\n%s\n\n',
 
-        # These are for internal use but could possibly be overriden
+        # These are for internal use but could possibly be overridden
         'X_RPM_PREP'          : '%%prep\n%s\n\n',
         'X_RPM_BUILD'         : '%%build\n%s\n\n',
         'X_RPM_INSTALL'       : '%%install\n%s\n\n',
diff --git a/src/engine/SCons/Tool/packaging/src_tarbz2.py b/src/engine/SCons/Tool/packaging/src_tarbz2.py
index 438fc20..6314e64 100644
--- a/src/engine/SCons/Tool/packaging/src_tarbz2.py
+++ b/src/engine/SCons/Tool/packaging/src_tarbz2.py
@@ -26,7 +26,7 @@ The tarbz2 SRC packager.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/packaging/src_tarbz2.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/packaging/src_tarbz2.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 from SCons.Tool.packaging import putintopackageroot
 
diff --git a/src/engine/SCons/Tool/packaging/src_targz.py b/src/engine/SCons/Tool/packaging/src_targz.py
index 6a85869..7431fb7 100644
--- a/src/engine/SCons/Tool/packaging/src_targz.py
+++ b/src/engine/SCons/Tool/packaging/src_targz.py
@@ -26,7 +26,7 @@ The targz SRC packager.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/packaging/src_targz.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/packaging/src_targz.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 from SCons.Tool.packaging import putintopackageroot
 
diff --git a/src/engine/SCons/Tool/packaging/src_zip.py b/src/engine/SCons/Tool/packaging/src_zip.py
index e1a1d49..99f8c06 100644
--- a/src/engine/SCons/Tool/packaging/src_zip.py
+++ b/src/engine/SCons/Tool/packaging/src_zip.py
@@ -26,7 +26,7 @@ The zip SRC packager.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/packaging/src_zip.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/packaging/src_zip.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 from SCons.Tool.packaging import putintopackageroot
 
diff --git a/src/engine/SCons/Tool/packaging/tarbz2.py b/src/engine/SCons/Tool/packaging/tarbz2.py
index 79f8219..02568d5 100644
--- a/src/engine/SCons/Tool/packaging/tarbz2.py
+++ b/src/engine/SCons/Tool/packaging/tarbz2.py
@@ -26,7 +26,7 @@ The tarbz2 SRC packager.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/packaging/tarbz2.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/packaging/tarbz2.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 from SCons.Tool.packaging import stripinstallbuilder, putintopackageroot
 
diff --git a/src/engine/SCons/Tool/packaging/targz.py b/src/engine/SCons/Tool/packaging/targz.py
index eeb3d6a..09b1726 100644
--- a/src/engine/SCons/Tool/packaging/targz.py
+++ b/src/engine/SCons/Tool/packaging/targz.py
@@ -26,7 +26,7 @@ The targz SRC packager.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/packaging/targz.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/packaging/targz.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 from SCons.Tool.packaging import stripinstallbuilder, putintopackageroot
 
diff --git a/src/engine/SCons/Tool/packaging/zip.py b/src/engine/SCons/Tool/packaging/zip.py
index 6c4037d..bc263fb 100644
--- a/src/engine/SCons/Tool/packaging/zip.py
+++ b/src/engine/SCons/Tool/packaging/zip.py
@@ -26,7 +26,7 @@ The zip SRC packager.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/packaging/zip.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/packaging/zip.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 from SCons.Tool.packaging import stripinstallbuilder, putintopackageroot
 
diff --git a/src/engine/SCons/Tool/pdf.py b/src/engine/SCons/Tool/pdf.py
index 0ccb49b..b2d378e 100644
--- a/src/engine/SCons/Tool/pdf.py
+++ b/src/engine/SCons/Tool/pdf.py
@@ -28,7 +28,7 @@ Add an explicit action to run epstopdf to convert .eps files to .pdf
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/pdf.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/pdf.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Builder
 import SCons.Tool
diff --git a/src/engine/SCons/Tool/pdflatex.py b/src/engine/SCons/Tool/pdflatex.py
index 42188f4..f4cb4ae 100644
--- a/src/engine/SCons/Tool/pdflatex.py
+++ b/src/engine/SCons/Tool/pdflatex.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/pdflatex.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/pdflatex.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Action
 import SCons.Util
diff --git a/src/engine/SCons/Tool/pdftex.py b/src/engine/SCons/Tool/pdftex.py
index e38a278..84adf47 100644
--- a/src/engine/SCons/Tool/pdftex.py
+++ b/src/engine/SCons/Tool/pdftex.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/pdftex.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/pdftex.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import SCons.Action
diff --git a/src/engine/SCons/Tool/qt.py b/src/engine/SCons/Tool/qt.py
index b8233c0..923f719 100644
--- a/src/engine/SCons/Tool/qt.py
+++ b/src/engine/SCons/Tool/qt.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/qt.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/qt.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 import re
@@ -320,6 +320,7 @@ def generate(env):
     # correctly later by our emitter.
     env.AppendUnique(PROGEMITTER =[AutomocStatic],
                      SHLIBEMITTER=[AutomocShared],
+                     LDMODULEEMITTER=[AutomocShared],
                      LIBEMITTER  =[AutomocStatic],
                      # Of course, we need to link against the qt libraries
                      CPPPATH=["$QT_CPPPATH"],
diff --git a/src/engine/SCons/Tool/rmic.py b/src/engine/SCons/Tool/rmic.py
index 6045b7f..dbacda3 100644
--- a/src/engine/SCons/Tool/rmic.py
+++ b/src/engine/SCons/Tool/rmic.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/rmic.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/rmic.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 
diff --git a/src/engine/SCons/Tool/rpcgen.py b/src/engine/SCons/Tool/rpcgen.py
index 1a3de76..eec6bf6 100644
--- a/src/engine/SCons/Tool/rpcgen.py
+++ b/src/engine/SCons/Tool/rpcgen.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/rpcgen.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/rpcgen.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 from SCons.Builder import Builder
 import SCons.Util
diff --git a/src/engine/SCons/Tool/rpm.py b/src/engine/SCons/Tool/rpm.py
index 46b3112..400639e 100644
--- a/src/engine/SCons/Tool/rpm.py
+++ b/src/engine/SCons/Tool/rpm.py
@@ -33,7 +33,7 @@ tar.gz consisting of the source file and a specfile.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/rpm.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/rpm.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import re
diff --git a/src/engine/SCons/Tool/rpmutils.py b/src/engine/SCons/Tool/rpmutils.py
index 10b5560..82247bc 100644
--- a/src/engine/SCons/Tool/rpmutils.py
+++ b/src/engine/SCons/Tool/rpmutils.py
@@ -35,7 +35,7 @@ exact syntax.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/rpmutils.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/rpmutils.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 
 import platform
diff --git a/src/engine/SCons/Tool/sgiar.py b/src/engine/SCons/Tool/sgiar.py
index 6be4c65..1e7a4bd 100644
--- a/src/engine/SCons/Tool/sgiar.py
+++ b/src/engine/SCons/Tool/sgiar.py
@@ -33,7 +33,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sgiar.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/sgiar.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 import SCons.Tool
diff --git a/src/engine/SCons/Tool/sgic++.py b/src/engine/SCons/Tool/sgic++.py
index 8ae115a..556009a 100644
--- a/src/engine/SCons/Tool/sgic++.py
+++ b/src/engine/SCons/Tool/sgic++.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sgic++.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/sgic++.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Util
 
diff --git a/src/engine/SCons/Tool/sgicc.py b/src/engine/SCons/Tool/sgicc.py
index ec26bf1..f236b78 100644
--- a/src/engine/SCons/Tool/sgicc.py
+++ b/src/engine/SCons/Tool/sgicc.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sgicc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/sgicc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import cc
 
diff --git a/src/engine/SCons/Tool/sgilink.py b/src/engine/SCons/Tool/sgilink.py
index 828f6d0..b0249d2 100644
--- a/src/engine/SCons/Tool/sgilink.py
+++ b/src/engine/SCons/Tool/sgilink.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sgilink.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/sgilink.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Util
 
diff --git a/src/engine/SCons/Tool/sunar.py b/src/engine/SCons/Tool/sunar.py
index 9c3e481..6f7fe70 100644
--- a/src/engine/SCons/Tool/sunar.py
+++ b/src/engine/SCons/Tool/sunar.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sunar.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/sunar.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Defaults
 import SCons.Tool
@@ -51,9 +51,6 @@ def generate(env):
         env['ARFLAGS']     = SCons.Util.CLVar('r')
         env['ARCOM']       = '$AR $ARFLAGS $TARGET $SOURCES'
 
-    env['SHLINK']      = '$LINK'
-    env['SHLINKFLAGS'] = SCons.Util.CLVar('$LINKFLAGS -G')
-    env['SHLINKCOM']   = '$SHLINK $SHLINKFLAGS -o $TARGET $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
     env['LIBPREFIX']   = 'lib'
     env['LIBSUFFIX']   = '.a'
 
diff --git a/src/engine/SCons/Tool/sunar.xml b/src/engine/SCons/Tool/sunar.xml
index 6ddf9ce..f7d4a4a 100644
--- a/src/engine/SCons/Tool/sunar.xml
+++ b/src/engine/SCons/Tool/sunar.xml
@@ -33,15 +33,11 @@ Sets construction variables for the Sun library archiver.
 <item>AR</item>
 <item>ARFLAGS</item>
 <item>ARCOM</item>
-<item>SHLINK</item>
-<item>SHLINKFLAGS</item>
-<item>SHLINKCOM</item>
 <item>LIBPREFIX</item>
 <item>LIBSUFFIX</item>
 </sets>
 <uses>
 <item>ARCOMSTR</item>
-<item>SHLINKCOMSTR</item>
 </uses>
 </tool>
 
diff --git a/src/engine/SCons/Tool/sunc++.py b/src/engine/SCons/Tool/sunc++.py
index 75fe435..8dc4d23 100644
--- a/src/engine/SCons/Tool/sunc++.py
+++ b/src/engine/SCons/Tool/sunc++.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sunc++.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/sunc++.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons
 
diff --git a/src/engine/SCons/Tool/suncc.py b/src/engine/SCons/Tool/suncc.py
index b543b95..b40a8d7 100644
--- a/src/engine/SCons/Tool/suncc.py
+++ b/src/engine/SCons/Tool/suncc.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/suncc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/suncc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Util
 
diff --git a/src/engine/SCons/Tool/sunf77.py b/src/engine/SCons/Tool/sunf77.py
index bff5c1a..a169c4f 100644
--- a/src/engine/SCons/Tool/sunf77.py
+++ b/src/engine/SCons/Tool/sunf77.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sunf77.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/sunf77.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Util
 
diff --git a/src/engine/SCons/Tool/sunf90.py b/src/engine/SCons/Tool/sunf90.py
index b0e31d1..bb737f7 100644
--- a/src/engine/SCons/Tool/sunf90.py
+++ b/src/engine/SCons/Tool/sunf90.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sunf90.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/sunf90.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Util
 
diff --git a/src/engine/SCons/Tool/sunf95.py b/src/engine/SCons/Tool/sunf95.py
index 5263f5a..52cbaa8 100644
--- a/src/engine/SCons/Tool/sunf95.py
+++ b/src/engine/SCons/Tool/sunf95.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sunf95.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/sunf95.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Util
 
diff --git a/src/engine/SCons/Tool/sunlink.py b/src/engine/SCons/Tool/sunlink.py
index d8a941f..90f95bd 100644
--- a/src/engine/SCons/Tool/sunlink.py
+++ b/src/engine/SCons/Tool/sunlink.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/sunlink.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/sunlink.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import os.path
@@ -66,6 +66,10 @@ def generate(env):
     env['RPATHSUFFIX'] = ''
     env['_RPATH'] = '${_concat(RPATHPREFIX, RPATH, RPATHSUFFIX, __env__)}'
 
+    # Support for versioned libraries
+    link._setup_versioned_lib_variables(env, tool = 'sunlink', use_soname = True) 
+    env['LINKCALLBACKS'] = link._versioned_lib_callbacks()
+
 def exists(env):
     return ccLinker
 
diff --git a/src/engine/SCons/Tool/swig.py b/src/engine/SCons/Tool/swig.py
index 83cd315..74c5a8e 100644
--- a/src/engine/SCons/Tool/swig.py
+++ b/src/engine/SCons/Tool/swig.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/swig.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/swig.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 import re
@@ -44,6 +44,8 @@ import SCons.Tool
 import SCons.Util
 import SCons.Node
 
+swigs = [ 'swig', 'swig3.0', 'swig2.0' ]
+
 SwigAction = SCons.Action.Action('$SWIGCOM', '$SWIGCOMSTR')
 
 def swigSuffixEmitter(env, source):
@@ -128,9 +130,10 @@ def _swigEmitter(target, source, env):
             target.extend(java_files)
     return (target, source)
 
-def _get_swig_version(env):
+def _get_swig_version(env, swig):
     """Run the SWIG command line tool to get and return the version number"""
-    pipe = SCons.Action._subproc(env, [env['SWIG'], '-version'],
+    swig = env.subst(swig)
+    pipe = SCons.Action._subproc(env, SCons.Util.CLVar(swig) + ['-version'],
                                  stdin = 'devnull',
                                  stderr = 'devnull',
                                  stdout = subprocess.PIPE)
@@ -160,8 +163,9 @@ def generate(env):
     java_file.add_action('.i', SwigAction)
     java_file.add_emitter('.i', _swigEmitter)
 
-    env['SWIG']              = 'swig'
-    env['SWIGVERSION']       = _get_swig_version(env)
+    if 'SWIG' not in env:
+        env['SWIG'] = env.Detect(swigs) or swigs[0]
+    env['SWIGVERSION']       = _get_swig_version(env, env['SWIG'])
     env['SWIGFLAGS']         = SCons.Util.CLVar('')
     env['SWIGDIRECTORSUFFIX'] = '_wrap.h'
     env['SWIGCFILESUFFIX']   = '_wrap$CFILESUFFIX'
diff --git a/src/engine/SCons/Tool/tar.py b/src/engine/SCons/Tool/tar.py
index 50afeae..e967438 100644
--- a/src/engine/SCons/Tool/tar.py
+++ b/src/engine/SCons/Tool/tar.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/tar.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/tar.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Action
 import SCons.Builder
diff --git a/src/engine/SCons/Tool/tex.py b/src/engine/SCons/Tool/tex.py
index 9dd462e..92542d6 100644
--- a/src/engine/SCons/Tool/tex.py
+++ b/src/engine/SCons/Tool/tex.py
@@ -32,7 +32,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/tex.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/tex.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 import re
diff --git a/src/engine/SCons/Tool/textfile.py b/src/engine/SCons/Tool/textfile.py
index 9c2b3a1..87a3ad8 100644
--- a/src/engine/SCons/Tool/textfile.py
+++ b/src/engine/SCons/Tool/textfile.py
@@ -44,7 +44,7 @@ Textfile/Substfile builder for SCons.
     is unpredictible whether the expansion will occur.
 """
 
-__revision__ = "src/engine/SCons/Tool/textfile.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/textfile.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons
 
diff --git a/src/engine/SCons/Tool/tlib.py b/src/engine/SCons/Tool/tlib.py
index 9040439..4951bdd 100644
--- a/src/engine/SCons/Tool/tlib.py
+++ b/src/engine/SCons/Tool/tlib.py
@@ -27,7 +27,7 @@ XXX
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/tlib.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/tlib.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Tool
 import SCons.Tool.bcc32
diff --git a/src/engine/SCons/Tool/wix.py b/src/engine/SCons/Tool/wix.py
index 1291f18..0fa3ea7 100644
--- a/src/engine/SCons/Tool/wix.py
+++ b/src/engine/SCons/Tool/wix.py
@@ -30,7 +30,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/wix.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/wix.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.Builder
 import SCons.Action
diff --git a/src/engine/SCons/Tool/wixTests.py b/src/engine/SCons/Tool/wixTests.py
index c6ececf..5d6f2b8 100644
--- a/src/engine/SCons/Tool/wixTests.py
+++ b/src/engine/SCons/Tool/wixTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/wixTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/wixTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import unittest
 import os.path
diff --git a/src/engine/SCons/Tool/xgettext.py b/src/engine/SCons/Tool/xgettext.py
index ed6245d..4edd4aa 100644
--- a/src/engine/SCons/Tool/xgettext.py
+++ b/src/engine/SCons/Tool/xgettext.py
@@ -24,7 +24,7 @@ Tool specific initialization of `xgettext` tool.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Tool/xgettext.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/xgettext.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 #############################################################################
 class _CmdRunner(object):
diff --git a/src/engine/SCons/Tool/xgettext.xml b/src/engine/SCons/Tool/xgettext.xml
index 5b782d1..3a6954a 100644
--- a/src/engine/SCons/Tool/xgettext.xml
+++ b/src/engine/SCons/Tool/xgettext.xml
@@ -108,7 +108,7 @@ the results shall be as the comments above say.
 <emphasis>Example 2.</emphasis>
 The &b-POTUpdate; builder may be used with no target specified, in which
 case default target <filename>messages.pot</filename> will be used. The
-default target may also be overriden by setting &cv-link-POTDOMAIN; construction
+default target may also be overridden by setting &cv-link-POTDOMAIN; construction
 variable or providing it as an override to &b-POTUpdate; builder:
 </para>
 <example_commands>    
diff --git a/src/engine/SCons/Tool/yacc.py b/src/engine/SCons/Tool/yacc.py
index 4b8d938..c05140f 100644
--- a/src/engine/SCons/Tool/yacc.py
+++ b/src/engine/SCons/Tool/yacc.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/yacc.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/yacc.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 
diff --git a/src/engine/SCons/Tool/zip.py b/src/engine/SCons/Tool/zip.py
index 750769a..02999c2 100644
--- a/src/engine/SCons/Tool/zip.py
+++ b/src/engine/SCons/Tool/zip.py
@@ -31,7 +31,7 @@ selection method.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Tool/zip.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Tool/zip.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 
diff --git a/src/engine/SCons/Util.py b/src/engine/SCons/Util.py
index 343f0a7..be86831 100644
--- a/src/engine/SCons/Util.py
+++ b/src/engine/SCons/Util.py
@@ -24,7 +24,7 @@ Various utility functions go here.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Util.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Util.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import sys
diff --git a/src/engine/SCons/UtilTests.py b/src/engine/SCons/UtilTests.py
index d0af0ee..cf584ed 100644
--- a/src/engine/SCons/UtilTests.py
+++ b/src/engine/SCons/UtilTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/UtilTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/UtilTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import SCons.compat
 
diff --git a/src/engine/SCons/Variables/BoolVariable.py b/src/engine/SCons/Variables/BoolVariable.py
index 1594559..c7310a7 100644
--- a/src/engine/SCons/Variables/BoolVariable.py
+++ b/src/engine/SCons/Variables/BoolVariable.py
@@ -34,7 +34,7 @@ Usage example:
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Variables/BoolVariable.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Variables/BoolVariable.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __all__ = ['BoolVariable',]
 
diff --git a/src/engine/SCons/Variables/BoolVariableTests.py b/src/engine/SCons/Variables/BoolVariableTests.py
index 6d40c7a..75aa386 100644
--- a/src/engine/SCons/Variables/BoolVariableTests.py
+++ b/src/engine/SCons/Variables/BoolVariableTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Variables/BoolVariableTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Variables/BoolVariableTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import sys
 import unittest
diff --git a/src/engine/SCons/Variables/EnumVariable.py b/src/engine/SCons/Variables/EnumVariable.py
index bc95cf6..734d48c 100644
--- a/src/engine/SCons/Variables/EnumVariable.py
+++ b/src/engine/SCons/Variables/EnumVariable.py
@@ -37,7 +37,7 @@ Usage example:
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Variables/EnumVariable.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Variables/EnumVariable.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __all__ = ['EnumVariable',]
 
diff --git a/src/engine/SCons/Variables/EnumVariableTests.py b/src/engine/SCons/Variables/EnumVariableTests.py
index d1de184..07e7c8a 100644
--- a/src/engine/SCons/Variables/EnumVariableTests.py
+++ b/src/engine/SCons/Variables/EnumVariableTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Variables/EnumVariableTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Variables/EnumVariableTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import sys
 import unittest
diff --git a/src/engine/SCons/Variables/ListVariable.py b/src/engine/SCons/Variables/ListVariable.py
index 1faee72..5541f30 100644
--- a/src/engine/SCons/Variables/ListVariable.py
+++ b/src/engine/SCons/Variables/ListVariable.py
@@ -46,7 +46,7 @@ Usage example:
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Variables/ListVariable.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Variables/ListVariable.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 # Know Bug: This should behave like a Set-Type, but does not really,
 # since elements can occur twice.
diff --git a/src/engine/SCons/Variables/ListVariableTests.py b/src/engine/SCons/Variables/ListVariableTests.py
index c0ee887..1c75402 100644
--- a/src/engine/SCons/Variables/ListVariableTests.py
+++ b/src/engine/SCons/Variables/ListVariableTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Variables/ListVariableTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Variables/ListVariableTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import copy
 import sys
diff --git a/src/engine/SCons/Variables/PackageVariable.py b/src/engine/SCons/Variables/PackageVariable.py
index b7a59fe..a0244e4 100644
--- a/src/engine/SCons/Variables/PackageVariable.py
+++ b/src/engine/SCons/Variables/PackageVariable.py
@@ -50,7 +50,7 @@ Usage example:
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Variables/PackageVariable.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Variables/PackageVariable.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __all__ = ['PackageVariable',]
 
diff --git a/src/engine/SCons/Variables/PackageVariableTests.py b/src/engine/SCons/Variables/PackageVariableTests.py
index 46c15aa..6062704 100644
--- a/src/engine/SCons/Variables/PackageVariableTests.py
+++ b/src/engine/SCons/Variables/PackageVariableTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Variables/PackageVariableTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Variables/PackageVariableTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import sys
 import unittest
diff --git a/src/engine/SCons/Variables/PathVariable.py b/src/engine/SCons/Variables/PathVariable.py
index b095cbc..a7c68a8 100644
--- a/src/engine/SCons/Variables/PathVariable.py
+++ b/src/engine/SCons/Variables/PathVariable.py
@@ -68,7 +68,7 @@ Usage example:
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Variables/PathVariable.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Variables/PathVariable.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __all__ = ['PathVariable',]
 
diff --git a/src/engine/SCons/Variables/PathVariableTests.py b/src/engine/SCons/Variables/PathVariableTests.py
index 54ec9df..d741cca 100644
--- a/src/engine/SCons/Variables/PathVariableTests.py
+++ b/src/engine/SCons/Variables/PathVariableTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Variables/PathVariableTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Variables/PathVariableTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 import sys
diff --git a/src/engine/SCons/Variables/VariablesTests.py b/src/engine/SCons/Variables/VariablesTests.py
index 8505a8b..300519b 100644
--- a/src/engine/SCons/Variables/VariablesTests.py
+++ b/src/engine/SCons/Variables/VariablesTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/Variables/VariablesTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Variables/VariablesTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import sys
 import unittest
diff --git a/src/engine/SCons/Variables/__init__.py b/src/engine/SCons/Variables/__init__.py
index a00d4f8..57447d7 100644
--- a/src/engine/SCons/Variables/__init__.py
+++ b/src/engine/SCons/Variables/__init__.py
@@ -26,7 +26,7 @@ customizable variables to an SCons build.
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/engine/SCons/Variables/__init__.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Variables/__init__.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os.path
 import sys
diff --git a/src/engine/SCons/Warnings.py b/src/engine/SCons/Warnings.py
index 615bc45..5edef27 100644
--- a/src/engine/SCons/Warnings.py
+++ b/src/engine/SCons/Warnings.py
@@ -27,7 +27,7 @@ This file implements the warnings framework for SCons.
 
 """
 
-__revision__ = "src/engine/SCons/Warnings.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/Warnings.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import sys
 
diff --git a/src/engine/SCons/WarningsTests.py b/src/engine/SCons/WarningsTests.py
index 632833c..588bd53 100644
--- a/src/engine/SCons/WarningsTests.py
+++ b/src/engine/SCons/WarningsTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/WarningsTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/WarningsTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import sys
 import unittest
diff --git a/src/engine/SCons/__init__.py b/src/engine/SCons/__init__.py
index 019cbf9..d7ec281 100644
--- a/src/engine/SCons/__init__.py
+++ b/src/engine/SCons/__init__.py
@@ -27,15 +27,15 @@ The main package for the SCons software construction utility.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/__init__.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/__init__.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
-__version__ = "2.4.0"
+__version__ = "2.4.1"
 
-__build__ = "rel_2.4.0:3365:9259ea1c13d7"
+__build__ = "rel_2.4.1:3453:73fefd3ea0b0"
 
-__buildsys__ = "hpmicrodog"
+__buildsys__ = "ubuntu1404-32bit"
 
-__date__ = "2015/09/21 14:03:43"
+__date__ = "2015/11/09 03:25:05"
 
 __developer__ = "bdbaddog"
 
diff --git a/src/engine/SCons/compat/__init__.py b/src/engine/SCons/compat/__init__.py
index 2352d4c..62f28f2 100644
--- a/src/engine/SCons/compat/__init__.py
+++ b/src/engine/SCons/compat/__init__.py
@@ -60,7 +60,7 @@ function defined below loads the module as the "real" name (without the
 rest of our code will find our pre-loaded compatibility module.
 """
 
-__revision__ = "src/engine/SCons/compat/__init__.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/compat/__init__.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import sys
diff --git a/src/engine/SCons/compat/_scons_builtins.py b/src/engine/SCons/compat/_scons_builtins.py
index bf2005f..b42fc2d 100644
--- a/src/engine/SCons/compat/_scons_builtins.py
+++ b/src/engine/SCons/compat/_scons_builtins.py
@@ -51,7 +51,7 @@ the FUNCTIONS or DATA output, that means those names are already built in
 to this version of Python and we don't need to add them from this module.
 """
 
-__revision__ = "src/engine/SCons/compat/_scons_builtins.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/compat/_scons_builtins.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import builtins
 
diff --git a/src/engine/SCons/compat/_scons_collections.py b/src/engine/SCons/compat/_scons_collections.py
index 1f13065..4a0d96b 100644
--- a/src/engine/SCons/compat/_scons_collections.py
+++ b/src/engine/SCons/compat/_scons_collections.py
@@ -30,7 +30,7 @@ used by SCons, in an interface that looks enough like collections for
 our purposes.
 """
 
-__revision__ = "src/engine/SCons/compat/_scons_collections.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/compat/_scons_collections.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 # Use exec to hide old names from fixers.
 exec("""if True:
diff --git a/src/engine/SCons/compat/_scons_dbm.py b/src/engine/SCons/compat/_scons_dbm.py
index 3bc0768..080c424 100644
--- a/src/engine/SCons/compat/_scons_dbm.py
+++ b/src/engine/SCons/compat/_scons_dbm.py
@@ -30,7 +30,7 @@ that the whichdb.whichdb() implementstation in the various 2.X versions of
 Python won't blow up even if dbm wasn't compiled in.
 """
 
-__revision__ = "src/engine/SCons/compat/_scons_dbm.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/compat/_scons_dbm.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 class error(Exception):
     pass
diff --git a/src/engine/SCons/compat/_scons_hashlib.py b/src/engine/SCons/compat/_scons_hashlib.py
index de93e4b..6262530 100644
--- a/src/engine/SCons/compat/_scons_hashlib.py
+++ b/src/engine/SCons/compat/_scons_hashlib.py
@@ -31,7 +31,7 @@ purposes, anyway).  In fact, this module will raise an ImportError if
 the underlying md5 module isn't available.
 """
 
-__revision__ = "src/engine/SCons/compat/_scons_hashlib.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/compat/_scons_hashlib.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import md5
 from string import hexdigits
diff --git a/src/engine/SCons/compat/_scons_io.py b/src/engine/SCons/compat/_scons_io.py
index 72cd3b6..25cf119 100644
--- a/src/engine/SCons/compat/_scons_io.py
+++ b/src/engine/SCons/compat/_scons_io.py
@@ -29,7 +29,7 @@ functionality.  It only wraps the portions of io functionality used
 by SCons, in an interface that looks enough like io for our purposes.
 """
 
-__revision__ = "src/engine/SCons/compat/_scons_io.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/compat/_scons_io.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 # Use the "imp" module to protect the imports below from fixers.
 import imp
diff --git a/src/engine/SCons/cpp.py b/src/engine/SCons/cpp.py
index cf80a4b..56bb003 100644
--- a/src/engine/SCons/cpp.py
+++ b/src/engine/SCons/cpp.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/cpp.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/cpp.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 __doc__ = """
 SCons C Pre-Processor module
diff --git a/src/engine/SCons/cppTests.py b/src/engine/SCons/cppTests.py
index df66586..5c4675f 100644
--- a/src/engine/SCons/cppTests.py
+++ b/src/engine/SCons/cppTests.py
@@ -21,7 +21,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/cppTests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/cppTests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import atexit
 import sys
diff --git a/src/engine/SCons/exitfuncs.py b/src/engine/SCons/exitfuncs.py
index 19c8e8e..ae07ec0 100644
--- a/src/engine/SCons/exitfuncs.py
+++ b/src/engine/SCons/exitfuncs.py
@@ -27,7 +27,7 @@ Register functions which are executed when SCons exits for any reason.
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/engine/SCons/exitfuncs.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/engine/SCons/exitfuncs.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 
 import atexit
diff --git a/src/script/scons-time.py b/src/script/scons-time.py
index f37d906..054e73e 100644
--- a/src/script/scons-time.py
+++ b/src/script/scons-time.py
@@ -32,7 +32,7 @@
 from __future__ import division
 from __future__ import nested_scopes
 
-__revision__ = "src/script/scons-time.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/script/scons-time.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import getopt
 import glob
diff --git a/src/script/scons.bat b/src/script/scons.bat
index bda2baa..563ab59 100644
--- a/src/script/scons.bat
+++ b/src/script/scons.bat
@@ -1,11 +1,11 @@
 @REM Copyright (c) 2001 - 2015 The SCons Foundation

-@REM src/script/scons.bat rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog

+@REM src/script/scons.bat rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog

 @echo off

 set SCONS_ERRORLEVEL=

 if "%OS%" == "Windows_NT" goto WinNT

 

 @REM for 9x/Me you better not have more than 9 args

-python -c "from os.path import join; import sys; sys.path = [ join(sys.prefix, 'Lib', 'site-packages', 'scons-2.4.0'), join(sys.prefix, 'Lib', 'site-packages', 'scons'), join(sys.prefix, 'scons-2.4.0'), join(sys.prefix, 'scons')] + sys.path; import SCons.Script; SCons.Script.main()" %1 %2 %3 %4 %5 %6 %7 %8 %9

+python -c "from os.path import join; import sys; sys.path = [ join(sys.prefix, 'Lib', 'site-packages', 'scons-2.4.1'), join(sys.prefix, 'Lib', 'site-packages', 'scons'), join(sys.prefix, 'scons-2.4.1'), join(sys.prefix, 'scons')] + sys.path; import SCons.Script; SCons.Script.main()" %1 %2 %3 %4 %5 %6 %7 %8 %9

 @REM no way to set exit status of this script for 9x/Me

 goto endscons

 

diff --git a/src/script/scons.py b/src/script/scons.py
index 0e59647..e2f66bd 100644
--- a/src/script/scons.py
+++ b/src/script/scons.py
@@ -23,15 +23,15 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/script/scons.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/script/scons.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
-__version__ = "2.4.0"
+__version__ = "2.4.1"
 
-__build__ = "rel_2.4.0:3365:9259ea1c13d7"
+__build__ = "rel_2.4.1:3453:73fefd3ea0b0"
 
-__buildsys__ = "hpmicrodog"
+__buildsys__ = "ubuntu1404-32bit"
 
-__date__ = "2015/09/21 14:03:43"
+__date__ = "2015/11/09 03:25:05"
 
 __developer__ = "bdbaddog"
 
diff --git a/src/script/sconsign.py b/src/script/sconsign.py
index 35dad8a..775f23b 100644
--- a/src/script/sconsign.py
+++ b/src/script/sconsign.py
@@ -23,15 +23,15 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/script/sconsign.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/script/sconsign.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
-__version__ = "2.4.0"
+__version__ = "2.4.1"
 
-__build__ = "rel_2.4.0:3365:9259ea1c13d7"
+__build__ = "rel_2.4.1:3453:73fefd3ea0b0"
 
-__buildsys__ = "hpmicrodog"
+__buildsys__ = "ubuntu1404-32bit"
 
-__date__ = "2015/09/21 14:03:43"
+__date__ = "2015/11/09 03:25:05"
 
 __developer__ = "bdbaddog"
 
diff --git a/src/setup.py b/src/setup.py
index d5bcc10..3b7a119 100644
--- a/src/setup.py
+++ b/src/setup.py
@@ -32,13 +32,13 @@ NOTE: Installed SCons is not importable like usual Python packages. It is
       below is dedicated to make it happen on various platforms.
 """
 
-__revision__ = "src/setup.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/setup.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 import os
 import stat
 import sys
 
-Version = "2.4.0"
+Version = "2.4.1"
 
 man_pages = [
     'scons.1',
@@ -343,7 +343,7 @@ class install_scripts(_install_scripts):
                 self.copy_scons(src, scons_version_bat)
 
         # --- distutils copy/paste ---
-        if os.name == 'posix':
+        if hasattr(os, 'chmod') and hasattr(os,'stat'):
             # Set the executable bits (owner, group, and world) on
             # all the scripts we just installed.
             for file in self.get_outputs():
diff --git a/src/test_aegistests.py b/src/test_aegistests.py
index f9869f2..7927046 100644
--- a/src/test_aegistests.py
+++ b/src/test_aegistests.py
@@ -21,7 +21,7 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/test_aegistests.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/test_aegistests.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 """
 Verify that we have proper Copyright notices on all the right files
diff --git a/src/test_files.py b/src/test_files.py
index d4e2b25..3f84ca9 100644
--- a/src/test_files.py
+++ b/src/test_files.py
@@ -22,7 +22,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/test_files.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/test_files.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 """
 Verify that we have certain important files in our distribution
diff --git a/src/test_interrupts.py b/src/test_interrupts.py
index 777bcc1..c8c6609 100644
--- a/src/test_interrupts.py
+++ b/src/test_interrupts.py
@@ -21,7 +21,7 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/test_interrupts.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/test_interrupts.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 """
 Verify that the SCons source code contains only correct handling of
diff --git a/src/test_pychecker.py b/src/test_pychecker.py
index 4ae788f..c361dba 100644
--- a/src/test_pychecker.py
+++ b/src/test_pychecker.py
@@ -21,7 +21,7 @@
 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-__revision__ = "src/test_pychecker.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/test_pychecker.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 """
 Use pychecker to catch various Python coding errors.
diff --git a/src/test_setup.py b/src/test_setup.py
index 3c3b073..045476a 100644
--- a/src/test_setup.py
+++ b/src/test_setup.py
@@ -22,7 +22,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/test_setup.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/test_setup.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 """
 Test how the setup.py script installs SCons.
diff --git a/src/test_strings.py b/src/test_strings.py
index 61577b4..1d5b660 100644
--- a/src/test_strings.py
+++ b/src/test_strings.py
@@ -22,7 +22,7 @@
 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-__revision__ = "src/test_strings.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog"
+__revision__ = "src/test_strings.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog"
 
 """
 Verify that we have proper strings like Copyright notices on all the
@@ -107,7 +107,7 @@ class Checker(object):
 class CheckUnexpandedStrings(Checker):
     expressions = [
         re.compile('Copyright (c) 2001 - 2015 The SCons Foundation'),
-        re.compile('src/test_strings.py rel_2.4.0:3365:9259ea1c13d7 2015/09/21 14:03:43 bdbaddog'),
+        re.compile('src/test_strings.py rel_2.4.1:3453:73fefd3ea0b0 2015/11/09 03:25:05 bdbaddog'),
     ]
     def must_be_built(self):
         return None