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"""SCons.Tool.link
Tool-specific initialization for the generic Posix linker.
There normally shouldn't be any need to import this module directly.
It will usually be imported through the generic SCons.Tool.Tool()
selection method.
"""
#
# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 The SCons Foundation
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# 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/link.py 2013/03/03 09:48:35 garyo"
import re
import SCons.Defaults
import SCons.Tool
import SCons.Util
import SCons.Warnings
from SCons.Tool.FortranCommon import isfortran
cplusplus = __import__('c++', globals(), locals(), [])
issued_mixed_link_warning = False
def smart_link(source, target, env, for_signature):
has_cplusplus = cplusplus.iscplusplus(source)
has_fortran = isfortran(env, source)
if has_cplusplus and has_fortran:
global issued_mixed_link_warning
if not issued_mixed_link_warning:
msg = "Using $CXX to link Fortran and C++ code together.\n\t" + \
"This may generate a buggy executable if the '%s'\n\t" + \
"compiler does not know how to deal with Fortran runtimes."
SCons.Warnings.warn(SCons.Warnings.FortranCxxMixWarning,
msg % env.subst('$CXX'))
issued_mixed_link_warning = True
return '$CXX'
elif has_fortran:
return '$FORTRAN'
elif has_cplusplus:
return '$CXX'
return '$CC'
def shlib_emitter(target, source, env):
Verbose = False
platform = env.subst('$PLATFORM')
for tgt in target:
tgt.attributes.shared = 1
try:
# target[0] comes in as libtest.so. Add the version extensions
version = env.subst('$SHLIBVERSION')
if version:
version_names = shlib_emitter_names(target, source, env)
# change the name of the target to include the version number
target[0].name = version_names[0]
for name in version_names:
env.SideEffect(name, target[0])
env.Clean(target[0], name)
if Verbose:
print "shlib_emitter: add side effect - ",name
except KeyError:
version = None
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"""
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':
versionparts = version.split('.')
name = target[0].name
# generate library name with the version number
version_name = target[0].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('$SHLIBSUFFIX')
name = target[0].name
# generate library name with the version number
suffix_re = re.escape(shlib_suffix)
version_name = re.sub(suffix_re, '.' + version + shlib_suffix, name)
if Verbose:
print "shlib_emitter_names: target is ", version_name
print "shlib_emitter_names: side effect: ", name
# add version_name to list of names to be a Side effect
version_names.append(version_name)
except KeyError:
version = None
return version_names
def generate(env):
"""Add Builders and construction variables for gnulink to an Environment."""
SCons.Tool.createSharedLibBuilder(env)
SCons.Tool.createProgBuilder(env)
env['SHLINK'] = '$LINK'
env['SHLINKFLAGS'] = SCons.Util.CLVar('$LINKFLAGS -shared')
env['SHLINKCOM'] = '$SHLINK -o $TARGET $SHLINKFLAGS $__RPATH $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
# don't set up the emitter, cause AppendUnique will generate a list
# starting with None :-(
env.Append(SHLIBEMITTER = [shlib_emitter])
env['SMARTLINK'] = smart_link
env['LINK'] = "$SMARTLINK"
env['LINKFLAGS'] = SCons.Util.CLVar('')
# __RPATH is only set to something ($_RPATH typically) on platforms that support it.
env['LINKCOM'] = '$LINK -o $TARGET $LINKFLAGS $__RPATH $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
env['LIBDIRPREFIX']='-L'
env['LIBDIRSUFFIX']=''
env['_LIBFLAGS']='${_stripixes(LIBLINKPREFIX, LIBS, LIBLINKSUFFIX, LIBPREFIXES, LIBSUFFIXES, __env__)}'
env['LIBLINKPREFIX']='-l'
env['LIBLINKSUFFIX']=''
if env['PLATFORM'] == 'hpux':
env['SHLIBSUFFIX'] = '.sl'
elif env['PLATFORM'] == 'aix':
env['SHLIBSUFFIX'] = '.a'
# For most platforms, a loadable module is the same as a shared
# library. Platforms which are different can override these, but
# 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['LDMODULEPREFIX'] = '$SHLIBPREFIX'
env['LDMODULESUFFIX'] = '$SHLIBSUFFIX'
env['LDMODULEFLAGS'] = '$SHLINKFLAGS'
env['LDMODULECOM'] = '$LDMODULE -o $TARGET $LDMODULEFLAGS $__RPATH $SOURCES $_LIBDIRFLAGS $_LIBFLAGS'
def exists(env):
# This module isn't really a Tool on its own, it's common logic for
# other linkers.
return None
# Local Variables:
# tab-width:4
# indent-tabs-mode:nil
# End:
# vim: set expandtab tabstop=4 shiftwidth=4:
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