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-rwxr-xr-x[-rw-r--r--]src/script/scons.py115
1 files changed, 59 insertions, 56 deletions
diff --git a/src/script/scons.py b/src/script/scons.py
index bee0224..b3172b1 100644..100755
--- a/src/script/scons.py
+++ b/src/script/scons.py
@@ -2,7 +2,7 @@
#
# SCons - a Software Constructor
#
-# Copyright (c) 2001 - 2017 The SCons Foundation
+# Copyright (c) 2001 - 2019 The SCons Foundation
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
@@ -25,22 +25,30 @@
from __future__ import print_function
-__revision__ = "src/script/scons.py rel_3.0.0:4395:8972f6a2f699 2017/09/18 12:59:24 bdbaddog"
+__revision__ = "src/script/scons.py e724ae812eb96f4858a132f5b8c769724744faf6 2019-07-21 00:04:47 bdeegan"
-__version__ = "3.0.0"
+__version__ = "3.1.0"
-__build__ = "rel_3.0.0:4395:8972f6a2f699"
+__build__ = "e724ae812eb96f4858a132f5b8c769724744faf6"
-__buildsys__ = "ubuntu-16"
+__buildsys__ = "kufra"
-__date__ = "2017/09/18 12:59:24"
+__date__ = "2019-07-21 00:04:47"
-__developer__ = "bdbaddog"
+__developer__ = "bdeegan"
+
+# This is the entry point to the SCons program.
+# The only job of this script is to work out where the guts of the program
+# could be and import them, where the real work begins.
+# SCons can be invoked several different ways
+# - from an installed location
+# - from a "local install" copy
+# - from a source tree, which has a different dir struture than the other two
+# Try to account for all those possibilities.
import os
import sys
-
##############################################################################
# BEGIN STANDARD SCons SCRIPT HEADER
#
@@ -50,57 +58,53 @@ import sys
# should also change other scripts that use this same header.
##############################################################################
-# Strip the script directory from sys.path() so on case-insensitive
-# (WIN32) systems Python doesn't think that the "scons" script is the
-# "SCons" package. Replace it with our own library directories
-# (version-specific first, in case they installed by hand there,
-# followed by generic) so we pick up the right version of the build
-# engine modules if they're in either directory.
-
-
+# compatibility check
if (3,0,0) < sys.version_info < (3,5,0) or sys.version_info < (2,7,0):
msg = "scons: *** SCons version %s does not run under Python version %s.\n\
-Python < 3.5 is not yet supported.\n"
+Python 2.7 or >= 3.5 is required.\n"
sys.stderr.write(msg % (__version__, sys.version.split()[0]))
sys.exit(1)
-
-script_dir = sys.path[0]
-
-if script_dir in sys.path:
- sys.path.remove(script_dir)
+# Strip the script directory from sys.path so on case-insensitive
+# (WIN32) systems Python doesn't think that the "scons" script is the
+# "SCons" package.
+script_dir = os.path.dirname(os.path.realpath(__file__))
+script_path = os.path.realpath(os.path.dirname(__file__))
+if script_path in sys.path:
+ sys.path.remove(script_path)
libs = []
if "SCONS_LIB_DIR" in os.environ:
libs.append(os.environ["SCONS_LIB_DIR"])
-# - running from source takes priority (since 2.3.2), excluding SCONS_LIB_DIR settings
-script_path = os.path.abspath(os.path.dirname(__file__))
-source_path = os.path.join(script_path, '..', 'engine')
-libs.append(source_path)
+# running from source takes 2nd priority (since 2.3.2), following SCONS_LIB_DIR
+source_path = os.path.join(script_path, os.pardir, 'engine')
+if os.path.isdir(source_path):
+ libs.append(source_path)
+# add local-install locations
local_version = 'scons-local-' + __version__
local = 'scons-local'
if script_dir:
local_version = os.path.join(script_dir, local_version)
local = os.path.join(script_dir, local)
-libs.append(os.path.abspath(local_version))
-libs.append(os.path.abspath(local))
+if os.path.isdir(local_version):
+ libs.append(os.path.abspath(local_version))
+if os.path.isdir(local):
+ libs.append(os.path.abspath(local))
scons_version = 'scons-%s' % __version__
# preferred order of scons lookup paths
prefs = []
-
-# - running from egg check
+# if we can find package information, use it
try:
import pkg_resources
except ImportError:
pass
else:
- # when running from an egg add the egg's directory
try:
d = pkg_resources.get_distribution('scons')
except pkg_resources.DistributionNotFound:
@@ -109,18 +113,18 @@ else:
prefs.append(d.location)
if sys.platform == 'win32':
- # sys.prefix is (likely) C:\Python*;
- # check only C:\Python*.
+ # Use only sys.prefix on Windows
prefs.append(sys.prefix)
prefs.append(os.path.join(sys.prefix, 'Lib', 'site-packages'))
else:
# On other (POSIX) platforms, things are more complicated due to
- # the variety of path names and library locations. Try to be smart
- # about it.
+ # the variety of path names and library locations.
+ # Build up some possibilities, then transform them into candidates
+ temp = []
if script_dir == 'bin':
# script_dir is `pwd`/bin;
# check `pwd`/lib/scons*.
- prefs.append(os.getcwd())
+ temp.append(os.getcwd())
else:
if script_dir == '.' or script_dir == '':
script_dir = os.getcwd()
@@ -128,42 +132,41 @@ else:
if tail == "bin":
# script_dir is /foo/bin;
# check /foo/lib/scons*.
- prefs.append(head)
+ temp.append(head)
head, tail = os.path.split(sys.prefix)
if tail == "usr":
# sys.prefix is /foo/usr;
# check /foo/usr/lib/scons* first,
# then /foo/usr/local/lib/scons*.
- prefs.append(sys.prefix)
- prefs.append(os.path.join(sys.prefix, "local"))
+ temp.append(sys.prefix)
+ temp.append(os.path.join(sys.prefix, "local"))
elif tail == "local":
h, t = os.path.split(head)
if t == "usr":
# sys.prefix is /foo/usr/local;
# check /foo/usr/local/lib/scons* first,
# then /foo/usr/lib/scons*.
- prefs.append(sys.prefix)
- prefs.append(head)
+ temp.append(sys.prefix)
+ temp.append(head)
else:
# sys.prefix is /foo/local;
# check only /foo/local/lib/scons*.
- prefs.append(sys.prefix)
+ temp.append(sys.prefix)
else:
# sys.prefix is /foo (ends in neither /usr or /local);
# check only /foo/lib/scons*.
- prefs.append(sys.prefix)
+ temp.append(sys.prefix)
+
+ # suffix these to add to our original prefs:
+ prefs.extend([os.path.join(x, 'lib') for x in temp])
+ prefs.extend([os.path.join(x, 'lib', 'python' + sys.version[:3],
+ 'site-packages') for x in temp])
- temp = [os.path.join(x, 'lib') for x in prefs]
- temp.extend([os.path.join(x,
- 'lib',
- 'python' + sys.version[:3],
- 'site-packages') for x in prefs])
- prefs = temp
# Add the parent directory of the current python's library to the
- # preferences. On SuSE-91/AMD64, for example, this is /usr/lib64,
- # not /usr/lib.
+ # preferences. This picks up differences between, e.g., lib and lib64,
+ # and finds the base location in case of a non-copying virtualenv.
try:
libpath = os.__file__
except AttributeError:
@@ -177,9 +180,9 @@ else:
prefs.append(libpath)
# Look first for 'scons-__version__' in all of our preference libs,
-# then for 'scons'.
-libs.extend([os.path.join(x, scons_version) for x in prefs])
-libs.extend([os.path.join(x, 'scons') for x in prefs])
+# then for 'scons'. Skip paths that do not exist.
+libs.extend([os.path.join(x, scons_version) for x in prefs if os.path.isdir(x)])
+libs.extend([os.path.join(x, 'scons') for x in prefs if os.path.isdir(x)])
sys.path = libs + sys.path
@@ -191,9 +194,9 @@ if __name__ == "__main__":
try:
import SCons.Script
except ImportError:
- print("SCons import failed. Unable to find engine files in:")
+ sys.stderr.write("SCons import failed. Unable to find engine files in:\n")
for path in libs:
- print(" {}".format(path))
+ sys.stderr.write(" {}\n".format(path))
raise
# this does all the work, and calls sys.exit