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#! /usr/bin/env python
#
# SCons - a Software Constructor
#
# __COPYRIGHT__
#
# 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.
from __future__ import print_function
__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
__version__ = "__VERSION__"
__build__ = "__BUILD__"
__buildsys__ = "__BUILDSYS__"
__date__ = "__DATE__"
__developer__ = "__DEVELOPER__"
# 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
#
# This is the cut-and-paste logic so that a self-contained script can
# interoperate correctly with different SCons versions and installation
# locations for the engine. If you modify anything in this section, you
# should also change other scripts that use this same header.
##############################################################################
# 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 2.7 or >= 3.5 is required.\n"
sys.stderr.write(msg % (__version__, sys.version.split()[0]))
sys.exit(1)
# 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 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)
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 = []
# if we can find package information, use it
try:
import pkg_resources
except ImportError:
pass
else:
try:
d = pkg_resources.get_distribution('scons')
except pkg_resources.DistributionNotFound:
pass
else:
prefs.append(d.location)
if sys.platform == 'win32':
# 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.
# Build up some possibilities, then transform them into candidates
temp = []
if script_dir == 'bin':
# script_dir is `pwd`/bin;
# check `pwd`/lib/scons*.
temp.append(os.getcwd())
else:
if script_dir == '.' or script_dir == '':
script_dir = os.getcwd()
head, tail = os.path.split(script_dir)
if tail == "bin":
# script_dir is /foo/bin;
# check /foo/lib/scons*.
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*.
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*.
temp.append(sys.prefix)
temp.append(head)
else:
# sys.prefix is /foo/local;
# check only /foo/local/lib/scons*.
temp.append(sys.prefix)
else:
# sys.prefix is /foo (ends in neither /usr or /local);
# check only /foo/lib/scons*.
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])
# Add the parent directory of the current python's library to the
# 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:
pass
else:
# Split /usr/libfoo/python*/os.py to /usr/libfoo/python*.
libpath, tail = os.path.split(libpath)
# Split /usr/libfoo/python* to /usr/libfoo
libpath, tail = os.path.split(libpath)
# Check /usr/libfoo/scons*.
prefs.append(libpath)
# Look first for 'scons-__version__' in all of our preference libs,
# 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
##############################################################################
# END STANDARD SCons SCRIPT HEADER
##############################################################################
if __name__ == "__main__":
try:
import SCons.Script
except ImportError:
sys.stderr.write("SCons import failed. Unable to find engine files in:\n")
for path in libs:
sys.stderr.write(" {}\n".format(path))
raise
# this does all the work, and calls sys.exit
# with the proper exit status when done.
SCons.Script.main()
# Local Variables:
# tab-width:4
# indent-tabs-mode:nil
# End:
# vim: set expandtab tabstop=4 shiftwidth=4:
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