scons-local/scons.py

   1 #! /usr/bin/env python
   2 #
   3 # SCons - a Software Constructor
   4 #
   5 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
   6 #
   7 # Permission is hereby granted, free of charge, to any person obtaining
   8 # a copy of this software and associated documentation files (the
   9 # "Software"), to deal in the Software without restriction, including
  10 # without limitation the rights to use, copy, modify, merge, publish,
  11 # distribute, sublicense, and/or sell copies of the Software, and to
  12 # permit persons to whom the Software is furnished to do so, subject to
  13 # the following conditions:
  14 #
  15 # The above copyright notice and this permission notice shall be included
  16 # in all copies or substantial portions of the Software.
  17 #
  18 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
  19 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
  20 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  21 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  22 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  23 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  24 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25 #
  26
  27 __revision__ = "src/script/scons.py 3057 2008/06/09 22:21:00 knight"
  28
  29 __version__ = "0.98.5"
  30
  31 __build__ = "r3057"
  32
  33 __buildsys__ = "bangkok"
  34
  35 __date__ = "2008/06/09 22:21:00"
  36
  37 __developer__ = "knight"
  38
  39 import os
  40 import os.path
  41 import sys
  42
  43 ##############################################################################
  44 # BEGIN STANDARD SCons SCRIPT HEADER
  45 #
  46 # This is the cut-and-paste logic so that a self-contained script can
  47 # interoperate correctly with different SCons versions and installation
  48 # locations for the engine.  If you modify anything in this section, you
  49 # should also change other scripts that use this same header.
  50 ##############################################################################
  51
  52 # Strip the script directory from sys.path() so on case-insensitive
  53 # (WIN32) systems Python doesn't think that the "scons" script is the
  54 # "SCons" package.  Replace it with our own library directories
  55 # (version-specific first, in case they installed by hand there,
  56 # followed by generic) so we pick up the right version of the build
  57 # engine modules if they're in either directory.
  58
  59 script_dir = sys.path[0]
  60
  61 if script_dir in sys.path:
  62     sys.path.remove(script_dir)
  63
  64 libs = []
  65
  66 if os.environ.has_key("SCONS_LIB_DIR"):
  67     libs.append(os.environ["SCONS_LIB_DIR"])
  68
  69 local = 'scons-local-' + __version__
  70 if script_dir:
  71     local = os.path.join(script_dir, local)
  72 libs.append(os.path.abspath(local))
  73
  74 scons_version = 'scons-%s' % __version__
  75
  76 prefs = []
  77
  78 if sys.platform == 'win32':
  79     # sys.prefix is (likely) C:\Python*;
  80     # check only C:\Python*.
  81     prefs.append(sys.prefix)
  82     prefs.append(os.path.join(sys.prefix, 'Lib', 'site-packages'))
  83 else:
  84     # On other (POSIX) platforms, things are more complicated due to
  85     # the variety of path names and library locations.  Try to be smart
  86     # about it.
  87     if script_dir == 'bin':
  88         # script_dir is `pwd`/bin;
  89         # check `pwd`/lib/scons*.
  90         prefs.append(os.getcwd())
  91     else:
  92         if script_dir == '.' or script_dir == '':
  93             script_dir = os.getcwd()
  94         head, tail = os.path.split(script_dir)
  95         if tail == "bin":
  96             # script_dir is /foo/bin;
  97             # check /foo/lib/scons*.
  98             prefs.append(head)
  99
 100     head, tail = os.path.split(sys.prefix)
 101     if tail == "usr":
 102         # sys.prefix is /foo/usr;
 103         # check /foo/usr/lib/scons* first,
 104         # then /foo/usr/local/lib/scons*.
 105         prefs.append(sys.prefix)
 106         prefs.append(os.path.join(sys.prefix, "local"))
 107     elif tail == "local":
 108         h, t = os.path.split(head)
 109         if t == "usr":
 110             # sys.prefix is /foo/usr/local;
 111             # check /foo/usr/local/lib/scons* first,
 112             # then /foo/usr/lib/scons*.
 113             prefs.append(sys.prefix)
 114             prefs.append(head)
 115         else:
 116             # sys.prefix is /foo/local;
 117             # check only /foo/local/lib/scons*.
 118             prefs.append(sys.prefix)
 119     else:
 120         # sys.prefix is /foo (ends in neither /usr or /local);
 121         # check only /foo/lib/scons*.
 122         prefs.append(sys.prefix)
 123
 124     temp = map(lambda x: os.path.join(x, 'lib'), prefs)
 125     temp.extend(map(lambda x: os.path.join(x,
 126                                            'lib',
 127                                            'python' + sys.version[:3],
 128                                            'site-packages'),
 129                            prefs))
 130     prefs = temp
 131
 132     # Add the parent directory of the current python's library to the
 133     # preferences.  On SuSE-91/AMD64, for example, this is /usr/lib64,
 134     # not /usr/lib.
 135     try:
 136         libpath = os.__file__
 137     except AttributeError:
 138         pass
 139     else:
 140         while libpath:
 141             libpath, tail = os.path.split(libpath)
 142             if tail[:6] == "python":
 143                 break
 144         if libpath:
 145             # Python library is in /usr/libfoo/python*;
 146             # check /usr/libfoo/scons*.
 147             prefs.append(libpath)
 148
 149 # Look first for 'scons-__version__' in all of our preference libs,
 150 # then for 'scons'.
 151 libs.extend(map(lambda x: os.path.join(x, scons_version), prefs))
 152 libs.extend(map(lambda x: os.path.join(x, 'scons'), prefs))
 153
 154 sys.path = libs + sys.path
 155
 156 ##############################################################################
 157 # END STANDARD SCons SCRIPT HEADER
 158 ##############################################################################
 159
 160 if __name__ == "__main__":
 161     import SCons.Script
 162     SCons.Script.main()