From: Arnaud Fontaine <arnaud.fontaine@nexedi.com>
Date: Mon, 7 Mar 2011 13:02:05 +0900
Subject: [PATCH] Pass CPPFLAGS when building modules in Python 2.4

In contrary to Python 2.6, when building Python 2.4 modules, CPPFLAGS 
specified to configure script is not passed at all. This patch backports
the fix from Python 2.6.

--- Makefile.pre.in	2006-10-09 02:41:25.000000000 +0900
+++ Makefile.pre.in	2011-03-07 14:58:34.368000777 +0900
@@ -56,7 +56,10 @@
 OPT=		@OPT@
 BASECFLAGS=	@BASECFLAGS@
 CFLAGS=		$(BASECFLAGS) $(OPT)
-CPPFLAGS=	-I. -I$(srcdir)/Include
+# Both CPPFLAGS and LDFLAGS need to contain the shell's value for setup.py to
+# be able to build extension modules using the directories specified in the
+# environment variables
+CPPFLAGS=	-I. -I$(srcdir)/Include @CPPFLAGS@
 LDFLAGS=	@LDFLAGS@
 LDLAST=		@LDLAST@
 SGI_ABI=	@SGI_ABI@
--- setup.py	2006-10-09 02:41:25.000000000 +0900
+++ setup.py	2011-03-07 14:53:36.208000779 +0900
@@ -3,7 +3,7 @@
 
 __version__ = "$Revision: 52231 $"
 
-import sys, os, getopt, imp, re
+import sys, os, getopt, imp, re, optparse
 
 from distutils import log
 from distutils import sysconfig
@@ -243,6 +243,39 @@
         add_dir_to_list(self.compiler.library_dirs, '/usr/local/lib')
         add_dir_to_list(self.compiler.include_dirs, '/usr/local/include')
 
+        # Add paths specified in the environment variables LDFLAGS and
+        # CPPFLAGS for header and library files.
+        # We must get the values from the Makefile and not the environment
+        # directly since an inconsistently reproducible issue comes up where
+        # the environment variable is not set even though the value were passed
+        # into configure and stored in the Makefile (issue found on OS X 10.3).
+        for env_var, arg_name, dir_list in (
+                ('LDFLAGS', '-L', self.compiler.library_dirs),
+                ('CPPFLAGS', '-I', self.compiler.include_dirs)):
+            env_val = sysconfig.get_config_var(env_var)
+            if env_val:
+                # To prevent optparse from raising an exception about any
+                # options in env_val that is doesn't know about we strip out
+                # all double dashes and any dashes followed by a character
+                # that is not for the option we are dealing with.
+                #
+                # Please note that order of the regex is important!  We must
+                # strip out double-dashes first so that we don't end up with
+                # substituting "--Long" to "-Long" and thus lead to "ong" being
+                # used for a library directory.
+                env_val = re.sub(r'(^|\s+)-(-|(?!%s))' % arg_name[1],
+                                 ' ', env_val)
+                parser = optparse.OptionParser()
+                # Make sure that allowing args interspersed with options is
+                # allowed
+                parser.allow_interspersed_args = True
+                parser.error = lambda msg: None
+                parser.add_option(arg_name, dest="dirs", action="append")
+                options = parser.parse_args(env_val.split())[0]
+                if options.dirs:
+                    for directory in reversed(options.dirs):
+                        add_dir_to_list(dir_list, directory)
+
         # Add paths to popular package managers on OS X/darwin
         if sys.platform == "darwin":
             # Fink installs into /sw by default
--- Lib/optparse.py	2006-05-29 03:15:43.000000000 +0900
+++ Lib/optparse.py	2011-03-07 21:20:17.192000789 +0900
@@ -69,7 +69,13 @@
 import sys, os
 import types
 import textwrap
-from gettext import gettext as _
+
+try:
+    from gettext import gettext
+except ImportError:
+    def gettext(message):
+        return message
+_ = gettext
 
 def _repr(self):
     return "<%s at 0x%x: %s>" % (self.__class__.__name__, id(self), self)