python: Fix various contamination issues leading to broken/missing c modules

The move of libcrypto to /lib instead of /usr/lib has broken the _hashlib module
compilation. There were also a number of other failing modules which should
have been building correctly. This turned out partly to be the /lib issue
but also due to a number of native paths creeping into compiler commandlines.

These changes add in /lib as part of the searh directory and remove
a number of host contamination issues within setup.py. Post release we
should really further go through this file and just delete large sections
of it as its hard to be sure what strange paths python is injecting as
search paths.

This patch also fixes issues where re-execution of the compile task
would corrupt the Makefile in various ways, again leading to puzzling
paths within the configuration.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 59 insertions, 2 deletions

diff --git a/meta/recipes-devtools/python/python/01-use-proper-tools-for-cross-build.patch b/meta/recipes-devtools/python/python/01-use-proper-tools-for-cross-build.patch
index 27afc030b2..691beada03 100644
--- a/meta/recipes-devtools/python/python/01-use-proper-tools-for-cross-build.patch
+++ b/meta/recipes-devtools/python/python/01-use-proper-tools-for-cross-build.patch
@@ -119,8 +119,8 @@ Index: Python-2.7.2/setup.py
  
          # XXX Omitted modules: gl, pure, dl, SGI-specific modules
  
-+        lib_dirs = [ os.getenv( "STAGING_LIBDIR" ) ]
-+        inc_dirs = [ os.getenv( "STAGING_INCDIR" ) ]
++        lib_dirs = [ os.getenv("STAGING_LIBDIR"),  os.getenv("STAGING_BASELIBDIR") ]
++        inc_dirs = [ os.getenv("STAGING_INCDIR") ]
 +
          #
          # The following modules are all pretty straightforward, and compile
diff --git a/meta/recipes-devtools/python/python/setuptweaks.patch b/meta/recipes-devtools/python/python/setuptweaks.patch
new file mode 100644
index 0000000000..c34ef160d3
--- /dev/null
+++ b/meta/recipes-devtools/python/python/setuptweaks.patch
@@ -0,0 +1,57 @@
+This patch removes various ways native system options can pass into the python 
+compilation and somehow break C modules.
+
+Upstream-Status: Configuration [OE Specific]
+
+RP 2012/04/23
+
+Index: Python-2.7.2/setup.py
+===================================================================
+--- Python-2.7.2.orig/setup.py	2012-04-23 20:03:47.295582553 +0000
++++ Python-2.7.2/setup.py	2012-04-23 20:03:15.000000000 +0000
+@@ -231,7 +231,13 @@
+         # compilers
+         if compiler is not None:
+             (ccshared,cflags) = sysconfig.get_config_vars('CCSHARED','CFLAGS')
+-            args['compiler_so'] = compiler + ' ' + ccshared + ' ' + cflags
++            # Need to filter out -isysroot from the flags. Ideally should 
++            # figure out target flags here.
++            flags = []
++            for f in cflags.split():
++                if not f.startswith("-isystem"):
++                    flags.append(f)
++            args['compiler_so'] = compiler + ' ' + ccshared + ' ' + ' '.join(flags)
+         self.compiler.set_executables(**args)
+ 
+         build_ext.build_extensions(self)
+@@ -393,7 +399,6 @@
+         # into configure and stored in the Makefile (issue found on OS X 10.3).
+         for env_var, arg_name, dir_list in (
+                 ('LDFLAGS', '-R', self.compiler.runtime_library_dirs),
+-                ('LDFLAGS', '-L', self.compiler.library_dirs),
+                 ('CPPFLAGS', '-I', self.compiler.include_dirs)):
+             env_val = sysconfig.get_config_var(env_var)
+             if env_val:
+@@ -419,16 +424,16 @@
+                     for directory in reversed(options.dirs):
+                         add_dir_to_list(dir_list, directory)
+ 
+-        if os.path.normpath(sys.prefix) != '/usr' \
+-                and not sysconfig.get_config_var('PYTHONFRAMEWORK'):
++#        if os.path.normpath(sys.prefix) != '/usr' \
++#                and not sysconfig.get_config_var('PYTHONFRAMEWORK'):
+             # OSX note: Don't add LIBDIR and INCLUDEDIR to building a framework
+             # (PYTHONFRAMEWORK is set) to avoid # linking problems when
+             # building a framework with different architectures than
+             # the one that is currently installed (issue #7473)
+-            add_dir_to_list(self.compiler.library_dirs,
+-                            sysconfig.get_config_var("LIBDIR"))
+-            add_dir_to_list(self.compiler.include_dirs,
+-                            sysconfig.get_config_var("INCLUDEDIR"))
++#            add_dir_to_list(self.compiler.library_dirs,
++#                            sysconfig.get_config_var("LIBDIR"))
++#            add_dir_to_list(self.compiler.include_dirs,
++#                            sysconfig.get_config_var("INCLUDEDIR"))
+ 
+         try:
+             have_unicode = unicode