Make sure the build system honors C_INCLUDE_PATH and LIBRARY_PATH when
looking for headers and libraries.

--- Python-2.7.10/setup.py	2015-10-07 18:33:18.125153186 +0200
+++ Python-2.7.10/setup.py	2015-10-07 18:33:47.497347552 +0200
@@ -526,6 +526,14 @@ class PyBuildExt(build_ext):
             inc_dirs += ['/system/include', '/atheos/autolnk/include']
             inc_dirs += os.getenv('C_INCLUDE_PATH', '').split(os.pathsep)
 
+        # Always honor these variables.
+        if not cross_compiling:
+            lib_dirs += os.getenv('LIBRARY_PATH', '').split(os.pathsep)
+            inc_dirs += os.getenv('C_INCLUDE_PATH', '').split(os.pathsep)
+        else:
+            lib_dirs = os.getenv('CROSS_LIBRARY_PATH', '').split(os.pathsep)
+            inc_dirs = os.getenv('CROSS_CPATH', '').split(os.pathsep)
+
         # OSF/1 and Unixware have some stuff in /usr/ccs/lib (like -ldb)
         if host_platform in ['osf1', 'unixware7', 'openunix8']:
             lib_dirs += ['/usr/ccs/lib']
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<tr><td><span title='2024-08-31 10:42:49 +0200'>2024-08-31</span></td><td><a href='/guix/commit/tests/profiles.scm?id=949ee85019b242d29a1065cde27c491af57b657b'>profiles: Use C.UTF-8 instead of ‘glibc-utf8-locales’ where possible.</a><span class='msg-avail'>...<span class='msg-tooltip'>This is a followup to 1cebc334a77030c0c94955981652f4df7608c9e3.

* guix/profiles.scm (ca-certificate-bundle)[libc-utf8-locales-for-target]:
Remove.
[build]: Use “C.UTF-8” instead of “en_US.utf8”.
(profile-derivation)[libc-utf8-locales-for-target]: Remove.
[set-utf8-locale]: Rewrite to a gexp that calls ‘setlocale’ for “C.UTF-8”.
* tests/profiles.scm ("profile-derivation, cross-compilation"): Remove
‘locales’ variable and related check.

Change-Id: I7cb148b9149fe5fbe5b9b1b25fdce1002ad1f37e
</span></span></td><td>Ludovic Courtès</td></tr>