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

--- setup.py	2015-10-07 23:32:58.891329173 +0200
+++ setup.py	2015-10-07 23:46:29.653349924 +0200
@@ -507,11 +507,8 @@ class PyBuildExt(build_ext):
         # if a file is found in one of those directories, it can
         # be assumed that no additional -I,-L directives are needed.
         if not cross_compiling:
-            lib_dirs = self.compiler.library_dirs + [
-                '/lib64', '/usr/lib64',
-                '/lib', '/usr/lib',
-                ]
-            inc_dirs = self.compiler.include_dirs + ['/usr/include']
+            lib_dirs = os.getenv('LIBRARY_PATH', '').split(os.pathsep)
+            inc_dirs = os.getenv('C_INCLUDE_PATH', '').split(os.pathsep)
         else:
             lib_dirs = self.compiler.library_dirs[:]
             inc_dirs = self.compiler.include_dirs[:]
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<tr><td><span title='2021-12-13 17:48:25 +0100'>2021-12-13</span></td><td><a href='/guix/commit/gnu/packages/rocm.scm?id=8394619baceb118df92e355377fd543bb1aa501a'>gnu: Simplify package inputs.</a><span class='msg-avail'>...<span class='msg-tooltip'>This commit was obtained by running:

  ./pre-inst-env guix style

without any additional argument.
</span></span></td><td>Ludovic Courtès</td></tr>