Better handling of path related environment variables in setup.py

[nu774]

Both of C_INCLUDE_PATH, LD_RUN_PATH are actually colon separated lists of multiple paths, but setup.py doesn't take it into account.
Similarly, MSVC uses INCLUDE and LIB environment variables for the same purpose (but with semi-colon as separator), and it's better to be supported for win32 build.
The following patch takes care of all of them.

         # include, rpath, if set as environment variables:
-        if os.environ.get('C_INCLUDE_PATH'):
-            _add_directory(include_dirs, os.environ.get('C_INCLUDE_PATH'))
-        if os.environ.get('LD_RUN_PATH'):
-            _add_directory(library_dirs, os.environ.get('LD_RUN_PATH'))
+        for k in 'C_INCLUDE_PATH INCLUDE'.split():
+            if k in os.environ:
+                for d in os.environ[k].split(os.path.pathsep):
+                    _add_directory(include_dirs, d)
+
+        for k in 'LD_RUN_PATH LIBRARY_PATH LIB'.split():
+            if k in os.environ:
+                for d in os.environ[k].split(os.path.pathsep):
+                    _add_directory(library_dirs, d)

         prefix = sysconfig.get_config_var("prefix")
 

[aclark4life]

Can you send a pull request?

[aclark4life]

Fixed in 5881d67