Harry Henry Gebel: get extra compiler flags from the CFLAGS environment

variable.

(Is this really needed?  Can we drop it when the config file mechanism
allows users to set compiler flags in setup.cfg?)

Lib/distutils/command/build_ext.py

@@ -295,6 +295,14 @@ class build_ext (Command):
             macros = build_info.get ('macros')
             include_dirs = build_info.get ('include_dirs')
             extra_args = build_info.get ('extra_compile_args')
+            # honor CFLAGS enviroment variable
+            # XXX do we *really* need this? or is it just a hack until
+            # the user can put compiler flags in setup.cfg?
+            if os.environ.has_key('CFLAGS'):
+                if not extra_args:
+                    extra_args = []
+                extra_args = string.split(os.environ['CFLAGS']) + extra_args
+                
             objects = self.compiler.compile (sources,
                                              output_dir=self.build_temp,
                                              macros=macros,