--- a/Python/setup.py

+++ b/Python/setup.py

@@ -244,8 +244,9 @@ class PyBuildExt(build_ext):

     def detect_modules(self):

         # Ensure that /usr/local is always used

-        add_dir_to_list(self.compiler.library_dirs, '/usr/local/lib')

-        add_dir_to_list(self.compiler.include_dirs, '/usr/local/include')

+        # On GNU/Linux /usr/local is always used, so we don't include it twice

+        #add_dir_to_list(self.compiler.library_dirs, '/usr/local/lib')

+        #add_dir_to_list(self.compiler.include_dirs, '/usr/local/include')

         # Add paths specified in the environment variables LDFLAGS and

         # CPPFLAGS for header and library files.