--- setupext.py	2018-03-05 20:47:09.000000000 -0800
+++ setupext.py_	2018-09-18 08:55:51.296280545 -0700
@@ -265,14 +265,6 @@
     `distutils.core.Extension` constructor.
     """
     ext = DelayedExtension(name, files, *args, **kwargs)
-    for dir in get_base_dirs():
-        include_dir = os.path.join(dir, 'include')
-        if os.path.exists(include_dir):
-            ext.include_dirs.append(include_dir)
-        for lib in ('lib', 'lib64'):
-            lib_dir = os.path.join(dir, lib)
-            if os.path.exists(lib_dir):
-                ext.library_dirs.append(lib_dir)
     ext.include_dirs.append('.')
 
     return ext