Fix #4

Author: cyluss

setup.py

@@ -55,9 +55,9 @@ def spawn(self, cmd):
     link_flags = []
     macros = {'LIBSASS_PYTHON_VERSION': '\\"' + version + '\\"'}
 else:
-    flags = ['-fPIC', '-Wall', '-Wno-parentheses']
-    if sys.platform != 'darwin':
-        flags.append('-Wno-tautological-compare')
+    flags = ['-fPIC', '-Wall', '-Wno-parentheses', '-Wno-tautological-compare']
+    if sys.platform == 'darwin':
+        flags.pop()
     link_flags = ['-fPIC', '-lstdc++']
     macros = {'LIBSASS_PYTHON_VERSION': '"' + version + '"'}