can't be used with MACOSX_DEPLOYMENT_TARGET environment variable set to: 10.1
Was this intentionally set to 10.1? FYI, I'm not sure that will work for Tekkotsu. I can only guarantee anything for 10.4 and later...
If I set the MACOSX_DEPLOYMENT_TARGET explicitly to 10.4, I get the following error instead:
The 10.4 setting (or just leaving it unset) should work. I'm wondering if you did a clean build (make clean) after switching over? It might be unhappy trying to link stuff compiled with different deployment target settings.
-ethan