clang error: unknown argument: '-mno-fused-madd' (python package installation failure)

Question

I get the following error when attempting to install psycopg2 via pip on Mavericks 10.9:

clang: error: unknown argument: \'-mno-fused-madd\' [-W         


        

Answer 1

Variation on the _sysconfigdata.py fix: use a virtual environment

cp /System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/_sysconfigdata.py ${VIRTUAL_ENV}/lib/python2.7/_sysconfigdata.py

Then edit your copy at ${VIRTUAL_ENV}/lib/python2.7/_sysconfigdata.py

I removed all the occurences of '-mno-fused-madd' and then builds worked in that virtualenv.

No root needed!