So, I\'ve found some other clang error\'s on here that appear to be somewhat similar, however, the fixes aren\'t applicable to my situation.
I\'m using OSX Mavericks
For the beginners, who read and tried the answer above but still failed (me):
sudo su -
export CFLAGS=-Qunused-arguments
export CPPFLAGS=-Qunused-arguments
pip install ansible
exit
You need to run those export commands as the root user. The previous answer clearly states this, but what it actually meant didn't translate to me as a terminal novice. What sudo su - does is basically switch to the root user. Then any commands you type are executed as root, and this thing works.
This finally let me get Ansible running on OSX 10.9.2 after a lot of head-banging.
Solution reference: https://github.com/ansible/ansible/issues/7146#issuecomment-41239561