If you are getting the following error when installing python packages using PIP or easy_install, don’t worry. You have come to the right place for solution.
First make sure you have developer tools installed. You can install them by executing the following command in terminal
xcode-select --install
The clang errors are due to changes introduced in Xcode 5.1 and due to the way the Apple-supplied system Python 2.7 is built. You can tell them to shut up by adding these environment variables in terminal.
export CFLAGS=-Qunused-arguments
export CPPFLAGS=-Qunused-arguments
Error while installing PIL, Pillow, MySql on OSX Mavericks using PIP
**clang: error: unknown argument: '-mno-fused-madd' [-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
error: command 'cc' failed with exit status 1**