mac下安裝Crypto問題解決 clang: error: unknown argument: '-mno-fused-madd'

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

解決方法：

env ARCHFLAGS=-Wno-error=unused-command-line-argument-hard-error-in-future easy_install pycrypto

參考：

http://www.v2ex.com/t/105281