How to fix error when install Fabric
Installing collected packages: pycrypto, paramiko
Running setup.py install for pycrypto
warning: GMP library not found; Not building Crypto.PublicKey._fastmath.
building 'Crypto.Hash.MD2' extension
gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -fwrapv -Wall -Wstrict-prototypes -DENABLE_DTRACE -arch i386 -arch ppc -arch x86_64 -pipe -std=c99 -O3 -fomit-frame-pointer