As per the hackathon member last saturday, for some weird reason some users are getting gmp.h file not found error when installing, http://forum.ethereum.org/discussion/133/osx-fatal-error-with-go-client#latest OSX 10.9.3 Mavericks ././secp256k1/src/num_gmp.h:8:10: fatal error: 'gmp.h' file not found # include <gmp.h>