I get this error, when building the it OSX. /opt/local/include/js/jsotypes.h:77: error: conflicting declaration ‘typedef struct JSUint64 uint64’ /System/Library/Frameworks/Security.framework/Headers/cssmconfig.h:48: error: ‘uint64’ has a previous declaration as ‘typedef uint64_t uint64’ I tried installing SpiderMonkey with MacPorts, but no luck.