brew install spidermonkey
cd emonk
make
./rebar compile
==> emonk (compile)
ld: library not found for -lmozjs
clang: error: linker command failed with exit code 1 (use -v to see invocation)
ERROR: $CC c_src/main.o c_src/queue.o c_src/to_erl.o c_src/to_js.o c_src/util.o c_src/vm.o $LDFLAGS $DRV_LDFLAGS -o priv/emonk.so failed with error: 1
make: *** [all] Error 1