build erlang_js on os x leopard

config.log

This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

configure:635: checking host system type
configure:656: checking target system type
configure:674: checking build system type
configure:1071: checking for whoami
configure:1889: checking for gcc
configure:2002: checking whether the C compiler (gcc  ) works
configure:2018: gcc -o conftest    conftest.c  1>&5
ld: library not found for -lcrt1.10.6.o
collect2: ld returned 1 exit status
configure: failed program was:

#line 2013 "configure"
#include "confdefs.h"

main(){return(0);}