The second missing symbol generated by gcc trunk on MacOS X 10.4 when compiling with -m64 can be demonstrated with this test case...
main() { __int128_t a, b; b= a / 10; } which when compiled with "gcc-4 -m64 division.c" produces the linkage error... can't resolve symbols: ___divti3, referenced from: _main in ccDcwJYL.o ld64 failed: symbol(s) not found collect2: ld returned 1 exit status Hopefully fixes for these already reside in Apple's gcc branch and can be ported over without much grief. Jack