The assembler used does not support x86_64. Check the binutils build, and run the cross-assembler with --version. If the cross-assembler is okay, maybe the wrong one is used by xgcc. There's an option to gcc I think to print what commands it uses. Martin On Thu, Mar 17, 2005 at 12:58:52AM +0800, GONG Jie wrote: > Assembler messages: > Fatal error: No compiled in support for x86_64