2008/9/9 Peter Cai <newptcai@gmail.com>: > /root/tmp/glibc-build/libc_pic.os: In function `__libc_fork': > /root/tmp/glibc-2.7/posix/../nptl/sysdeps/unix/sysv/linux/i386/../fork.c:76: > undefined reference to `__sync_bool_compare_and_swap_4' Your compiler is missing the __sync_* builtins. Have you tried a newer compiler? Cheers, Carlos.