Hello, I want to manually build GCC and GLIBC. I have read that something has to be set in the GCC (configure, make, ...) so that I can later build GLIBC. I don't understand it completely but there is something wrong with FORTIFY_SOURCE or stack-protector. The problem is stated in https://sourceware.org/bugzilla/show_bug.cgi?id=10375. Please see comments #6 and #7. So I want to know which combination has to be set in GCC to correctly build the GLIBC? -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE -fstack-protector -fno-stack-protector Regards, Mahmood