Hi Charles Use -march=i486 or later or march=pentium-pro for the atomic-builtin to be linked. With Regards Vardhan -----Original Message----- From: gcc-help-owner@xxxxxxxxxxx [mailto:gcc-help-owner@xxxxxxxxxxx] On Behalf Of Charles Crisler Sent: Wednesday, December 03, 2008 7:04 PM To: gcc-help@xxxxxxxxxxx Subject: sync_add_and_fetch problem Hello GCC! I am trying to compile/link/run some code that uses sync_add_and_fetch(). The dynamic linker is failing to load one of my libraries because this function cannot be resolved. I thought that this function was included with GCC 4.1 and later. I have Fedora 9 32-bit on an x86 system with GCC version 4.3.0 20080428. Where should I look to fix or go around this problem? Thank you! Chuck Crisler
