Thank you. I had already found your reference. Which file contains the definition of this built-in function? I suppose that I could write a main() that called an increment function and that function could call this function. What would you need? If I supply just source it would seem that wouldn't be worth much. My co-workers are using v. 4.2.4, though one just built the entire system with 4.3.2 and it did not have this problem. However, I would kind of like to isolate the problem before I upgrade, which is why I asked about the file it is defined in. I greped -inr "__sync_add_and_fetch" /usr/include/*.h and didn't find it. Since that module compiles without a warning, that suggests that the compiler found it. Chuck On Wed, 2008-12-03 at 16:13 -0800, David Daney wrote: > Charles Crisler wrote: > > Hello GCC! I am trying to compile/link/run some code that uses > > sync_add_and_fetch(). > > The real name of this function is __sync_add_and_fetch(). > > See: http://gcc.gnu.org/onlinedocs/gcc-4.3.2/gcc/Atomic-Builtins.html > > > 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 > > If you are compiling all the code in your program, including the 'one of > my libraries', *and* you use the proper function names, then it should work. > > You need to post a small, complete, and runnable testcase for us to be > able to help much more. > > David Daney
