On Tue, Mar 07, 2006 at 12:34:05PM -0500, Diego Novillo wrote: > #0 0x00000000 in ?? () > #1 0x0804d112 in find_unit_1 (n=6, do_create=1)
The problem here is a combination of factors: static linking and weak symbol references via gthr.h. The direct cause is that pthread_mutex_trylock isn't pulled from the libpthread.a archive becuase there's only a weak reference to it. Which means that we got some, but not all, of the thread symbols that we need. Essentially, the gthr.h weak symbol scheme only really works for shared libraries. The only sure-fire fix I can think of is to actually build two static versions of libgfortran -- one threaded and one not threaded. I'm not sure this is worth the effort, really. I'd be more inclined to put a couple of checks in such that the static libgfortran only runs non-threaded, and force people to use shared libgfortran for OpenMP. r~
