http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55891
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2013-01-07 11:49:53 UTC --- I see this behavior with gcc 4.8 on x86_64-apple-darwin10. It happens even if the -fPIC options are removed (isn't it the default on darwin?). I recover the expected behavior if I add -c when compiling mod.f90, but I cannot say more since I don't understand what is intended.