Hi everybody, I recently compiled gcc-4.2.0 latest on my MacBook Pro (Mac OS X 10.4.8). I got these messages during make: ranlib: file: .libs/libgomp.a(mutex.o) has no symbols ranlib -c .libs/libgomp.a ranlib: file: .libs/libgomp.a(mutex.o) has no symbols creating libgomp.la However, there was no errors, and I did "make install". Now I can compile and run openmp applications without any errors. But, when I try compiling an application which uses a lot of libraries like atlas, fftw, freeglut, openmp, it fails during runtime. The debugging information is like that: Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: KERN_PROTECTION_FAILURE at address: 0x00000008 [Switching to process 1193 thread 0xf03] gomp_resolve_num_threads (specified=0) at ../../../libgomp/parallel.c:48 48 if (gomp_thread()->ts.team && !gomp_nest_var) I'd compiled atlas,freeglut,fftw using gcc-4.0.1. Can this cause this kind of problems? Thanks a lot... haris