Dear all, is there a reason that one should not be able to statically link a Fortran binary that has been compiled with -fopenmp?
A tiny example seems to fail for me with all gfortran versions: program p !$omp parallel !$omp end parallel end % gfortran -fopenmp foo.f90 -g -static % OMP_NUM_THREADS=1 ./a.out Program received signal SIGSEGV: Segmentation fault - invalid memory reference. [...] Running under gdb: Program received signal SIGSEGV, Segmentation fault. 0x0000000000000000 in ?? () (gdb) bt #0 0x0000000000000000 in ?? () #1 0x0000000000405198 in __gthread_mutex_destroy (__mutex=0x72ced8) at ../libgcc/gthr-default.h:739 #2 destroy_unit_mutex (u=0x72ce00) at ../../../libgfortran/io/unit.c:252 #3 close_unit_1 (u=0x72ce00, locked=locked@entry=1) at ../../../libgfortran/io/unit.c:743 #4 0x0000000000405202 in _gfortrani_close_units () at ../../../libgfortran/io/unit.c:780 #5 0x000000000044c53c in __libc_csu_fini () at elf-init.c:100 #6 0x0000000000452ef0 in __run_exit_handlers (status=0, listp=0x720630 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true, run_dtors=run_dtors@entry=true) at exit.c:83 #7 0x0000000000452f4a in exit (status=<optimized out>) at exit.c:105 #8 0x000000000044bdc6 in __libc_start_main (main=0x4030bd <main>, argc=1, argv=0x7fffffffc348, init=0x44c470 <__libc_csu_init>, fini=0x44c510 <__libc_csu_fini>, rtld_fini=0x0, stack_end=0x7fffffffc338) at ../csu/libc-start.c:342 #9 0x0000000000402fba in _start () at ../sysdeps/x86_64/start.S:120 I suspect either a locking issue for unit_root in unit.c, or maybe bad initialization of it, but haven't stared long enough at the code. According to git blame almost all related references date back to 2005. Shall I open a PR against libfortran? Or is there something I am missing? Thanks, Harald