[Bug fortran/124484] Coarray test error on some older glibc due to missing -lrt

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124484

--- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Ah, except if the only reference to librt symbols is from -lcaf_shmem, then
-lrt should be after -lcaf_shmem.