[Bug libgomp/60670] omp.h may differ between multilibs

[fxcoudert at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60670

--- Comment #13 from Francois-Xavier Coudert <fxcoudert at gcc dot gnu.org> ---
Showing how the module files are not found when a non default multilib is
chosen:

$ gfortran a.f90 -fopenmp     
$ gfortran a.f90 -fopenmp -m32
a.f90:1:6:

   use omp_lib
      1
Fatal Error: Can't open module file ‘omp_lib.mod’ for reading at (1): No such
file or directory
compilation terminated.
$ cat a.f90 
  use omp_lib
  end