gcc/testsuite/gfortran.dg/openmp-define-3.f90

! { dg-options "-cpp -fopenmp" }
! { dg-do preprocess }
! { dg-require-effective-target fopenmp }

#ifndef _OPENMP
# error _OPENMP not defined
#endif

#if _OPENMP != 201307
# error _OPENMP defined to wrong value
#endif