configury: fix Fortran common alignment detection

Do not try to detect Fortran common alignment if
no Fortran compiler is available.

Ref. #13257

:bot:notacherrypick

Signed-off-by: Gilles Gouaillardet <[email protected]>

Author: ggouaillardet

config/ompi_setup_mpi_fortran.m4

@@ -142,7 +142,9 @@ AC_DEFUN([OMPI_SETUP_MPI_FORTRAN],[
     OMPI_FORTRAN_IKINDS=
     OMPI_FORTRAN_RKINDS=
     OMPI_FORTRAN_CKINDS=
-    OMPI_FORTRAN_GET_COMMON_ALIGNMENT([OMPI_FORTRAN_COMMON_ALIGNMENT])
+    AS_IF([test $ompi_fortran_happy -eq 1],
+          [OMPI_FORTRAN_GET_COMMON_ALIGNMENT([OMPI_FORTRAN_COMMON_ALIGNMENT])],
+          [OMPI_FORTRAN_COMMON_ALIGNMENT=0])
     AC_SUBST([OMPI_FORTRAN_COMMON_ALIGNMENT])
 
     # We want to set the #define's for all of these, so invoke the macros