Merge branch 'xylar/mpas-framework/fix-cray-cray-openmp' (PR E3SM-Pro…

…ject#6193)

Fix OpenMP support for MPAS standalone builds with cray-cray

A -fopenmp (rather than a -homp) flag seems to be needed for OpenMP on
Frontier.

For MPAS component standalone builds only -- does not impact E3SM

[BFB]

components/mpas-framework/Makefile

@@ -462,8 +462,8 @@ cray-cray:
 	"CFLAGS_DEBUG = -O0 -g" \
 	"CXXFLAGS_DEBUG = -O0 -g" \
 	"LDFLAGS_DEBUG = -O0 -g -Ktrap=divz,fp,inv,ovf" \
-	"FFLAGS_OMP = -h omp" \
-	"CFLAGS_OMP = -h omp" \
+	"FFLAGS_OMP = -homp -fopenmp" \
+	"CFLAGS_OMP = -homp -fopenmp" \
 	"PICFLAG = -f pic" \
 	"BUILD_TARGET = $(@)" \
 	"CORE = $(CORE)" \