Merge 'origin/jayeshkrishna/homme/add_pnetcdf_for_standalone_bfbtests' (PR #6561)

Adding support for the PnetCDF library in HOMME for the
BFB tests on Anvil and Chrysalis.

Also see related PR #6552

[BFB]

Author: oksanaguba

components/homme/cmake/machineFiles/anvil-bfb.cmake

@@ -20,7 +20,14 @@ ENDIF()
 # Set kokkos arch, to get correct avx flags
 SET (Kokkos_ARCH_BDW ON CACHE BOOL "")
 
-SET (WITH_PNETCDF FALSE CACHE FILEPATH "")
+EXECUTE_PROCESS(COMMAND pnetcdf-config --prefix
+  RESULT_VARIABLE PNCCONFIG_RESULT
+  OUTPUT_VARIABLE PNCCONFIG_OUTPUT
+  ERROR_VARIABLE  PNCCONFIG_ERROR
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+SET (PnetCDF_PATH "${PNCCONFIG_OUTPUT}" CACHE STRING "")
+
 #
 # anvil module system doesn't set environment variables, but will put
 # nc-config in our path.  anvil seperates C and Fortran libraries,

components/homme/cmake/machineFiles/chrysalis-bfb.cmake

@@ -20,7 +20,13 @@ SET (USE_MPI_OPTIONS "-K --cpu_bind=cores" CACHE STRING "")
 # Set kokkos arch, to get correct avx flags
 SET (Kokkos_ARCH_ZEN2 ON CACHE BOOL "")
 
-SET (WITH_PNETCDF FALSE CACHE FILEPATH "")
+EXECUTE_PROCESS(COMMAND pnetcdf-config --prefix
+  RESULT_VARIABLE PNCCONFIG_RESULT
+  OUTPUT_VARIABLE PNCCONFIG_OUTPUT
+  ERROR_VARIABLE  PNCCONFIG_ERROR
+  OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+SET (PnetCDF_PATH "${PNCCONFIG_OUTPUT}" CACHE STRING "")
 
 EXECUTE_PROCESS(COMMAND nf-config --prefix
   RESULT_VARIABLE NFCONFIG_RESULT