Merge pull request #2004 from billsacks/fix_gfortran_detection

Check Fortran compiler name instead of C compiler name

Author: jedwards4b

CMakeLists.txt

@@ -244,7 +244,7 @@ if (PIO_ENABLE_COVERAGE)
 endif ()
 
 # Allow argument mismatch in gfortran versions > 10 for mpi library compatibility
-if (CMAKE_C_COMPILER_NAME STREQUAL "GNU")
+if (CMAKE_Fortran_COMPILER_NAME STREQUAL "GNU")
   if ("${CMAKE_Fortran_COMPILER_VERSION}" VERSION_LESS 10)
     message (WARNING "gfortran version is ${CMAKE_Fortran_COMPILER_VERSION}")
   else()