Prevented CMAKE_Fortran_COMPILER_VERSION from becoming undefined

Author: raullaasner

CMakeLists.txt

@@ -42,6 +42,9 @@ endif()
 
 if (CMAKE_VERSION VERSION_GREATER 3.2.3) 
   # Detect Fortran compiler version directly
+  set(CMAKE_Fortran_COMPILER_VERSION ${CMAKE_Fortran_COMPILER_VERSION}
+    CACHE STRING "")
+  mark_as_advanced(FORCE CMAKE_Fortran_COMPILER_VERSION)
   if(gfortran_compiler AND (CMAKE_Fortran_COMPILER_VERSION VERSION_GREATER 5.0.0))
     set(opencoarrays_aware_compiler true)
     add_definitions(-DPREFIX_NAME=_gfortran_caf_)