Filter out FFLAGS not supported by flang-new

cmake/system.cmake

@@ -616,8 +616,11 @@ if (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
   endforeach ()
 endif ()
 
-if ("${F_COMPILER}" STREQUAL "NAG" OR "${F_COMPILER}" STREQUAL "CRAY")
+if ("${F_COMPILER}" STREQUAL "NAG" OR "${F_COMPILER}" STREQUAL "CRAY" OR "${F_COMPILER}" STREQUAL "FLANGNEW")
   set(FILTER_FLAGS "-msse3;-mssse3;-msse4.1;-mavx;-mavx2,-mskylake-avx512")
+  if ("${F_COMPILER}" STREQUAL "FLANGNEW")
+    set(FILTER_FLAGS "${FILTER_FLAGS};-m32;-m64")
+  endif ()
   foreach (FILTER_FLAG ${FILTER_FLAGS})
     string(REPLACE ${FILTER_FLAG} "" LAPACK_FFLAGS ${LAPACK_FFLAGS})
     string(REPLACE ${FILTER_FLAG} "" LAPACK_FPFLAGS ${LAPACK_FPFLAGS})