FDS Build: Correct fortran compiler

Author: cxp484

Build/Scripts/set_thirdparty_compilers.sh

@@ -96,7 +96,9 @@ elif [[ "$FDS_BUILD_TARGET" == *"osx"* ]]; then
 
    # Check for Fortran compiler (gfortran)
    if [ $set_FC -eq 0 ]; then
-      if command -v gfortran &> /dev/null; then
+      if command -v mpifort &> /dev/null; then
+         FC=mpifort
+      elif command -v gfortran &> /dev/null; then
          FC=gfortran
       else
          echo "Error: gfortran is not available on this system."