Using response files on Mac is incompatible (and unnecessary) with Ninja

Author: martin-frbg

CMakeLists.txt

@@ -310,8 +310,10 @@ endif()
 
 # Fix "Argument list too long" for macOS - mostly seen with older OS versions on POWERPC or Intel CPUs 
 if(APPLE)
-  # Use response files
-  set(CMAKE_C_USE_RESPONSE_FILE_FOR_OBJECTS 1)
+  # Use response files to get around the ARG_MAX limit, unless using the Ninja generator
+  if("${CMAKE_GENERATOR}" MATCHES ".*Makefiles")
+    set(CMAKE_C_USE_RESPONSE_FILE_FOR_OBJECTS 1)
+  endif()
   # Always build static library first
   if(BUILD_STATIC_LIBS)
     set(STATIC_PATH "${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/lib${OpenBLAS_LIBNAME}.a")
@@ -332,8 +334,10 @@ if(APPLE)
     set(OMP_LIB "")
   endif()
   if(NOT NOFORTRAN)
-    set(CMAKE_Fortran_USE_RESPONSE_FILE_FOR_OBJECTS 1)
-    set(CMAKE_Fortran_CREATE_STATIC_LIBRARY ${CREATE_STATIC_LIBRARY_COMMAND})
+    if("${CMAKE_GENERATOR}" MATCHES ".*Makefiles")
+      set(CMAKE_Fortran_USE_RESPONSE_FILE_FOR_OBJECTS 1)
+    endif()
+	set(CMAKE_Fortran_CREATE_STATIC_LIBRARY ${CREATE_STATIC_LIBRARY_COMMAND})
     if(BUILD_SHARED_LIBS)
       set(CMAKE_Fortran_CREATE_SHARED_LIBRARY
 	"sh -c 'echo \"\" | ${CMAKE_Fortran_COMPILER} -o dummy.o -c -x f95-cpp-input - '"