Define differently

Makefile

@@ -14,22 +14,30 @@ MOD-DIR = $(BUILD-DIR)/mod
 OBJ-DIR = $(BUILD-DIR)/obj
 TEST-DIR = $(BUILD-DIR)/test
 
+ifeq ($(FC),nvfortran)
+MOD-OUT-OPTION = -module $(MOD-DIR)
+else
+MOD-OUT-OPTION = -J$(MOD-DIR)
+endif
+
+ifeq ($(FC),nvfortran)
+MOD-IN-OPTION = -module $(MOD-DIR)
+else
+MOD-IN-OPTION = -I$(MOD-DIR)
+endif
+
 .PHONY: all test clean
 
 all: $(STATIC)
 
 $(STATIC): $(SRC)
 		mkdir -p $(MOD-DIR) $(OBJ-DIR)
-		ifeq ($(FC),nvfortran)
-			$(FC) $(FFLAGS) -c $(SRC) -module $(MOD-DIR) -o $(OBJ-DIR)/$(FILENAME).o
-		else
-			$(FC) $(FFLAGS) -c $(SRC) -J$(MOD-DIR) -o $(OBJ-DIR)/$(FILENAME).o
-		endif
+		$(FC) $(FFLAGS) -c $(SRC) $(MOD-OUT-OPTION) -o $(OBJ-DIR)/$(FILENAME).o
 		$(AR) $(ARFLAGS) $(STATIC) $(OBJ-DIR)/$(FILENAME).o
 
 test: $(TEST-SRC) $(STATIC)
 		mkdir -p $(TEST-DIR)
-		$(FC) $(FFLAGS) $(TEST-SRC) -I$(MOD-DIR) -o $(TEST-DIR)/test.out $(STATIC)
+		$(FC) $(FFLAGS) $(TEST-SRC) $(MOD-IN-OPTION) -o $(TEST-DIR)/test.out $(STATIC)
 		$(TEST-DIR)/test.out
 
 clean: