make: make CC and friends optional

This makes the Makefile more compiler independent and increases the flexibility of the makefile. Signed-off-by: Silvio Fricke <[email protected]>
swedishborgie · Jul 15, 2020 · 09dcf2c · 09dcf2c
1 parent 59e9e40
commit 09dcf2c
Showing 1 changed file with 5 additions and 5 deletions.
diff --git a/Makefile b/Makefile
@@ -1,6 +1,6 @@
-CC=gcc
-CFLAGS=-fPIC
-CFLAGS_SHARED=-shared
+CC?=gcc
+CFLAGS?=-fPIC
+CFLAGS_SHARED?=-shared
 OBJ=mma8451.o
 LIBNAME=libmma8451.so
 TESTOBJ=mma8451-test.o
@@ -24,7 +24,7 @@ clean:
 	$(CC) -c -o $@ $< $(CFLAGS)
 
 $(LIBNAME): $(OBJ)
-	gcc -o $@ $^ $(CFLAGS) $(CFLAGS_SHARED)
+	$(CC) -o $@ $^ $(CFLAGS) $(CFLAGS_SHARED)
 
 $(TESTNAME): $(LIBNAME) $(TESTOBJ)
-	gcc -o $@ $^ $(CFLAGS) -L. -lmma8451
+	$(CC) -o $@ $^ $(CFLAGS) -L. -lmma8451