Don't hardcode GCC in Makefile.

Author: casept

Makefile

@@ -6,7 +6,7 @@ clean:
 # CFLAGS=-Wall
 
 libbattery.o: libbattery.c battery.h
-	gcc $(CFLAGS) libbattery.c -o libbattery.o
+	$(CC) $(CFLAGS) libbattery.c -o libbattery.o
 
 battery: battery.c libbattery.c battery.h
-	gcc $(CFLAGS) battery.c libbattery.c -lm -o battery
+	$(CC) $(CFLAGS) battery.c libbattery.c -lm -o battery