--- ./Makefile.orig	2013-04-29 11:51:10.242627983 +0200
+++ ./Makefile	2013-04-29 11:51:26.370242683 +0200
@@ -1,16 +1,16 @@
-GCC=gcc
-CCFLAGS=-Wall -pedantic -std=c99 -D_BSD_SOURCE
-LDFLAGS=-lImlib2
+CC?=gcc
+CFLAGS+=-Wall -pedantic -std=c99 -D_BSD_SOURCE
+LDFLAGS+=-lImlib2
 PROG=icat
 MODS=icat.o
 
 all: $(PROG)
 
 %.o: %.c
-	$(GCC) -c $(CCFLAGS) -o $@ $<
+	$(CC) -c $(CFLAGS) -o $@ $<
 
 $(PROG): $(MODS)
-	$(GCC) -o $@ $< $(LDFLAGS)
+	$(CC) -o $@ $< $(LDFLAGS)
 
 clean:
 	-rm -f $(PROG) $(MODS)