diff -ur wmcalendar-0.5.0/Src/Makefile /wmcalendar-0.5.0/Src/Makefile
--- wmcalendar-0.5.0/Src/Makefile	2003-07-15 17:19:26.000000000 +0200
+++ /wmcalendar-0.5.0/Src/Makefile	2003-09-17 08:36:48.000000000 +0200
@@ -1,4 +1,7 @@
-CC     = gcc
+ifndef CC
+	CC = gcc
+endif
+	
 INCLUDES  = `pkg-config --cflags gtk+-2.0` -I. 
 LFLAGS = `pkg-config --libs gtk+-2.0`
 
@@ -6,7 +9,7 @@
 #INCLUDES = `gtk12-config --cflags` -I. 
 #LFLAGS = `gtk12-config --libs`
 X11BASE = /usr/X11R6
-CFLAGS =  $(INCLUDES) -DICON_TYPE=$(ICON_TYPE)
+MY_CFLAGS =  $(CFLAGS) $(INCLUDES) -DICON_TYPE=$(ICON_TYPE)
 INCDIR = -I$(X11BASE)/include/X11 -I$(X11BASE)/include -I$/usr/include -I$/usr/local/include
 DESTDIR= /usr/local
 LIBDIR = -L/usr/lib -L${X11BASE}/lib -L/usr/local/lib
@@ -24,7 +27,7 @@
 		calendar.o
 
 .c.o:
-	$(CC) $(CFLAGS) -D`uname -s` -DHAVE_SYS_TIME_H -c $< -o $*.o $(INCDIR)
+	$(CC) $(MY_CFLAGS) -D`uname -s` -DHAVE_SYS_TIME_H -c $< -o $*.o $(INCDIR)
 
 
 all:	wmCalendar.o wmCalendar