Index: Makefile
diff -u Makefile.orig Makefile
--- Makefile.orig	Thu Aug 11 05:58:26 2005
+++ Makefile	Wed Nov  9 02:42:46 2005
@@ -1,13 +1,20 @@
-all: gkfreq.so
+PREFIX?=	/usr/X11R6
+PLUGIN_DIR?=	${PREFIX}/libexec/gkrellm2/plugins
+
+GKRELLM_INCLUDE=-I${PREFIX}/include
+
+GTK_CONFIG=	pkg-config gtk+-2.0
+GTK_CFLAGS=	`${GTK_CONFIG} --cflags`
 
-gkfreq.o: gkfreq.c
-	gcc -fPIC -O2 -Wall `pkg-config gtk+-2.0 --cflags` -c gkfreq.c
+CFLAGS+=	-Wall -fPIC ${GTK_CFLAGS} ${GKRELLM_INCLUDE}
+
+all: gkfreq.so
 
 gkfreq.so: gkfreq.o
-	gcc -shared -Wall -o gkfreq.so gkfreq.o
+	${CC} -shared -Wall -o gkfreq.so gkfreq.o
 
 clean:
 	rm -rf *.o *.so
 
 install:
-	cp gkfreq.so ~/.gkrellm2/plugins/
+	${INSTALL} -s gkfreq.so ${PLUGIN_DIR}