--- ./Makefile.orig	2012-05-01 18:11:56.000000000 +0200
+++ ./Makefile	2012-05-01 18:15:04.000000000 +0200
@@ -1,18 +1,19 @@
 # Makefile for gladtex
 
-BINPATH = /usr/local/bin
-MANPATH = /usr/local/share/man/man1
+BINPATH?= /usr/local/bin
+MANPATH?= /usr/local/share/man/man1
 
-CC = gcc -O2 -DGIF
-LIB = -lm -lz -lgif -lpng
+CC ?= gcc
+CFLAGS+= -DGIF ${INCPATH}
+LIB = -lm -lz ${LIBPATH} -lgif -lpng
 OBJ = eqn2img.o
 POD2MAN = pod2man
 
 all:		${OBJ} gladtex.1
-		${CC} -o eqn2img ${LIB} ${OBJ}
+		${CC} ${CFLAGS} -o eqn2img ${LIB} ${OBJ}
 
 eqn2img.o:	eqn2img.c
-		${CC} -c eqn2img.c
+		${CC} ${CFLAGS} -c eqn2img.c
 
 gladtex.1:	gladtex.pod
 		${POD2MAN} -c "User Commands" -r "gladtex 1.2" gladtex.pod > gladtex.1