--- Makefile.orig	Sun Oct  6 10:27:36 2002
+++ Makefile	Mon Nov 18 21:08:50 2002
@@ -5,14 +5,14 @@
 # paths to locations where the pnm2ppa binary, the configuration file,
 # and the man page should be installed.   On some systems (like Solaris)
 # the install command requires the syntax BINDIR="-f /usr/local/bin".
-BINDIR="/usr/local/bin"
-CONFDIR="/etc"
-MANDIR="/usr/local/man/man1"
+BINDIR="${PREFIX}/bin"
+CONFDIR="${PREFIX}/etc"
+MANDIR="${PREFIX}/man/man1"
 
 #compiler and linker options:
-CC=gcc
-CFLAGS=-Wall -pedantic -O2  
-LDFLAGS=-lm
+CC?=gcc
+CFLAGS+=-DCONFDIR=\"$(CONFDIR)\"
+LDFLAGS+=-lm
 
 INSTALL=install
 # Install under Linux and other versions with the -b (backup) option