diff -Naur slim-1.3.1/Makefile slim-1.3.1.tpg/Makefile
--- slim-1.3.1/Makefile	2008-09-26 00:54:15.000000000 +0000
+++ slim-1.3.1.tpg/Makefile	2008-11-15 21:58:13.000000000 +0000
@@ -5,7 +5,7 @@
 #######################################################
 CXX=/usr/bin/g++
 CC=/usr/bin/gcc
-CFLAGS=-Wall -I. -I/usr/include/freetype2 -I/usr/include/freetype2/config -I/usr/include/libpng12 -I/usr/include
+CFLAGS=$(OPT) -Wall -I. -I/usr/include/freetype2 -I/usr/include/freetype2/config -I/usr/include/libpng12 -I/usr/include
 CXXFLAGS=$(CFLAGS)
 LDFLAGS=-lXft -lX11 -lfreetype -lXrender -lfontconfig -lpng12 -lz -lm -lcrypt -lXmu -lpng -ljpeg
 CUSTOM=-DHAVE_SHADOW
@@ -13,9 +13,9 @@
 LDFLAGS+= -lpam
 CUSTOM+= -DUSE_PAM
 endif
-PREFIX=/usr
-CFGDIR=/etc
-MANDIR=/usr/man
+PREFIX?=/usr
+CFGDIR?=/etc/X11/slim
+MANDIR?=/usr/share/man
 DESTDIR=
 #######################################################