--- libpng/scripts/makefile.macosx	Sun Sep 26 18:18:04 2004
+++ libpng/scripts/makefile.macosx.orig	Thu Oct  3 13:32:34 2002
@@ -6,7 +6,7 @@
 # For conditions of distribution and use, see copyright notice in png.h
 
 # where make install puts libpng.a and png.h
-prefix=/usr/local
+prefix=PREFIX

 # Where the zlib library and include files are located
 #ZLIBLIB=/usr/local/lib
