diff -Naur libpng-1.2.16.orig/scripts/libpng-config.in libpng-1.2.16/scripts/libpng-config.in
--- libpng-1.2.16.orig/scripts/libpng-config.in	2007-01-04 14:00:25.000000000 -0500
+++ libpng-1.2.16/scripts/libpng-config.in	2007-02-12 10:25:43.000000000 -0500
@@ -8,11 +8,11 @@
 
 # Modeled after libxml-config.
 
-version="@PNGLIB_VERSION@"
-prefix="@prefix@"
-exec_prefix="@exec_prefix@"
-libdir="@libdir@"
-includedir="@includedir@/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@"
+version=`pkg-config --modversion libpng`
+prefix=`pkg-config --variable prefix libpng`
+exec_prefix=`pkg-config --variable exec_prefix libpng`
+libdir=`pkg-config --variable libdir libpng`
+includedir=`pkg-config --variable includedir libpng`
 libs="-lpng@PNGLIB_MAJOR@@PNGLIB_MINOR@"
 all_libs="-lpng@PNGLIB_MAJOR@@PNGLIB_MINOR@ -lz -lm"
 I_opts="-I${includedir}"