$OpenBSD: patch-PNG_Makefile_PL,v 1.4 2010/09/02 11:53:32 sthen Exp $
--- PNG/Makefile.PL.orig	Sun Nov 23 08:57:09 2008
+++ PNG/Makefile.PL	Thu Sep  2 12:10:16 2010
@@ -16,7 +16,7 @@ foreach my $file (qw(zlib/Makefile.PL libpng/Makefile.
  }
 
 if ($Tk::MMtry::VERSION ge '4.007' &&
-    try_run("config/has_png.c",['-I/usr/local/include'],['-lpng -lz -lm']))
+    try_run("config/has_png.c",['-I${LOCALBASE}/include/libpng'],['-L${LOCALBASE}/lib -lpng -lz -lm']))
  {
   Tk::MMutil::TkExtMakefile(
        NAME         => 'Tk::PNG',
@@ -24,8 +24,8 @@ if ($Tk::MMtry::VERSION ge '4.007' &&
        XS_VERSION   => $Tk::Config::VERSION,
        dist         => { COMPRESS => 'gzip -f9', SUFFIX => '.gz' },
        OBJECT       => '$(O_FILES)',
-       INC          => '-I/usr/local/include',
-       LIBS         => ['-lpng -lz -lm'],
+       INC          => '-I${LOCALBASE}/include/libpng',
+       LIBS         => ['-L${LOCALBASE}/lib -lpng -lz -lm'],
      );
  }
 else
