OptiPNG 0.6.3

OptiPNG is a PNG optimizer that recompresses image files to a smaller
size, without losing any information.

http://optipng.sourceforge.net/

Formula/optipng.rb

@@ -0,0 +1,14 @@
+require 'formula'
+
+class Optipng <Formula
+  url 'http://downloads.sourceforge.net/optipng/optipng-0.6.3.tar.gz'
+  homepage 'http://optipng.sourceforge.net/'
+  md5 '6cef405197a878acff4c6216cf38e871'
+
+  def install
+    inreplace 'src/scripts/gcc.mak.in', '/usr/local', prefix
+    inreplace 'src/scripts/gcc.mak.in', 'mandir=$(prefix)/man', 'mandir=$(prefix)/share/man'
+    system "./configure", "-with-system-zlib"
+    system "make install"
+  end
+end