require 'formula' class Optipng < Formula homepage 'http://optipng.sourceforge.net/' head 'http://optipng.hg.sourceforge.net/hgweb/optipng/optipng' url 'https://downloads.sourceforge.net/project/optipng/OptiPNG/optipng-0.7.4/optipng-0.7.4.tar.gz' sha1 'dcde17501cfb7a425b6cc23cfed482bbfd4867bb' def install system "./configure", "--with-system-zlib", "--prefix=#{prefix}", "--mandir=#{man}" system "make install" end end