require 'formula' class Webp < Formula homepage 'http://code.google.com/speed/webp/' url 'http://webp.googlecode.com/files/libwebp-0.3.0.tar.gz' sha1 'a20acf2f180d3eae77e24a63371b01fa412fa2f1' depends_on :libpng depends_on 'jpeg' => :recommended def install system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}" system "make install" end test do system "#{bin}/cwebp", \ "/System/Library/Frameworks/SecurityInterface.framework/Versions/A/Resources/Key_Large.png", \ "-o", "webp_test.png" system "#{bin}/dwebp", "webp_test.png", "-o", "webp_test.webp" end end