require 'formula' class Jam < Formula url 'ftp://ftp.perforce.com/jam/jam-2.5.zip' homepage 'http://www.perforce.com/jam/jam.html' md5 'f92caadb62fe4cb0b152eff508c9d450' def install # Why zip up as read-only? system "chmod a+w *" inreplace "Makefile" do |s| s.remove_make_var! ['CC', 'CFLAGS'] end system "make" bin.install ["bin.macosx/jam", "bin.macosx/mkjambase"] end end