require 'formula' class GnupgIdea < Formula head 'http://www.gnupg.dk/contrib-dk/idea.c.gz', :using => :nounzip sha1 '9b78e20328d35525af7b8a9c1cf081396910e937' end class Gnupg < Formula homepage 'http://www.gnupg.org/' url 'ftp://ftp.gnupg.org/gcrypt/gnupg/gnupg-1.4.12.tar.bz2' sha1 '9b78e20328d35525af7b8a9c1cf081396910e937' option 'idea', 'Build with the patented IDEA cipher' option '8192', 'Build with support for private keys of up to 8192 bits' def cflags cflags = ENV.cflags.to_s cflags += ' -std=gnu89 -fheinous-gnu-extensions' if ENV.compiler == :clang cflags end def install if build.include? 'idea' GnupgIdea.new.brew { (buildpath/'cipher').install Dir['*'] } system 'gunzip', 'cipher/idea.c.gz' end inreplace 'g10/keygen.c', 'max=4096', 'max=8192' if build.include? '8192' system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}", "--disable-asm" system "make", "CFLAGS=#{cflags}" system "make check" # we need to create these directories because the install target has the # dependency order wrong bin.mkpath (libexec+'gnupg').mkpath system "make install" end def caveats if build.include? 'idea' then <<-EOS.undent This build of GnuPG contains support for the patented IDEA cipher. Please read http://www.gnupg.org/faq/why-not-idea.en.html before using this software. You will then need to add the following line to your ~/.gnupg/gpg.conf or ~/.gnupg/options file: load-extension idea EOS end end end