require 'formula' class GnupgIdea < Formula head 'http://www.gnupg.dk/contrib-dk/idea.c.gz', :using => NoUnzipCurlDownloadStrategy md5 '9dc3bc086824a8c7a331f35e09a3e57f' end class Gnupg < Formula homepage 'http://www.gnupg.org/' url 'ftp://ftp.gnupg.org/gcrypt/gnupg/gnupg-1.4.12.tar.bz2' sha1 '9b78e20328d35525af7b8a9c1cf081396910e937' def options [ ["--idea", "Build with (patented) IDEA cipher"], ["--8192", "Build with support for private keys up to 8192 bits"], ] end def install if ENV.compiler == :clang ENV.append 'CFLAGS', '-std=gnu89' ENV.append 'CFLAGS', '-fheinous-gnu-extensions' end if ARGV.include? '--idea' opoo "You are building with support for the patented IDEA cipher." d=Pathname.getwd GnupgIdea.new.brew { (d+'cipher').install Dir['*'] } system 'gunzip', 'cipher/idea.c.gz' end inreplace 'g10/keygen.c', 'max=4096', 'max=8192' if ARGV.include? '--8192' system "./configure", "--disable-dependency-tracking", "--prefix=#{prefix}", "--disable-asm" system "make" 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 ARGV.include? '--idea' <<-EOS.undent Please read http://www.gnupg.org/faq/why-not-idea.en.html before doing so. 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