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require 'formula'

class Ruby < Formula
  homepage 'http://www.ruby-lang.org/en/'
  url 'http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p194.tar.gz'
  sha256 '46e2fa80be7efed51bd9cdc529d1fe22ebc7567ee0f91db4ab855438cf4bd8bb'

  head 'http://svn.ruby-lang.org/repos/ruby/trunk/'

  depends_on :autoconf if build.head?
  depends_on 'pkg-config' => :build
  depends_on 'readline'
  depends_on 'gdbm'
  depends_on 'libyaml'

  option :universal
  option 'with-suffix', 'Suffix commands with "19"'
  option 'with-doc', 'Install documentation'

  fails_with :llvm do
    build 2326
  end

  # Stripping breaks dynamic linking
  skip_clean :all

  def install
    system "autoconf" if build.head?

    args = ["--prefix=#{prefix}",
            "--enable-shared"]

    args << "--program-suffix=19" if build.include? "with-suffix"
    args << "--with-arch=x86_64,i386" if build.universal?

    # Put gem, site and vendor folders in the HOMEBREW_PREFIX
    ruby_lib = HOMEBREW_PREFIX/"lib/ruby"
    (ruby_lib/'site_ruby').mkpath
    (ruby_lib/'vendor_ruby').mkpath
    (ruby_lib/'gems').mkpath

    (lib/'ruby').install_symlink ruby_lib/'site_ruby',
                                 ruby_lib/'vendor_ruby',
                                 ruby_lib/'gems'

    system "./configure", *args
    system "make"
    system "make install"
    system "make install-doc" if build.include? "with-doc"

  end

  def caveats; <<-EOS.undent
    NOTE: By default, gem installed binaries will be placed into:
      #{bin}

    You may want to add this to your PATH.
    EOS
  end
end