Sphinx homebrew recipe with libstemmer support

sphinx.rb

require 'formula'

class Sphinx < Formula
  url 'http://sphinxsearch.com/downloads/sphinx-0.9.9.tar.gz'
  homepage 'http://www.sphinxsearch.com'
  md5 '7b9b618cb9b378f949bb1b91ddcc4f54'
  head 'http://sphinxsearch.googlecode.com/svn/trunk/'

  fails_with_llvm "fails with: ld: rel32 out of range in _GetPrivateProfileString from /usr/lib/libodbc.a(SQLGetPrivateProfileString.o)"

  def install
    system "curl -O http://snowball.tartarus.org/dist/libstemmer_c.tgz"
    system "tar zxvf libstemmer_c.tgz"

    args = ["--prefix=#{prefix}", "--disable-debug", "--disable-dependency-tracking", "--with-libstemmer"]
    # configure script won't auto-select PostgreSQL
    args << "--with-pgsql" if `/usr/bin/which pg_config`.size > 0
    args << "--without-mysql" if `/usr/bin/which mysql`.size <= 0

    system "./configure", *args
    system "make install"
  end

  def caveats
    <<-EOS.undent
    Sphinx depends on either MySQL or PostreSQL as a datasource.

    You can install these with Homebrew with:
      brew install mysql
        For MySQL server.

      brew install mysql-connector-c
        For MySQL client libraries only.

      brew install postgresql
        For PostgreSQL server.

    We don't install these for you when you install this formula, as
    we don't know which datasource you intend to use.
    EOS
  end
end