class Libtorrent < Formula
  desc "BitTorrent library"
  homepage "https://github.com/rakshasa/libtorrent"
  url "http://rtorrent.net/downloads/libtorrent-0.13.6.tar.gz"
  sha256 "2838a08c96edfd936aff8fbf99ecbb930c2bfca3337dd1482eb5fccdb80d5a04"

  bottle :disable,
    "Cannot be built with Clang so bottle depends on GCC at runtime."

  depends_on "autoconf" => :build
  depends_on "automake" => :build
  depends_on "libtool" => :build
  depends_on "pkg-config" => :build
  depends_on "cppunit" => :build
  depends_on "pkg-config" => :build
  depends_on "openssl"

  # https://github.com/Homebrew/homebrew/issues/24132
  fails_with :clang do
    cause "Causes segfaults at startup/at random."
  end

  def install
    # Currently can't build against libc++; see:
    # https://github.com/homebrew/homebrew/issues/23483
    # https://github.com/rakshasa/libtorrent/issues/47
    ENV.libstdcxx if ENV.compiler == :clang

    system "sh", "autogen.sh"
    system "./configure", "--prefix=#{prefix}",
                          "--disable-debug",
                          "--disable-dependency-tracking",
                          "--with-kqueue",
                          "--enable-ipv6"
    system "make"
    system "make", "install"
  end

  test do
    (testpath/"sample.cc").write <<-EOS.undent
      #include <iostream>
      #include <torrent/torrent.h>
      int main(int argc, char* *argv)
      {
          std::cout << torrent::version();
          return 0;
      }
    EOS

    system ENV.cxx, "-o", "sample", "sample.cc", "-ltorrent"
    system "./sample"
  end
end