class Libxslt < Formula
  desc "C XSLT library for GNOME"
  homepage "http://xmlsoft.org/XSLT/"
  url "http://xmlsoft.org/sources/libxslt-1.1.33.tar.gz"
  sha256 "8e36605144409df979cab43d835002f63988f3dc94d5d3537c12796db90e38c8"

  bottle do
    cellar :any
    sha256 "a6c28e88fbe71e5f7abbe82a6bbf32f24521db80681e6e5ee5b81d8b76f1ce68" => :mojave
    sha256 "8cb68d6240eec4cd125d4fae45cc9cfe10de65c4c7b848424dd815a3a90749e5" => :high_sierra
    sha256 "8db02fe625d3129ceec2c4e8f9e8972f3307ffee199f6919a5e1af4e50444bec" => :sierra
  end

  head do
    url "https://gitlab.gnome.org/GNOME/libxslt.git"

    depends_on "autoconf" => :build
    depends_on "automake" => :build
    depends_on "libtool" => :build
  end

  keg_only :provided_by_macos

  depends_on "libxml2"

  def install
    system "autoreconf", "-fiv" if build.head?

    # https://bugzilla.gnome.org/show_bug.cgi?id=762967
    inreplace "configure", /PYTHON_LIBS=.*/, 'PYTHON_LIBS="-undefined dynamic_lookup"'

    system "./configure", "--disable-dependency-tracking",
                          "--disable-silent-rules",
                          "--prefix=#{prefix}",
                          "--with-libxml-prefix=#{Formula["libxml2"].opt_prefix}"
    system "make"
    system "make", "install"
  end

  def caveats; <<~EOS
    To allow the nokogiri gem to link against this libxslt run:
      gem install nokogiri -- --with-xslt-dir=#{opt_prefix}
  EOS
  end

  test do
    assert_match version.to_s, shell_output("#{bin}/xslt-config --version")
  end
end