class Libgcrypt < Formula
  desc "Cryptographic library based on the code from GnuPG"
  homepage "https://directory.fsf.org/wiki/Libgcrypt"
  url "https://gnupg.org/ftp/gcrypt/libgcrypt/libgcrypt-1.6.5.tar.bz2"
  mirror "https://www.mirrorservice.org/sites/ftp.gnupg.org/gcrypt/libgcrypt/libgcrypt-1.6.5.tar.bz2"
  sha256 "f49ebc5842d455ae7019def33eb5a014a0f07a2a8353dc3aa50a76fd1dafa924"

  bottle do
    cellar :any
    sha256 "20f15a1fc7316033c35c11f9b18af95ed0e716b5fb588d5756c78c2feeaf01a3" => :el_capitan
    sha256 "bfc5b81aa344074433ccc84f20949d96be15a6fe8a7126330da2a90bd38f03cf" => :yosemite
    sha256 "cd65e7d1c4c3820f345fc502a1fd893a12334ee212dd4b85934b4ce16a3232bc" => :mavericks
  end

  option :universal

  depends_on "libgpg-error"

  resource "config.h.ed" do
    url "https://raw.githubusercontent.com/Homebrew/patches/ec8d133/libgcrypt/config.h.ed"
    version "113198"
    sha256 "d02340651b18090f3df9eed47a4d84bed703103131378e1e493c26d7d0c7aab1"
  end

  def install
    ENV.universal_binary if build.universal?

    system "./configure", "--disable-dependency-tracking",
                          "--disable-silent-rules",
                          "--prefix=#{prefix}",
                          "--disable-asm",
                          "--with-libgpg-error-prefix=#{Formula["libgpg-error"].opt_prefix}"

    if build.universal?
      buildpath.install resource("config.h.ed")
      system "ed -s - config.h <config.h.ed"
    end

    # Parallel builds work, but only when run as separate steps
    system "make"
    system "make", "install"
    # Make check currently dies on El Capitan
    # https://github.com/Homebrew/homebrew/issues/41599
    # https://bugs.gnupg.org/gnupg/issue2056
    # This check should be above make install again when fixed.
    system "make", "check"
  end

  test do
    touch "testing"
    output = shell_output("#{bin}/hmac256 \"testing\" testing")
    assert_match "0e824ce7c056c82ba63cc40cffa60d3195b5bb5feccc999a47724cc19211aef6", output
  end
end