class Make < Formula
  desc "Utility for directing compilation"
  homepage "https://www.gnu.org/software/make/"
  url "https://ftp.gnu.org/gnu/make/make-4.3.tar.lz"
  mirror "https://ftpmirror.gnu.org/make/make-4.3.tar.lz"
  sha256 "de1a441c4edf952521db30bfca80baae86a0ff1acd0a00402999344f04c45e82"
  license "GPL-3.0-only"

  bottle do
    rebuild 1
    sha256 arm64_ventura:  "0d6dcfb8e0df7c3c0ff82dbbc56ae7a9b764dd8c046d38902b177437a39e5e28"
    sha256 arm64_monterey: "1ba1c273aa4b9c0a2c927c8bdb8a48146ebd8a14dfc8ab6608fdc5cc792eaba1"
    sha256 arm64_big_sur:  "eab3fbc3688aecec0fe90b8d0fe3cb7beb84ed773ba0411fc2f855c66deaf882"
    sha256 monterey:       "4349e2c715f78210c29b4c35112e8343402dad5c1e44fe8d6272d9aace6bbdf7"
    sha256 big_sur:        "2019ba646e4471d42e09c28a0992c59dd82e292bf8275b0b3bfcce3220ef9c1b"
    sha256 catalina:       "39fc5ebff5ff708c2e3eea597b9f2eb79b910a122d30c3ac9bb93ebe313f030c"
    sha256 mojave:         "0c0a08eef68bcd78b0345f5f57a6efffcc7be877bcb3b803f39ac8916b882477"
    sha256 high_sierra:    "429177235322c3209e1657bea36364cd84222075b636939f6ed93a1cd04aeb21"
    sha256 x86_64_linux:   "dd17cdf0a93ef30324250694ea5baec67c037e1d71c1cab8fe6432d66758fd62"
  end

  conflicts_with "remake", because: "both install texinfo files for make"

  def install
    args = %W[
      --disable-dependency-tracking
      --prefix=#{prefix}
    ]

    args << "--program-prefix=g" if OS.mac?
    system "./configure", *args
    system "make", "install"

    if OS.mac?
      (libexec/"gnubin").install_symlink bin/"gmake" =>"make"
      (libexec/"gnuman/man1").install_symlink man1/"gmake.1" => "make.1"
    end

    libexec.install_symlink "gnuman" => "man"
  end

  def caveats
    on_macos do
      <<~EOS
        GNU "make" has been installed as "gmake".
        If you need to use it as "make", you can add a "gnubin" directory
        to your PATH from your bashrc like:

            PATH="#{opt_libexec}/gnubin:$PATH"
      EOS
    end
  end

  test do
    (testpath/"Makefile").write <<~EOS
      default:
      \t@echo Homebrew
    EOS

    if OS.mac?
      assert_equal "Homebrew\n", shell_output("#{bin}/gmake")
      assert_equal "Homebrew\n", shell_output("#{opt_libexec}/gnubin/make")
    else
      assert_equal "Homebrew\n", shell_output("#{bin}/make")
    end
  end
end