class GnuWhich < Formula
  desc "GNU implementation of which utility"
  # Previous homepage is dead. Have linked to the GNU Projects page for now.
  homepage "https://savannah.gnu.org/projects/which/"
  url "https://ftp.gnu.org/gnu/which/which-2.21.tar.gz"
  mirror "https://ftpmirror.gnu.org/which/which-2.21.tar.gz"
  sha256 "f4a245b94124b377d8b49646bf421f9155d36aa7614b6ebf83705d3ffc76eaad"

  bottle do
    cellar :any_skip_relocation
    rebuild 1
    sha256 "651d91432ad81355ea8189f63807543d160607b5b2f87f034627b4c542d2b07a" => :mojave
    sha256 "04999e211cff8d6902f740ee08725b26b34ff1dfda82afc85d5e60243dbac927" => :high_sierra
    sha256 "27e6e35e4915cf7a6c59d3b0033962d1e643c004947dbb0eb97a41d766a8d571" => :sierra
    sha256 "e6b1179b99922a7d49b3dee829c1d31c3fa7269b000799f862361637594d34e1" => :el_capitan
  end

  option "with-default-names", "Do not prepend 'g' to the binary"

  deprecated_option "default-names" => "with-default-names"

  def install
    args = ["--prefix=#{prefix}", "--disable-dependency-tracking"]
    args << "--program-prefix=g" if build.without? "default-names"

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

    if build.without? "default-names"
      (libexec/"gnubin").install_symlink bin/"gwhich" => "which"
      (libexec/"gnuman/man1").install_symlink man1/"gwhich.1" => "which.1"
    end
  end

  test do
    system "#{bin}/gwhich", "gcc"
  end
end