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class GamePortingToolkitCompiler < Formula
  version "0.1"
  desc "Compiler for Apple Game Porting Toolkit"
  homepage "https://developer.apple.com/"
  url "https://media.codeweavers.com/pub/crossover/source/crossover-sources-22.1.1.tar.gz", using: :nounzip
  sha256 "cdfe282ce33788bd4f969c8bfb1d3e2de060eb6c296fa1c3cdf4e4690b8b1831"
  # license ""
  
  depends_on "cmake" => :build
  depends_on "ninja" => :build
  
  keg_only :provided_by_macos
  
  def install
    # The 22.1.1 tarball contains an empty sources/freetype directory, which confuses Homebrew.
    # So we extract it ourself. This also lets us restrict extraction to just the clang directory.
    system "tar", "-xf", "crossover-sources-22.1.1.tar.gz", "--include=sources/clang/*", "--strip-components=2"
    
    mkdir "clang-build" do
      # Build an x86_64-native clang.
      system "cmake", "-G", "Ninja",
                      "-DCMAKE_VERBOSE_MAKEFILE=#{verbose? ? "On" : "Off"}",
                      "-DCMAKE_INSTALL_PREFIX=#{prefix}",
                      "-DCMAKE_MAKE_PROGRAM=ninja",
                      "-DCMAKE_BUILD_TYPE=Release",
                      "-DCMAKE_VERBOSE_MAKEFILE=On",
                      "-DCMAKE_OSX_ARCHITECTURES=x86_64",
                      "-DLLVM_TARGETS_TO_BUILD=X86",
                      "-DLLVM_NATIVE_ARCH=X86",
                      "-DLLVM_HOST_TRIPLE=x86_64-apple-darwin",
                      "-DLLVM_INSTALL_TOOLCHAIN_ONLY=On",
                      "-DLLVM_ENABLE_PROJECTS=clang",
                      buildpath/"llvm"
                      
        if verbose?
          system "ninja", "-v", "install"
        else
          system "ninja", "install"
        end
      end
      
    # Sometimes Wine tries to build with GCC even if it can find clang.
    bin.install_symlink "clang" => "gcc"
  end
end