llvm-custom.rb

require 'formula'

class ClangCustom < Formula
  homepage  'http://llvm.org/'
  url       'http://llvm.org/releases/3.2/clang-3.2.src.tar.gz'
  sha1      'b0515298c4088aa294edc08806bd671f8819f870'

  head      'http://llvm.org/git/clang.git'
end

class LlvmCustom < Formula
  homepage  'http://llvm.org/'
  url       'http://llvm.org/releases/3.2/llvm-3.2.src.tar.gz'
  sha1      '42d139ab4c9f0c539c60f5ac07486e9d30fc1280'

  head      'http://llvm.org/git/llvm.git'

  bottle do
    sha1 '9fddf0bfed060ade86c88b64c40cc4bd5f1f0f2c' => :mountainlion
    sha1 '8d3f3d5090d3bd2cf0c953da105efc63080e948f' => :lion
    sha1 '3ba0beee27d60e80e9790cca9d5e21b2b8169ffe' => :snowleopard
  end

  option :universal

  def install
    ClangCustom.new("clang").brew { clang_dir.install Dir['*'] }

    # check out cling
    system "svn co https://root.cern.ch/svn/root/trunk/interpreter/cling tools/cling"

    # apply patch to build system
    system "cat tools/cling/patches/*.diff | patch -p0"

    args = [
      "--prefix=#{prefix}",
      "--enable-optimized",
      # As of LLVM 3.1, attempting to build ocaml bindings with Homebrew's
      # OCaml 3.12.1 results in errors.
      "--disable-bindings",
    ]

    args << "--enable-targets=host"
    args << "--enable-shared"

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

    # install llvm python bindings
    (share/'llvm/bindings').install buildpath/'bindings/python'

    # install clang tools and bindings
    cd clang_dir do
      system 'make install'
      (share/'clang/tools').install 'tools/scan-build', 'tools/scan-view'
      (share/'clang/bindings').install 'bindings/python'
    end
  end

  def test
    system "#{bin}/llvm-config", "--version"
  end

  def caveats; <<-EOS.undent
    Extra tools and bindings are installed in #{share}/llvm and #{share}/clang.

    If you already have LLVM installed, then "brew upgrade llvm" might not work.
    Instead, try:
        brew rm llvm && brew install llvm
    EOS
  end

  def clang_dir
    buildpath/'tools/clang'
  end
end