homebrew-core/Formula/gmp.rb

require 'formula'

class Gmp <Formula
  url 'ftp://ftp.gnu.org/gnu/gmp/gmp-4.3.1.tar.bz2'
  homepage 'http://gmplib.org/'
  sha1 'acbd1edc61230b1457e9742136994110e4f381b2'

  def options
    [
      ["--skip-check", "Do not run 'make check' to verify libraries. (Not recommended.)"]
    ]
  end

  def install
    # On OS X 10.6, some tests fail under LLVM
    ENV.gcc_4_2
    
    args = ["--prefix=#{prefix}", "--disable-debug", "--disable-dependency-tracking", "--enable-cxx"]

    # Doesn't compile correctly on 10.5 MacPro in 64 bit mode
    if MACOS_VERSION == 10.5 and Hardware.intel_family == :nehalem
      ENV.m32
      args << "--host=none-apple-darwin"
    end
    
    system "./configure", *args
    system "make"
    ENV.j1 # Don't install in parallel
    system "make install"
    
    # Different compilers and options can cause tests to fail even
    # if everything compiles, so yes, we want to do this step.
    system "make check" unless ARGV.include? "--skip-check"
  end
end