New formula: rabbitmq-c

RabbitMQ C library formula and dependencies, including the
rabbitmq-codegen library required to build.

Closes Homebrew/homebrew#13437.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Formula/rabbitmq-c.rb

@@ -0,0 +1,31 @@
+require 'formula'
+
+class RabbitmqCodegen < Formula
+  url 'http://github.com/rabbitmq/rabbitmq-codegen/tarball/rabbitmq_v2_8_2'
+  sha1 '628afefe54f6996f7c99ac8c9d5820c5ed2aeaa7'
+end
+
+class RabbitmqC < Formula
+  homepage 'https://github.com/alanxz/rabbitmq-c'
+  url 'https://github.com/alanxz/rabbitmq-c/tarball/v0.1'
+  sha1 '57a1f3e69c36d5766df4b3a567552743b12a91d3'
+
+  head 'https://github.com/alanxz/rabbitmq-c.git'
+
+  depends_on :autoconf
+  depends_on 'rabbitmq'
+  depends_on 'simplejson' => :python if MacOS.version == :leopard
+
+  option :universal
+
+  def install
+    ENV.universal_binary if build.universal?
+
+    RabbitmqCodegen.new.brew { (buildpath/"codegen").install Dir["*"] }
+
+    system "autoreconf", "-i"
+    system "./configure", "--prefix=#{prefix}", "--disable-dependency-tracking"
+    system "make install"
+  end
+
+end