Merge pull request #1635 from uberhacker/add-yajl-package

Add yajl package

packages/yajl.rb

+require 'package'
+
+class Yajl < Package
+  description 'A fast streaming JSON parsing library in C.'
+  homepage 'http://lloyd.github.io/yajl/'
+  version '2.1.0'
+  source_url 'https://github.com/lloyd/yajl/archive/2.1.0.tar.gz'
+  source_sha256 '3fb73364a5a30efe615046d07e6db9d09fd2b41c763c5f7d3bfb121cd5c5ac5a'
+
+  binary_url ({
+  })
+  binary_sha256 ({
+  })
+
+  depends_on 'cmake' => :build
+
+  def self.build
+    Dir.mkdir 'build'
+    Dir.chdir 'build' do
+      system "cmake .. -DPREFIX=#{CREW_PREFIX} -DCMAKE_INSTALL_LIBDIR=#{CREW_DEST_LIB_PREFIX}"
+      system "make"
+    end
+  end
+
+  def self.install
+    Dir.chdir 'build' do
+      system "make", "DESTDIR=#{CREW_DEST_DIR}", "install"
+    end
+  end
+end