Support addons with gyp

Initial pass.

test/addons/hello-world/binding.cc

@@ -0,0 +1,17 @@
+#include <node.h>
+#include <v8.h>
+
+using namespace v8;
+
+extern "C" {
+  void init(Handle<Object> target);
+}
+
+Handle<Value> Method(const Arguments& args) {
+  HandleScope scope;
+  return scope.Close(String::New("world"));
+}
+
+void init(Handle<Object> target) {
+  NODE_SET_METHOD(target, "hello", Method);
+}

test/addons/hello-world/binding.gyp

@@ -0,0 +1,8 @@
+{
+  'targets': [
+    {
+      'target_name': 'binding',
+      'sources': [ 'binding.cc' ]
+    }
+  ]
+}

test/addons/hello-world/test.js

@@ -0,0 +1,4 @@
+var assert = require('assert');
+var binding = require('./out/Release/binding');
+assert.equal('world', binding.hello());
+console.log('binding.hello() =', binding.hello());

tools/addon.gypi

@@ -0,0 +1,17 @@
+{
+  'target_defaults': {
+    'type': 'loadable_module',
+    'product_extension': 'node',
+    'include_dirs': [
+      '../src',
+      '../deps/uv/include',
+      '../deps/v8/include'
+    ],
+
+    'conditions': [
+      [ 'OS=="mac"', {
+        'libraries': [ '-undefined dynamic_lookup' ],
+      }]
+    ]
+  }
+}

tools/gyp_addon

@@ -0,0 +1,26 @@
+#!/usr/bin/env python
+import os
+import sys
+
+script_dir = os.path.dirname(__file__)
+node_root  = os.path.normpath(os.path.join(script_dir, os.pardir))
+
+sys.path.insert(0, os.path.join(node_root, 'tools', 'gyp', 'pylib'))
+import gyp
+
+if __name__ == '__main__':
+  args = sys.argv[1:]
+  addon_gypi = os.path.join(node_root, 'tools', 'addon.gypi')
+  common_gypi = os.path.join(node_root, 'common.gypi')
+  args.extend(['-I', addon_gypi])
+  args.extend(['-I', common_gypi])
+  args.extend(['-Dlibrary=shared_library'])
+  args.extend(['-Dvisibility=default'])
+  args.extend(['--depth=.']);
+
+  gyp_args = list(args)
+  rc = gyp.main(gyp_args)
+  if rc != 0:
+    print 'Error running GYP'
+    sys.exit(rc)
+