Don't build dart2js on Windows.

dart/utils/compiler/compiler.gyp

 # Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 {
-  'conditions': [
-    ['OS=="win"', {'variables': { 'exec_suffix': '.exe', }}],
-    ['OS!="win"', {'variables': { 'exec_suffix': '', }}],
-  ],
   'targets': [
     {
       'target_name': 'dart2js',
       'type': 'none',
       'dependencies': [
         '../../runtime/dart-runtime.gyp:dart',
       ],
       'actions': [
         {
           'action_name': 'build_dart2js',
           'inputs': [
-            '<(PRODUCT_DIR)/dart<(exec_suffix)',
+            '<(PRODUCT_DIR)/dart',
             'build_helper.dart',
           ],
           'outputs': [
             '<(PRODUCT_DIR)/dart2js',
             '<(PRODUCT_DIR)/dart2js_developer',
           ],
-          'action': [
-            '<(PRODUCT_DIR)/dart<(exec_suffix)',
-            'build_helper.dart',
-            '<(PRODUCT_DIR)',
-            'dart',
-            'dart2js',
-            'dart2js_developer',
+          'conditions': [
+            ['OS!="win"', {

[Emily Fortuna, 2012/03/22 18:04:38]

Can you add a TODO(ahe) to remind us to enable building on this in the future?

[ahe, 2012/03/22 18:23:33]

I have CL in progress for this. Søren has helped me but we got interrupted. I'm
pretty sure I know what needs to be done, and I will do it :-)

+              'action': [
+                '<(PRODUCT_DIR)/dart',
+                'build_helper.dart',
+                '<(PRODUCT_DIR)',
+                'dart',
+                'dart2js',
+                'dart2js_developer',
+              ],
+            }],
           ],
         },
       ],
     },
   ],
 }