Use gyp targets to link in X11 libraries instead of setting -lXfoo

media/cast/cast.gyp

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'include_tests%': 1,
     'chromium_code': 1,
   },
   'targets': [
@@ skipping 128 matching lines @@
             '<(DEPTH)/testing/gtest.gyp:gtest',
             '<(DEPTH)/media/cast/transport/cast_transport.gyp:cast_transport',
             '<(DEPTH)/media/cast/test/utility/utility.gyp:cast_test_utility',
             '<(DEPTH)/third_party/libyuv/libyuv.gyp:libyuv',
           ],
           'sources': [
             '<(DEPTH)/media/cast/test/receiver.cc',
           ],
           'conditions': [
             ['OS == "linux"', {
+              'dependencies': [
+                '<(DEPTH)/build/linux/system.gyp:x11',
+                '<(DEPTH)/build/linux/system.gyp:xext',
+              ],
               'sources': [
                 '<(DEPTH)/media/cast/test/linux_output_window.cc',
                 '<(DEPTH)/media/cast/test/linux_output_window.h',
               ],
-              'libraries': [
-                '-lXext',
-                '-lX11',
-             ],
           }],
           ],
         },
       ],  # targets
     }], # include_tests
   ],
 }