Explicit 'all' target overrides implicit 'all' target.

pylib/gyp/generator/ninja.py

 # Copyright (c) 2012 Google Inc. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import copy
 import hashlib
 import multiprocessing
 import os.path
 import re
 import signal
@@ skipping 1725 matching lines @@
     # "build chrome" case as well as the gyp tests, which expect to be
     # able to run actions and build libraries by their short name.
     master_ninja.newline()
     master_ninja.comment('Short names for targets.')
     for short_name in target_short_names:
       master_ninja.build(short_name, 'phony', [x.FinalOutput() for x in
                                                target_short_names[short_name]])
 
   if all_outputs:
     master_ninja.newline()
-    master_ninja.build('all', 'phony', list(all_outputs))
+    if 'all' not in target_short_names:
+      master_ninja.build('all', 'phony', list(all_outputs))
     master_ninja.default(generator_flags.get('default_target', 'all'))
 
 
 def PerformBuild(data, configurations, params):
   options = params['options']
   for config in configurations:
     builddir = os.path.join(options.toplevel_dir, 'out', config)
     arguments = ['ninja', '-C', builddir]
     print 'Building [%s]: %s' % (config, arguments)
     subprocess.check_call(arguments)
@@ skipping 23 matching lines @@
           arglists.append(
               (target_list, target_dicts, data, params, config_name))
           pool.map(CallGenerateOutputForConfig, arglists)
       except KeyboardInterrupt, e:
         pool.terminate()
         raise e
     else:
       for config_name in config_names:
         GenerateOutputForConfig(target_list, target_dicts, data, params,
                                 config_name)