Introduce '--no-duplicate-basename-check' option to disable the check of duplicate basenames

test/errors/gyptest-errors.py

 #!/usr/bin/env python
 
 # 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.
 
 """
 Test that two targets with the same name generates an error.
 """
 
+import os
+import sys
+
 import TestGyp
 import TestCmd
 
 # TODO(sbc): Remove the use of match_re below, done because scons
 # error messages were not consistent with other generators.
 # Also remove input.py:generator_wants_absolute_build_file_paths.
 
 test = TestGyp.TestGyp()
 
 stderr = ('gyp: Duplicate target definitions for '
@@ skipping 11 matching lines @@
              match=TestCmd.match_re)
 
 stderr = ("gyp: Key 'targets' repeated at level 1 with key path '' while "
           "reading .*duplicate_node.gyp.*")
 test.run_gyp('duplicate_node.gyp', '--check', status=1, stderr=stderr,
              match=TestCmd.match_re_dotall)
 
 stderr = 'gyp: Duplicate basenames in sources section, see list above\n'
 test.run_gyp('duplicate_basenames.gyp', status=1, stderr=stderr)
 
+# Check if '--no-duplicate-basename-check' works.
+if ((test.format == 'make' and sys.platform == 'darwin') or
+    (test.format == 'msvs' and
+        int(os.environ.get('GYP_MSVS_VERSION', 2010)) < 2010)):
+  stderr = 'gyp: Duplicate basenames in sources section, see list above\n'
+  test.run_gyp('duplicate_basenames.gyp', '--no-duplicate-basename-check',
+               status=1, stderr=stderr)
+else:
+  test.run_gyp('duplicate_basenames.gyp', '--no-duplicate-basename-check')
+
 stderr = ("gyp: Dependency '.*missing_dep.gyp:missing.gyp#target' not found "
           "while trying to load target .*missing_dep.gyp:foo#target\n")
 test.run_gyp('missing_dep.gyp', status=1, stderr=stderr,
              match=TestCmd.match_re)
 
 test.pass_test()