Avoid MSB8012 in GYP

test/target/gyptest-target.py

+#!/usr/bin/env python
+
+# Copyright (C) 2013 Opera Software ASA.  All rights reserved.
+# This file is an original work developed by Opera Software ASA
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""
+Verifies simplest-possible build of a "Hello, world!" program
+using non-default extension. In particular, verifies that
+target_extension avoids MSB8012 for msvs.
+"""
+
+import TestGyp
+
+# Android does not support setting the build directory.
+test = TestGyp.TestGyp(formats=['!android'])
+
+test.run_gyp('target.gyp')
+test.build('target.gyp')
+
+# executables
+test.built_file_must_exist('hello.stuff', test.EXECUTABLE, bare=True)
+
+# check msvs log for errors
+if test.format == "msvs":
+  log_file = "obj\\hello\\hello.log"
+  test.built_file_must_exist(log_file)
+  test.built_file_must_not_contain(log_file, "MSB8012")
+
+test.pass_test()