Rework the cflags test so it works cross platform.

test/cflags/gyptest-cflags.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.
 
 """
 Verifies build of an executable with C++ define specified by a gyp define, and
 the use of the environment during regeneration when the gyp file changes.
 """
@@ skipping 15 matching lines @@
 
 formats = ['make']
 if sys.platform.startswith('linux'):
   # Only Linux ninja generator supports CFLAGS.
   formats.append('ninja')
 
 test = TestGyp.TestGyp(formats=formats)
 
 try:
   PushEnv()
-  os.environ['CFLAGS'] = '-O0'
+  os.environ['CFLAGS'] = ''
   os.environ['GYP_CROSSCOMPILE'] = '1'
   test.run_gyp('cflags.gyp')
   test.build('cflags.gyp')
 finally:
   # We clear the environ after calling gyp.  When the auto-regeneration happens,
   # the same define should be reused anyway.  Reset to empty string first in
   # case the platform doesn't support unsetenv.
   PopEnv()
 
 
-expect = """\
-Using no optimization flag
-"""
+expect = """FOO not defined\n"""
 test.run_built_executable('cflags', stdout=expect)
 test.run_built_executable('cflags_host', stdout=expect)
 
 test.sleep()
 
 try:
   PushEnv()
-  os.environ['CFLAGS'] = '-O2'
+  os.environ['CFLAGS'] = '-DFOO=1'
   os.environ['GYP_CROSSCOMPILE'] = '1'
   test.run_gyp('cflags.gyp')
   test.build('cflags.gyp')
 finally:
   # We clear the environ after calling gyp.  When the auto-regeneration happens,
   # the same define should be reused anyway.  Reset to empty string first in
   # case the platform doesn't support unsetenv.
   PopEnv()
 
 
-expect = """\
-Using an optimization flag
-"""
+expect = """FOO defined\n"""
 test.run_built_executable('cflags', stdout=expect)
 
 # Environment variables shouldn't influence the flags for the host.
-expect = """\
-Using no optimization flag
-"""
+expect = """FOO not defined\n"""
 test.run_built_executable('cflags_host', stdout=expect)
 
 test.sleep()
 
 try:
   PushEnv()
-  os.environ['CFLAGS'] = '-O0'
+  os.environ['CFLAGS'] = ''
   test.run_gyp('cflags.gyp')
   test.build('cflags.gyp')
 finally:
   # We clear the environ after calling gyp.  When the auto-regeneration happens,
   # the same define should be reused anyway.  Reset to empty string first in
   # case the platform doesn't support unsetenv.
   PopEnv()
 
 
-expect = """\
-Using no optimization flag
-"""
+expect = """FOO not defined\n"""
 test.run_built_executable('cflags', stdout=expect)
 
 test.sleep()
 
 try:
   PushEnv()
-  os.environ['CFLAGS'] = '-O2'
+  os.environ['CFLAGS'] = '-DFOO=1'
   test.run_gyp('cflags.gyp')
   test.build('cflags.gyp')
 finally:
   # We clear the environ after calling gyp.  When the auto-regeneration happens,
   # the same define should be reused anyway.  Reset to empty string first in
   # case the platform doesn't support unsetenv.
   PopEnv()
 
 
-expect = """\
-Using an optimization flag
-"""
+expect = """FOO defined\n"""
 test.run_built_executable('cflags', stdout=expect)
 
 test.pass_test()