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# -*- Python -*-
# Copyright 2008 Google Inc. All Rights Reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Author: vladl@google.com (Vlad Losev)
#
# Shared SCons utilities for building Google Test's own tests.
#
EnsurePythonVersion(2, 3)
class EnvCreator:
"""Creates new customized environments from a base one."""
def _Remove(cls, env, attribute, value):
"""Removes the given attribute value from the environment."""
attribute_values = env[attribute]
if value in attribute_values:
attribute_values.remove(value)
_Remove = classmethod(_Remove)
def Create(cls, base_env, modifier=None):
# User should NOT create more than one environment with the same
# modifier (including None).
env = base_env.Clone()
if modifier:
modifier(env)
return env;
Create = classmethod(Create)
# Each of the following methods modifies the environment for a particular
# purpose and can be used by clients for creating new environments. Each
# one needs to set the OBJ_SUFFIX variable to a unique suffix to
# differentiate targets built with that environment. Otherwise, SCons may
# complain about same target built with different settings.
def UseOwnTuple(cls, env):
"""Instructs Google Test to use its internal implementation of tuple."""
env['OBJ_SUFFIX'] = '_use_own_tuple'
env.Append(CPPDEFINES = 'GTEST_USE_OWN_TR1_TUPLE=1')
UseOwnTuple = classmethod(UseOwnTuple)
def WarningOk(cls, env):
"""Does not treat warnings as errors.
Necessary for compiling gtest_unittest.cc, which triggers a gcc
warning when testing EXPECT_EQ(NULL, ptr)."""
env['OBJ_SUFFIX'] = '_warning_ok'
if env['PLATFORM'] == 'win32':
cls._Remove(env, 'CCFLAGS', '-WX')
else:
cls._Remove(env, 'CCFLAGS', '-Werror')
WarningOk = classmethod(WarningOk)
def WithExceptions(cls, env):
"""Re-enables exceptions."""
env['OBJ_SUFFIX'] = '_ex'
if env['PLATFORM'] == 'win32':
env.Append(CCFLAGS=['/EHsc'])
env.Append(CPPDEFINES='_HAS_EXCEPTIONS=1')
# Undoes the _TYPEINFO_ hack, which is unnecessary and only creates
# trouble when exceptions are enabled.
cls._Remove(env, 'CPPDEFINES', '_TYPEINFO_')
cls._Remove(env, 'CPPDEFINES', '_HAS_EXCEPTIONS=0')
else:
env.Append(CCFLAGS='-fexceptions')
cls._Remove(env, 'CCFLAGS', '-fno-exceptions')
WithExceptions = classmethod(WithExceptions)
def LessOptimized(cls, env):
"""Disables certain optimizations on Windows.
We need to disable some optimization flags for some tests on
Windows; otherwise the redirection of stdout does not work
(apparently because of a compiler bug)."""
env['OBJ_SUFFIX'] = '_less_optimized'
if env['PLATFORM'] == 'win32':
for flag in ['/O1', '/Os', '/Og', '/Oy']:
cls._Remove(env, 'LINKFLAGS', flag)
LessOptimized = classmethod(LessOptimized)
def WithThreads(cls, env):
"""Allows use of threads.
Currently only enables pthreads under GCC."""
env['OBJ_SUFFIX'] = '_with_threads'
if env['PLATFORM'] != 'win32':
# Assuming POSIX-like environment with GCC.
# TODO(vladl@google.com): sniff presence of pthread_atfork instead of
# selecting on a platform.
env.Append(CCFLAGS=['-pthread'])
env.Append(LINKFLAGS=['-pthread'])
WithThreads = classmethod(WithThreads)
def NoRtti(cls, env):
"""Disables RTTI support."""
env['OBJ_SUFFIX'] = '_no_rtti'
if env['PLATFORM'] == 'win32':
env.Append(CCFLAGS=['/GR-'])
else:
env.Append(CCFLAGS=['-fno-rtti'])
env.Append(CPPDEFINES='GTEST_HAS_RTTI=0')
NoRtti = classmethod(NoRtti)
sconscript_exports = {'EnvCreator': EnvCreator}
Return('sconscript_exports')
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