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49 lines
1.5 KiB
Python
49 lines
1.5 KiB
Python
# Copyright 2017 MongoDB Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import SCons
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def _tag_as_precious(target, source, env):
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env.Precious(target)
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return target, source
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def generate(env):
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builders = env['BUILDERS']
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for builder in ('Program', 'SharedLibrary', 'LoadableModule'):
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emitter = builders[builder].emitter
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builders[builder].emitter = SCons.Builder.ListEmitter([
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emitter,
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_tag_as_precious,
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])
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def exists(env):
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# By default, the windows linker is incremental, so unless
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# overridden in the environment with /INCREMENTAL:NO, the tool is
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# in play.
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if env.TargetOSIs('windows') and not "/INCREMENTAL:NO" in env['LINKFLAGS']:
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return True
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# On posix platforms, excluding darwin, we may have enabled
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# incremental linking. Check for the relevant flags.
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if env.TargetOSIs('posix') and \
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not env.TargetOSIs('darwin') and \
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"-fuse-ld=gold" in env['LINKFLAGS'] and \
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"-Wl,--incremental" in env['LINKFLAGS']:
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return True
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return False
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