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55 lines
2.0 KiB
Python
55 lines
2.0 KiB
Python
# Copyright 2020 MongoDB Inc.
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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#
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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 not env.TargetOSIs("darwin")
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and "-fuse-ld=gold" in env["LINKFLAGS"] and "-Wl,--incremental" in env["LINKFLAGS"]):
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return True
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return False
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