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74 lines
2.8 KiB
Python
74 lines
2.8 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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_splitDwarfFlag = "-gsplit-dwarf"
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# Cribbed from Tool/cc.py and Tool/c++.py. It would be better if
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# we could obtain this from SCons.
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_CSuffixes = [".c"]
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if not SCons.Util.case_sensitive_suffixes(".c", ".C"):
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_CSuffixes.append(".C")
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_CXXSuffixes = [".cpp", ".cc", ".cxx", ".c++", ".C++"]
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if SCons.Util.case_sensitive_suffixes(".c", ".C"):
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_CXXSuffixes.append(".C")
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def _dwo_emitter(target, source, env):
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new_targets = []
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for t in target:
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base, ext = SCons.Util.splitext(str(t))
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if not any(ext == env[osuffix] for osuffix in ["OBJSUFFIX", "SHOBJSUFFIX"]):
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continue
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# TODO: Move 'dwo' into DWOSUFFIX so it can be customized? For
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# now, GCC doesn't let you control the output filename, so it
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# doesn't matter.
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dwotarget = (t.builder.target_factory or env.File)(base + ".dwo")
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new_targets.append(dwotarget)
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targets = target + new_targets
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return (targets, source)
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def generate(env):
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suffixes = []
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if _splitDwarfFlag in env["CCFLAGS"]:
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suffixes = _CSuffixes + _CXXSuffixes
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else:
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if _splitDwarfFlag in env["CFLAGS"]:
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suffixes.extend(_CSuffixes)
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if _splitDwarfFlag in env["CXXFLAGS"]:
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suffixes.extend(_CXXSuffixes)
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for object_builder in SCons.Tool.createObjBuilders(env):
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emitterdict = object_builder.builder.emitter
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for suffix in emitterdict.keys():
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if not suffix in suffixes:
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continue
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base = emitterdict[suffix]
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emitterdict[suffix] = SCons.Builder.ListEmitter([base, _dwo_emitter,])
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def exists(env):
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return any(_splitDwarfFlag in env[f] for f in ["CCFLAGS", "CFLAGS", "CXXFLAGS"])
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