Make vers_id.cpp depend on ${SOURCE_DATE_EPOCH-None}
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SConstruct
17
SConstruct
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@ -4426,10 +4426,25 @@ class DXXProgram(DXXCommon):
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versid_environ['CCACHE_NODIRECT'] = 1
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versid_environ['CCACHE_NODIRECT'] = 1
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versid_cpp = 'similar/main/vers_id.cpp'
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versid_cpp = 'similar/main/vers_id.cpp'
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versid_obj = env.StaticObject(target='%s%s%s' % (user_settings.builddir, self._apply_target_name(versid_cpp), self.env["OBJSUFFIX"]), source=versid_cpp, CPPDEFINES=versid_cppdefines, ENV=versid_environ)
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versid_obj = env.StaticObject(target='%s%s%s' % (user_settings.builddir, self._apply_target_name(versid_cpp), self.env["OBJSUFFIX"]), source=versid_cpp, CPPDEFINES=versid_cppdefines, ENV=versid_environ)
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Depends = env.Depends
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# If $SOURCE_DATE_EPOCH is set, add its value as a shadow
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# dependency to ensure that vers_id.cpp is rebuilt if
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# $SOURCE_DATE_EPOCH on this run differs from $SOURCE_DATE_EPOCH
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# on last run. If it is unset, use None for this test, so that
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# unset differs from all valid values. Using a fixed value for
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# unset means that vers_id.cpp will not be rebuilt for this
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# dependency if $SOURCE_DATE_EPOCH was previously unset and is
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# currently unset, regardless of when it was most recently
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# built, but vers_id.cpp will be rebuilt if the user changes
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# $SOURCE_DATE_EPOCH and reruns scons.
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#
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# The process environment is not modified, so the default None
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# is never seen by tools that would reject it.
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Depends(versid_obj, env.Value(os.getenv('SOURCE_DATE_EPOCH')))
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if user_settings.versid_depend_all:
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if user_settings.versid_depend_all:
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# Optional fake dependency to force vers_id to rebuild so
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# Optional fake dependency to force vers_id to rebuild so
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# that it picks up the latest timestamp.
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# that it picks up the latest timestamp.
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env.Depends(versid_obj, objects)
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Depends(versid_obj, objects)
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objects.append(versid_obj)
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objects.append(versid_obj)
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# finally building program...
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# finally building program...
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return env.Program(target=exe_target, source = objects)
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return env.Program(target=exe_target, source = objects)
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