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Make vers_id.cpp depend on ${SOURCE_DATE_EPOCH-None}

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Kp 2017-08-02 02:49:12 +00:00
parent c9d733dd10
commit a6a5f7be82
1 changed files with 16 additions and 1 deletions
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17
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@ -4426,10 +4426,25 @@ class DXXProgram(DXXCommon):
versid_environ['CCACHE_NODIRECT'] = 1
versid_cpp = 'similar/main/vers_id.cpp'
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)
Depends = env.Depends
# If $SOURCE_DATE_EPOCH is set, add its value as a shadow
# dependency to ensure that vers_id.cpp is rebuilt if
# $SOURCE_DATE_EPOCH on this run differs from $SOURCE_DATE_EPOCH
# on last run. If it is unset, use None for this test, so that
# unset differs from all valid values. Using a fixed value for
# unset means that vers_id.cpp will not be rebuilt for this
# dependency if $SOURCE_DATE_EPOCH was previously unset and is
# currently unset, regardless of when it was most recently
# built, but vers_id.cpp will be rebuilt if the user changes
# $SOURCE_DATE_EPOCH and reruns scons.
#
# The process environment is not modified, so the default None
# is never seen by tools that would reject it.
Depends(versid_obj, env.Value(os.getenv('SOURCE_DATE_EPOCH')))
if user_settings.versid_depend_all:
# Optional fake dependency to force vers_id to rebuild so
# that it picks up the latest timestamp.
env.Depends(versid_obj, objects)
Depends(versid_obj, objects)
objects.append(versid_obj)
# finally building program...
return env.Program(target=exe_target, source = objects)