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Ninja: Do not clean metadata when re-generating inside a running build

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When `ninja` re-runs CMake to re-generate the build system, do not try
to use the ninja tools to update metadata on Windows.  The outer ninja
process is already holding the files open.

Issue: #20274
This commit is contained in:
Brad King
2020-01-27 15:31:53 -05:00
parent 657820a00b
commit ccaa0bccc4
1 changed files with 9 additions and 1 deletions
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10
Source/cmGlobalNinjaGenerator.cxx
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@@ -528,7 +528,15 @@ void cmGlobalNinjaGenerator::Generate()
this->CloseRulesFileStream();
this->CloseBuildFileStreams();
this->CleanMetaData();
#ifdef _WIN32
// The ninja tools will not be able to update metadata on Windows
// when we are re-generating inside an existing 'ninja' invocation
// because the outer tool has the files open for write.
if (!this->GetCMakeInstance()->GetRegenerateDuringBuild())
#endif
{
this->CleanMetaData();
}
}
void cmGlobalNinjaGenerator::CleanMetaData()