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install(EXPORT): Set copy-if-different on install export config files

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Avoid reinstalling the per-config export install files if the
contents didn't change after a configure.
This commit is contained in:
Daan De Meyer
2021-01-18 22:02:45 +00:00
committed by Brad King
parent 8a132eca8a
commit 51acae534a
1 changed files with 1 additions and 0 deletions
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Source/cmExportInstallFileGenerator.cxx
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@@ -290,6 +290,7 @@ bool cmExportInstallFileGenerator::GenerateImportFileConfig(
cmSystemTools::Error(e.str()); cmSystemTools::Error(e.str());
return false; return false;
} }
exportFileStream.SetCopyIfDifferent(true);
std::ostream& os = exportFileStream; std::ostream& os = exportFileStream;
// Start with the import file header. // Start with the import file header.