1 files changed, 5 insertions, 0 deletions
diff --git a/Source/cmQtAutoGenGlobalInitializer.cxx b/Source/cmQtAutoGenGlobalInitializer.cxx
index 5896bb2..153cb6d 100644
--- a/Source/cmQtAutoGenGlobalInitializer.cxx
+++ b/Source/cmQtAutoGenGlobalInitializer.cxx
@@ -97,6 +97,11 @@ cmQtAutoGenGlobalInitializer::cmQtAutoGenGlobalInitializer(
       }
       std::set<std::string> const& languages =
         target->GetAllConfigCompileLanguages();
+      // cmGeneratorTarget::GetAllConfigCompileLanguages caches the target's
+      // sources. Clear it so that OBJECT library targets that are AUTOGEN
+      // initialized after this target get their added mocs_compilation.cpp
+      // source acknowledged by this target.
+      target->ClearSourcesCache();
       if (languages.count("CSharp")) {
         // Don't process target if it's a CSharp target
         continue;