diff --git a/Source/cmExtraEclipseCDT4Generator.h b/Source/cmExtraEclipseCDT4Generator.h
index 76079c804..955d0aae3 100644
--- a/Source/cmExtraEclipseCDT4Generator.h
+++ b/Source/cmExtraEclipseCDT4Generator.h
@@ -111,6 +111,7 @@ private:
   std::vector<std::string> OutLinkedResources;
   std::string HomeDirectory;
   std::string HomeOutputDirectory;
+  std::set<std::string> TargetsToIgnore;
   bool IsOutOfSourceBuild;
   bool GenerateSourceProject;