Merge topic 'tid-system-argument'

9cf3547 Add the INTERFACE_SYSTEM_INCLUDE_DIRECTORIES target property.
1925cff Add a SYSTEM parameter to target_include_directories (#14180)
286f227 Extend the cmTargetPropCommandBase interface property handling.
83498d4 Store system include directories in the cmTarget.
f1fcbe3 Add Target API to determine if an include is a system include.
2679a34 Remove unused variable.

1 files changed, 3 insertions, 0 deletions

diff --git a/Source/cmMakefile.h b/Source/cmMakefile.h
index 1b10773..871fa1b 100644
--- a/Source/cmMakefile.h
+++ b/Source/cmMakefile.h
@@ -879,6 +879,9 @@ public:
   bool IsGeneratingBuildSystem(){ return this->GeneratingBuildSystem; }
   void SetGeneratingBuildSystem(){ this->GeneratingBuildSystem = true; }
 
+  std::set<cmStdString> const & GetSystemIncludeDirectories() const
+    { return this->SystemIncludeDirectories; }
+
 protected:
   // add link libraries and directories to the target
   void AddGlobalLinkInformation(const char* name, cmTarget& target);