/usr/include/gammaray/core/ is in gammaray-dev 2.7.0-1ubuntu8.
This file is owned by root:root, with mode 0o755.
..
/usr/include/gammaray/core/enumrepositoryserver.h
/usr/include/gammaray/core/enumutil.h
/usr/include/gammaray/core/gammaray_core_export.h
/usr/include/gammaray/core/metaobject.h
/usr/include/gammaray/core/metaobjectrepository.h
/usr/include/gammaray/core/metaproperty.h
/usr/include/gammaray/core/objectdataprovider.h
/usr/include/gammaray/core/objectmodelbase.h
/usr/include/gammaray/core/objecttypefilterproxymodel.h
/usr/include/gammaray/core/probe.h
/usr/include/gammaray/core/probecontroller.h
/usr/include/gammaray/core/probeinterface.h
/usr/include/gammaray/core/propertycontroller.h
/usr/include/gammaray/core/propertycontrollerextension.h
/usr/include/gammaray/core/signalspycallbackset.h
/usr/include/gammaray/core/singlecolumnobjectproxymodel.h
/usr/include/gammaray/core/toolfactory.h
/usr/include/gammaray/core/util.h
/usr/include/gammaray/core/varianthandler.h