/usr/include/ is in libctpp2-dev 2.8.3-9ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/ctpp2/
/usr/include/ctpp2/CDT.hpp
/usr/include/ctpp2/CTPP2VMArgStack.hpp
/usr/include/ctpp2/CTPP2VMInstruction.hpp
/usr/include/ctpp2/CTPP2FileSourceLoader.hpp
/usr/include/ctpp2/CTPP2VMDebugInfo.hpp
/usr/include/ctpp2/CTPP2VMStackException.hpp
/usr/include/ctpp2/CTPP2ErrorCodes.h
/usr/include/ctpp2/STLIosfwd.hpp
/usr/include/ctpp2/CTPP2VMSTDLib.hpp
/usr/include/ctpp2/CTPP2StaticText.hpp
/usr/include/ctpp2/CTPP2Logger.hpp
/usr/include/ctpp2/CTPP2VMException.hpp
/usr/include/ctpp2/CTPP2VMFileLoader.hpp
/usr/include/ctpp2/CTPP2SourceLoader.hpp
/usr/include/ctpp2/CDTSortRoutines.hpp
/usr/include/ctpp2/CTPP2Exception.hpp
/usr/include/ctpp2/CTPP2DTOA.hpp
/usr/include/ctpp2/CTPP2StreamOutputCollector.hpp
/usr/include/ctpp2/CTPP2SimpleVM.hpp
/usr/include/ctpp2/CTPP2StringIconvOutputCollector.hpp
/usr/include/ctpp2/STLMap.hpp
/usr/include/ctpp2/CTPP2StringBuffer.hpp
/usr/include/ctpp2/CTPP2GlobalDefines.h
/usr/include/ctpp2/CTPP2HashTable.hpp
/usr/include/ctpp2/CTPP2OutputCollector.hpp
/usr/include/ctpp2/CTPP2SysHeaders.h
/usr/include/ctpp2/CTPP2ParserException.hpp
/usr/include/ctpp2/CTPP2StringOutputCollector.hpp
/usr/include/ctpp2/CTPP2CharIterator.hpp
/usr/include/ctpp2/CTPP2GetText.hpp
/usr/include/ctpp2/STLVector.hpp
/usr/include/ctpp2/CTPP2Compiler.hpp
/usr/include/ctpp2/CTPP2VMSyscall.hpp
/usr/include/ctpp2/CTPP2StaticData.hpp
/usr/include/ctpp2/CTPP2VM.hpp
/usr/include/ctpp2/CTPP2SimpleCompiler.hpp
/usr/include/ctpp2/STLException.hpp
/usr/include/ctpp2/CTPP2SymbolTable.hpp
/usr/include/ctpp2/STLOstream.hpp
/usr/include/ctpp2/STLString.hpp
/usr/include/ctpp2/CTPP2SysTypes.h
/usr/include/ctpp2/CTPP2Util.hpp
/usr/include/ctpp2/CTPP2VMOpcodeCollector.hpp
/usr/include/ctpp2/CTPP2VMExecutable.hpp
/usr/include/ctpp2/CTPP2SyscallFactory.hpp
/usr/include/ctpp2/CTPP2VMLoader.hpp
/usr/include/ctpp2/CTPP2BitIndex.hpp
/usr/include/ctpp2/CTPP2Types.h
/usr/include/ctpp2/CTPP2JSONFileParser.hpp
/usr/include/ctpp2/CTPP2VMOpcodes.h
/usr/include/ctpp2/STLPair.hpp
/usr/include/ctpp2/CTPP2FileOutputCollector.hpp
/usr/include/ctpp2/CTPP2JSONParser.hpp
/usr/include/ctpp2/CTPP2VMCodeStack.hpp
/usr/include/ctpp2/CTPP2FileLogger.hpp
/usr/include/ctpp2/CTPP2Syntax.h
/usr/include/ctpp2/CTPP2Sprintf.hpp
/usr/include/ctpp2/CTPP2Parser.hpp
/usr/include/ctpp2/CTPP2Error.hpp
/usr/include/ctpp2/CTPP2VMDumper.hpp
/usr/include/ctpp2/CTPP2VMMemoryCore.hpp
/usr/include/ctpp2/STLFunctional.hpp