/usr/include/xalanc/PlatformSupport/ is in libxalan-c-dev 1.11-5.
This file is owned by root:root, with mode 0o755.
..
/usr/include/xalanc/PlatformSupport/ArenaAllocator.hpp
/usr/include/xalanc/PlatformSupport/ArenaBlock.hpp
/usr/include/xalanc/PlatformSupport/ArenaBlockBase.hpp
/usr/include/xalanc/PlatformSupport/AttributeListImpl.hpp
/usr/include/xalanc/PlatformSupport/AttributeVectorEntry.hpp
/usr/include/xalanc/PlatformSupport/AttributeVectorEntryExtended.hpp
/usr/include/xalanc/PlatformSupport/AttributesImpl.hpp
/usr/include/xalanc/PlatformSupport/DOMStringHelper.hpp
/usr/include/xalanc/PlatformSupport/DOMStringPrintWriter.hpp
/usr/include/xalanc/PlatformSupport/DirectoryEnumerator.hpp
/usr/include/xalanc/PlatformSupport/DoubleSupport.hpp
/usr/include/xalanc/PlatformSupport/ExecutionContext.hpp
/usr/include/xalanc/PlatformSupport/FormatterListener.hpp
/usr/include/xalanc/PlatformSupport/LocalMsgData.hpp
/usr/include/xalanc/PlatformSupport/LocalMsgIndex.hpp
/usr/include/xalanc/PlatformSupport/NamedNodeMapAttributeList.hpp
/usr/include/xalanc/PlatformSupport/NullPrintWriter.hpp
/usr/include/xalanc/PlatformSupport/PlatformSupportDefinitions.hpp
/usr/include/xalanc/PlatformSupport/PlatformSupportInit.hpp
/usr/include/xalanc/PlatformSupport/PrefixResolver.hpp
/usr/include/xalanc/PlatformSupport/PrintWriter.hpp
/usr/include/xalanc/PlatformSupport/ProblemListenerBase.hpp
/usr/include/xalanc/PlatformSupport/ReusableArenaAllocator.hpp
/usr/include/xalanc/PlatformSupport/ReusableArenaBlock.hpp
/usr/include/xalanc/PlatformSupport/StdBinInputStream.hpp
/usr/include/xalanc/PlatformSupport/StringTokenizer.hpp
/usr/include/xalanc/PlatformSupport/URISupport.hpp
/usr/include/xalanc/PlatformSupport/Writer.hpp
/usr/include/xalanc/PlatformSupport/XSLException.hpp
/usr/include/xalanc/PlatformSupport/XalanAllocator.hpp
/usr/include/xalanc/PlatformSupport/XalanArrayAllocator.hpp
/usr/include/xalanc/PlatformSupport/XalanBitmap.hpp
/usr/include/xalanc/PlatformSupport/XalanCollationServices.hpp
/usr/include/xalanc/PlatformSupport/XalanDOMStringAllocator.hpp
/usr/include/xalanc/PlatformSupport/XalanDOMStringCache.hpp
/usr/include/xalanc/PlatformSupport/XalanDOMStringHashTable.hpp
/usr/include/xalanc/PlatformSupport/XalanDOMStringPool.hpp
/usr/include/xalanc/PlatformSupport/XalanDOMStringReusableAllocator.hpp
/usr/include/xalanc/PlatformSupport/XalanDecimalFormatSymbols.hpp
/usr/include/xalanc/PlatformSupport/XalanEncodingPropertyCache.hpp
/usr/include/xalanc/PlatformSupport/XalanFStreamOutputStream.hpp
/usr/include/xalanc/PlatformSupport/XalanFileOutputStream.hpp
/usr/include/xalanc/PlatformSupport/XalanICUMessageLoader.hpp
/usr/include/xalanc/PlatformSupport/XalanInMemoryMessageLoader.hpp
/usr/include/xalanc/PlatformSupport/XalanLocator.hpp
/usr/include/xalanc/PlatformSupport/XalanMemoryManagerDefault.hpp
/usr/include/xalanc/PlatformSupport/XalanMessageLoader.hpp
/usr/include/xalanc/PlatformSupport/XalanNLSMessageLoader.hpp
/usr/include/xalanc/PlatformSupport/XalanNamespace.hpp
/usr/include/xalanc/PlatformSupport/XalanNullOutputStream.hpp
/usr/include/xalanc/PlatformSupport/XalanNumberFormat.hpp
/usr/include/xalanc/PlatformSupport/XalanOutputStream.hpp
/usr/include/xalanc/PlatformSupport/XalanOutputStreamPrintWriter.hpp
/usr/include/xalanc/PlatformSupport/XalanParsedURI.hpp
/usr/include/xalanc/PlatformSupport/XalanReferenceCountedObject.hpp
/usr/include/xalanc/PlatformSupport/XalanSimplePrefixResolver.hpp
/usr/include/xalanc/PlatformSupport/XalanStdOutputStream.hpp
/usr/include/xalanc/PlatformSupport/XalanToXercesTranscoderWrapper.hpp
/usr/include/xalanc/PlatformSupport/XalanTranscodingServices.hpp
/usr/include/xalanc/PlatformSupport/XalanUTF16Transcoder.hpp
/usr/include/xalanc/PlatformSupport/XalanUnicode.hpp
/usr/include/xalanc/PlatformSupport/XalanXMLChar.hpp