cpp xerces-c is a C++ library specializing in XML parsing. It is released by the Apache Foundation Use iconv (virtual/libiconv) as message loader and transcoder (in general it would be possible to use iconv only as message loader and something else like icu or the native method as transcoder and vice-versa, but this is a less common case and hard to handle) Use the net-libs/libwww library for fetching URLs, instead of the builtin method Enable threading support through pthread (or other libraries on AIX, IRIX, HPUX, Solars). Highly recommended