xerces-c

Xerces-C++ is a validating XML parser written in a portable subset of C++.

https://slackbuilds.org/repository/14.2/libraries/xerces-c/
http://xerces.apache.org/xerces-c/program-3.html

Slackbuild

   1 cd /tmp/
   2 wget https://slackbuilds.org/slackbuilds/14.2/libraries/xerces-c.tar.gz
   3 tar xvzf xerces-c.tar.gz 
   4 cd xerces-c
   5 ./xerces-c.SlackBuild 
   6 wget http://archive.apache.org/dist/xerces/c/3/sources/xerces-c-3.2.0.tar.gz
   7 ./xerces-c.SlackBuild 
   8 installpkg  /tmp/xerces-c-3.2.0-i486-1_SBo.tgz