Disclaimer:

    XML4C is not officially supported under MacOS. These instructions
    were provided by one of the contributers/users of XML4C and have
    been included in the XML4C distribution just for convenience and
    benefit of other users. XML4C team, will not be able to maintain
    these files, but will be very willing to accept changes as
    submitted by the users. All such changes may be sent to
    xml4c@us.ibm.com.