Building HDDM support software

• would like to avoid inconsistency between event.xsd and hddm_s.c, .h
  • .c and .h are made from the .xsd
  • currently both are checked in
    • as well as event.xml (we are triply redundant)
  • tools for building .c and .h are not generally created (expert-only operation)
  • because of checkout order, makefile can fail
• standard solution: check out the authority, make the dependent file
  • need to build the tools to do this
• objection to standard solution: package creep
  • everyone would need the software to build this
  • what is needed?
    • yum install perl-XML-Xerces
    • yum install xalan-c
• schema is authority
  • outside world sees w3c standard
  • schema can be richer than hddm
  • hddm much easier to work with
    • introduces merging problem
    • current schema does not take advantage of this
    • cross that bridge when we come to it