Olink: can't resolve xlink cross-refs.

[Denis Bradford <denis.bradford@verizon.net>]

I can't quite get olink/xlink working. In "The Compleat Guide", Bob
seems to have left no turn unstoned, so I must have a giant blind
spot, missing something obvious. Any suggestions appreciated.

I've got a command reference manual with many xlinked ref pages.
For now my goal is to test a simple HTML cross-reference:
<a href="sb-config.html#synop">

My test olink seems to resolve the targetptr (synop) but fails to
find the xlinked file (sb-config.html) even tho my build does generate
the xlinked files. Here's how I'm trying to code this:

#master doc:
   <book id="sbref">
     <reference>
       <xi:include href="sbconfig.xml" />
       <xi:include href="sbadmin.xml" />
     </reference>
   </book>

#sbconfig.xml:
   <refentry id="sb-config">
     <refsection id="synop">
     </refsection>
   </refentry>

#sbadmin.xml:
   <refentry id="sbadmin">
     <para>Refer to the <olink targetdoc="sbref" targetptr="synop"></olink>
     section of the sb-admin page.</para>
  </refentry>

#olinkdb.xml:
   <!DOCTYPE targetset
        SYSTEM "/opt/xml/xsl/docbookxsl/common/targetdatabase.dtd" [
     <!ENTITY reftargets SYSTEM "target.db">
     ]>
     <targetset>
       <sitemap>
         <dir name="../ref">
           <document targetdoc="sbref">
            &reftargets;
           </document>
         </dir>
       </sitemap>
     </targetset>

I've tried lots of command variations of:

1. java  sbref.xml chunk.xsl collect.xref.targets="only" current.docid="sbref" targets.filename="target.db"

2. java  sbref.xml chunk.xsl target.database.document="olinkdb.xml"  current.docid="sbref" olink.debug="1"

Here's a typical error stream:
Writing ~/ref/pr01.html for preface
Writing ~/ref/rn01re01.html for refentry(sb-config)
Olink debug: root element of target.database 'olinkdb.xml' is 'targetset'.
Olink debug: cases for targetdoc='sb-config' and targetptr='synop' in language 'en'.
Olink debug: CaseA NOT matched
Olink debug: No case matched for lang 'en'.
Olink debug: cases for targetdoc='sb-config' and targetptr='synop' in language ''.
Olink debug: CaseA NOT matched
Olink debug: No case matched for lang ''.
Error: unresolved olink: targetdoc/targetptr = 'sb-config/synop'.
Olink error: no generated text for targetdoc/targetptr/lang = ''.
Writing ~/ref/rn01re02.html for refentry(sbadmin)Writing ~/ref/rn01.html for reference
Writing ~/ref/index.html for book(sbref)