warning: failed to load external entity

[Sam Steingold <sds@gnu.org>]

Hi,
I get a weird error:

XML_CATALOG_FILES="catalog.xml " xsltproc --timing --xinclude
--stringparam collect.xref.targets "only" --stringparam
targets.filename "man.tdb" pile.xsl clisp.xml
Parsing stylesheet pile.xsl took 0 ms
Parsing document clisp.xml took 334 ms
XInclude processing clisp.xml took 0 ms
DocBook XSL stylesheet VERSION is: snapshot_8706
Writing man.tdb for refentry(clisp)
Applying stylesheet took 3119 ms
Saving result took 0 ms

XML_CATALOG_FILES="catalog.xml " xsltproc --timing --xinclude
--stringparam collect.xref.targets "only" --stringparam
targets.filename "clink.tdb" pile.xsl clisp-link.xml
Parsing stylesheet pile.xsl took 0 ms
Parsing document clisp-link.xml took 318 ms
XInclude processing clisp-link.xml took 0 ms
DocBook XSL stylesheet VERSION is: snapshot_8706
--->>> warning: failed to load external entity "olinkdb.xml"
--->>> Olink error: could not open target database 'olinkdb.xml'.
--->>> Error: unresolved olink: targetdoc/targetptr = 'clink/opt-install'.
Writing clink.tdb for refentry(clisp-link)
Applying stylesheet took 2405 ms
Saving result took 0 ms

note that the first invocation is virtually identical to the second one,
 but does not generate the error.
"olinkdb" is never mentioned in my files.
what is going on?
thanks!

-- 
Sam Steingold <http://sds.podval.org>