I think the first error message is the most informative.  This file:

/home/nml/.docbook/docbook.custom.xsl

is not part of the DocBook XSL distribution, and it does not seem to be mentioned in your Makefile.  Have you examined that file to see what it is?

I suspect the catalog resolver is mapping the stylesheet URL to that file.

Bob Stayton
[email protected]

On 3/28/2020 11:14 AM, Niels Müller Larsen wrote:
When producing html output from my docbook I use the following fragment of a 
Makefile:

html:
                 rm -rf site
                 mkdir site
                 cp css/* site
                 cp js/* site
                 xmllint --noent --xinclude \
                                 module.xml > /tmp/docbresolved.xml \
                                 2>./errloglint
                 xsltproc \
                                 --output site/ \
                                 docbook.xsl \
                                 /tmp/docbresolved.xml \
                                 2>./errlogxslt && \
                 tar czf site.tgz site/*
                 echo "site.tgz ready for deployment"

This works, and it has worked for a long time. I write about coding, so I have 
some need to change to using saxon for added functionality with respect to 
linenumbering and code highlighting. The first step would be a 1:1 change, and 
I have tried:

html:
         rm -rf site
         mkdir site
         cp css/* site
         cp js/* site
         xmllint --noent --xinclude \
                 module.xml > /tmp/docbresolved.xml \
                 2>./errloglint
         java com.icl.saxon.StyleSheet \
                 -x org.apache.xml.resolver.tools.ResolvingXMLReader \
                 -y org.apache.xml.resolver.tools.ResolvingXMLReader \
                 -r org.apache.xml.resolver.tools.CatalogResolver \
                 -u \
                 -o site/index.xhtml \
                 /tmp/docbresolved.xml \
                 /usr/share/xml/docbook/xsl-stylesheets-1.79.2/xhtml5/chunk.xsl 
\
                 base.dir="site" \
                 use.extensions=1 \
                 2>./errlogxslt
         tar czf site.tgz site/*
         echo "site.tgz ready for deployment"

This gives me errors:

Error at xsl:import on line 16 of file:/home/nml/.docbook/docbook.custom.xsl:
   A stylesheet cannot import itself
Error at xsl:when on line 25 of 
file:/usr/share/xml/docbook/xsl-stylesheets-1.79.2/xhtml/chunk-common.xsl:
   Variable exsl.node.set.available has not been declared
Error at xsl:if on line 26 of 
file:/usr/share/xml/docbook/xsl-stylesheets-1.79.2/xhtml/chunk-common.xsl:
   Variable chunk.quietly has not been declared
Error at xsl:apply-templates on line 29 of 
file:/usr/share/xml/docbook/xsl-stylesheets-1.79.2/xhtml/chunk-common.xsl:
   Variable with.namespace has not been declared
Error at xsl:when on line 31 of 
file:/usr/share/xml/docbook/xsl-stylesheets-1.79.2/xhtml/chunk-common.xsl:
   Variable exsl.node.set.available has not been declared
Error at xsl:if on line 32 of 
file:/usr/share/xml/docbook/xsl-stylesheets-1.79.2/xhtml/chunk-common.
......

I have tried many variations and several stylesheets, this just changes the 
error messages I get.

Does anyone have an example of a workflow that works? Chunked output is a must.


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