HEADSUP: all maintainers using xmlto (0.0.23)

[Jari Aalto]

The newest version of xmlto (0.0.23) attemps to validate all documents
through open network connection. This affects all Cygwin source builds. The
symptoms:

      I/O error : Attempt to load network entity
      http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl
      ...

SOLUTION

If you're having promlems under Cygwin, modify the makefiles to use:

    xmlto --skip-validation ...

Jari

Further reading:

    - There is discussion about the issue in
      <https://trac.macports.org/ticket/26151> which point to a patch like
      <https://trac.macports.org/attachment/ticket/26151/26151.diff> where adding
      an additional option in call to xmlto makes it work with latest version.

    - xmlto author's project page http://cyberelk.net/tim/software/xmlto/
      reads:

        Attempt to load network entity ... failed to load external entity

        This is caused by the absence of correctly configured XML Catalogs
        on your system. When XML Catalogs are available, URLs are
        transformed into local file references. In particular, Debian does
        not provide XML Catalogs. For more information about XML Catalogs
        see the xsltproc documentation <http://xmlsoft.org/catalog.html>.