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dnl AS_DOCBOOK([, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
dnl checks if xsltproc can build docbook documentation
dnl (which is possible if the catalog is set up properly
dnl I also tried checking for a specific version and type of docbook
dnl but xsltproc seemed to happily run anyway, so we can't check for that
dnl and version
dnl this macro takes inspiration from
dnl http://www.movement.uklinux.net/docs/docbook-autotools/configure.html
AC_DEFUN([AS_DOCBOOK],
[
XSLTPROC_FLAGS=--nonet
DOCBOOK_ROOT=
TYPE_LC=xml
TYPE_UC=XML
DOCBOOK_VERSION=4.1.2
if test ! -f /etc/xml/catalog; then
for i in /usr/share/sgml/docbook/stylesheet/xsl/nwalsh /usr/share/sgml/docbook/xsl-stylesheets/ /usr/local/share/xsl/docbook ;
do
if test -d "$i"; then
DOCBOOK_ROOT=$i
fi
done
else
XML_CATALOG=/etc/xml/catalog
CAT_ENTRY_START='<!--'
CAT_ENTRY_END='-->'
fi
dnl We need xsltproc to process the test
AC_CHECK_PROG(XSLTPROC,xsltproc,xsltproc,)
XSLTPROC_WORKS=no
if test -n "$XSLTPROC"; then
AC_MSG_CHECKING([whether xsltproc docbook processing works])
if test -n "$XML_CATALOG"; then
DB_FILE="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"
else
DB_FILE="$DOCBOOK_ROOT/xhtml/docbook.xsl"
fi
$XSLTPROC $XSLTPROC_FLAGS $DB_FILE >/dev/null 2>&1 << END
<?xml version="1.0" encoding='ISO-8859-1'?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook $TYPE_UC V$DOCBOOK_VERSION//EN" "http://www.oasis-open.org/docbook/$TYPE_LC/$DOCBOOK_VERSION/docbookx.dtd">
<book id="test">
</book>
END
if test "$?" = 0; then
XSLTPROC_WORKS=yes
fi
AC_MSG_RESULT($XSLTPROC_WORKS)
fi
if test "x$XSLTPROC_WORKS" = "xyes"; then
dnl execute ACTION-IF-FOUND
ifelse([$1], , :, [$1])
else
dnl execute ACTION-IF-NOT-FOUND
ifelse([$2], , :, [$2])
fi
AC_SUBST(XML_CATALOG)
AC_SUBST(XSLTPROC_FLAGS)
AC_SUBST(DOCBOOK_ROOT)
AC_SUBST(CAT_ENTRY_START)
AC_SUBST(CAT_ENTRY_END)
])
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