m4/as-docbook.m4

   1 dnl AS_DOCBOOK([, ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]])
   2 dnl checks if xsltproc can build docbook documentation
   3 dnl (which is possible if the catalog is set up properly
   4 dnl I also tried checking for a specific version and type of docbook
   5 dnl but xsltproc seemed to happily run anyway, so we can't check for that
   6 dnl and version
   7 dnl this macro takes inspiration from
   8 dnl http://www.movement.uklinux.net/docs/docbook-autotools/configure.html
   9 AC_DEFUN([AS_DOCBOOK],
  10 [
  11   XSLTPROC_FLAGS=--nonet
  12   DOCBOOK_ROOT=
  13   TYPE_LC=xml
  14   TYPE_UC=XML
  15   DOCBOOK_VERSION=4.1.2
  16
  17   if test ! -f /etc/xml/catalog; then
  18     for i in /usr/share/sgml/docbook/stylesheet/xsl/nwalsh /usr/share/sgml/docbook/xsl-stylesheets/;
  19     do
  20       if test -d "$i"; then
  21         DOCBOOK_ROOT=$i
  22       fi
  23     done
  24   else
  25     XML_CATALOG=/etc/xml/catalog
  26     CAT_ENTRY_START='<!--'
  27     CAT_ENTRY_END='-->'
  28   fi
  29
  30   dnl We need xsltproc to process the test
  31   AC_CHECK_PROG(XSLTPROC,xsltproc,xsltproc,)
  32   XSLTPROC_WORKS=no
  33   if test -n "$XSLTPROC"; then
  34     AC_MSG_CHECKING([whether xsltproc docbook processing works])
  35
  36     if test -n "$XML_CATALOG"; then
  37       DB_FILE="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"
  38     else
  39       DB_FILE="$DOCBOOK_ROOT/docbook.xsl"
  40     fi
  41     $XSLTPROC $XSLTPROC_FLAGS $DB_FILE >/dev/null 2>&1 << END
  42 <?xml version="1.0" encoding='ISO-8859-1'?>
  43 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook $TYPE_UC V$DOCBOOK_VERSION//EN" "http://www.oasis-open.org/docbook/$TYPE_LC/$DOCBOOK_VERSION/docbookx.dtd">
  44 <book id="test">
  45 </book>
  46 END
  47     if test "$?" = 0; then
  48       XSLTPROC_WORKS=yes
  49     fi
  50     AC_MSG_RESULT($XSLTPROC_WORKS)
  51   fi
  52
  53   if test "x$XSLTPROC_WORKS" = "xyes"; then
  54     dnl execute ACTION-IF-FOUND
  55     ifelse([$1], , :, [$1])
  56   else
  57     dnl execute ACTION-IF-NOT-FOUND
  58     ifelse([$2], , :, [$2])
  59   fi
  60
  61   AC_SUBST(XML_CATALOG)
  62   AC_SUBST(XSLTPROC_FLAGS)
  63   AC_SUBST(DOCBOOK_ROOT)
  64   AC_SUBST(CAT_ENTRY_START)
  65   AC_SUBST(CAT_ENTRY_END)
  66 ])