common/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 -n "$XML_CATALOG_FILES"; then
  18     oldIFS=$IFS
  19     IFS=' '
  20     for xml_catalog_file in $XML_CATALOG_FILES; do
  21       if test -f $xml_catalog_file; then
  22         XML_CATALOG=$xml_catalog_file
  23         CAT_ENTRY_START='<!--'
  24         CAT_ENTRY_END='-->'
  25         break
  26       fi
  27     done
  28     IFS=$oldIFS
  29   elif test ! -f /etc/xml/catalog; then
  30     for i in /usr/share/sgml/docbook/stylesheet/xsl/nwalsh /usr/share/sgml/docbook/xsl-stylesheets/ /usr/local/share/xsl/docbook ;
  31     do
  32       if test -d "$i"; then
  33         DOCBOOK_ROOT=$i
  34       fi
  35     done
  36   else
  37     XML_CATALOG=/etc/xml/catalog
  38     CAT_ENTRY_START='<!--'
  39     CAT_ENTRY_END='-->'
  40   fi
  41
  42   dnl We need xsltproc to process the test
  43   AC_CHECK_PROG(XSLTPROC,xsltproc,xsltproc,)
  44   XSLTPROC_WORKS=no
  45   if test -n "$XSLTPROC"; then
  46     AC_MSG_CHECKING([whether xsltproc docbook processing works])
  47
  48     if test -n "$XML_CATALOG"; then
  49       DB_FILE="http://docbook.sourceforge.net/release/xsl/current/xhtml/docbook.xsl"
  50     else
  51       DB_FILE="$DOCBOOK_ROOT/xhtml/docbook.xsl"
  52     fi
  53     $XSLTPROC $XSLTPROC_FLAGS $DB_FILE >/dev/null 2>&1 << END
  54 <?xml version="1.0" encoding='ISO-8859-1'?>
  55 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook $TYPE_UC V$DOCBOOK_VERSION//EN" "http://www.oasis-open.org/docbook/$TYPE_LC/$DOCBOOK_VERSION/docbookx.dtd">
  56 <book id="test">
  57 </book>
  58 END
  59     if test "$?" = 0; then
  60       XSLTPROC_WORKS=yes
  61     fi
  62     AC_MSG_RESULT($XSLTPROC_WORKS)
  63   fi
  64
  65   if test "x$XSLTPROC_WORKS" = "xyes"; then
  66     dnl execute ACTION-IF-FOUND
  67     ifelse([$1], , :, [$1])
  68   else
  69     dnl execute ACTION-IF-NOT-FOUND
  70     ifelse([$2], , :, [$2])
  71   fi
  72
  73   AC_SUBST(XML_CATALOG)
  74   AC_SUBST(XSLTPROC_FLAGS)
  75   AC_SUBST(DOCBOOK_ROOT)
  76   AC_SUBST(CAT_ENTRY_START)
  77   AC_SUBST(CAT_ENTRY_END)
  78 ])