+dnl
+dnl ----- libXML2
+AC_SUBST(XML2_LIBS)
+AC_SUBST(XML2_CFLAGS)
+xml2dir=yes
+AC_ARG_WITH(xml2, [ --with-xml2[=PREFIX] use libxml2 in PREFIX],[xml2dir=$withval])
+if test "$xml2dir" = "yes"; then
+ for d in /usr /usr/local; do
+ if test -x $d/bin/xml2-config; then
+ xml2dir=$d
+ fi
+ done
+fi
+if test "$xml2dir" != "no"; then
+ AC_MSG_CHECKING(for libXML2)
+ if test -x $xml2dir/bin/xml2-config; then
+ XML2_LIBS=`$xml2dir/bin/xml2-config --libs`
+ LIBS="$XML2_LIBS $LIBS"
+ XML2_CFLAGS=`$xml2dir/bin/xml2-config --cflags`
+ XML2_VER=`$xml2dir/bin/xml2-config --version`
+ AC_MSG_RESULT($XML2_VER)
+ AC_DEFINE(HAVE_XML2)
+ else
+ AC_MSG_RESULT(Not found)
+ fi
+fi
+
+dnl
+dnl ----- DOCBOOK DTD
+AC_SUBST(DTD_DIR)
+AC_ARG_WITH(dtd, [ --with-dtd[=DIR] Use docbookx.dtd in DIR],
+[
+ if test -f "$withval/docbookx.dtd"; then
+ DTD_DIR=$withval
+ fi
+],[
+ AC_MSG_CHECKING(for docbookx.dtd)
+ for d in /usr/share/sgml/docbook/dtd/xml/4.1.2 \
+ /usr/share/sgml/docbook/xml-dtd-4.1.2* \
+ /usr/share/sgml/docbook/xml-dtd-4.1 \
+ /usr/share/sgml/docbook/dtd/xml/4.0 \
+ /usr/lib/sgml/dtd/docbook-xml
+ do
+ if test -f $d/docbookx.dtd; then
+ AC_MSG_RESULT($d)
+ DTD_DIR=$d
+ break
+ fi
+ done
+ if test -z "$DTD_DIR"; then
+ AC_MSG_RESULT(Not found)
+ fi
+])
+AC_SUBST(DSSSL_DIR)
+AC_ARG_WITH(dsssl,[ --with-dsssl[=DIR] Use DSSSL in DIR/{html,print}/docbook.dsl],
+[
+ if test -f "$withval/html/docbook.dsl"; then
+ DSSSL_DIR=$withval
+ fi
+],[
+ AC_MSG_CHECKING(for docbook.dsl)
+ for d in /usr/share/sgml/docbook/stylesheet/dsssl/modular \
+ /usr/share/sgml/docbook/dsssl-stylesheets-1.* \
+ /usr/lib/sgml/stylesheet/dsssl/docbook/nwalsh
+ do
+ if test -f $d/html/docbook.dsl; then
+ AC_MSG_RESULT($d)
+ DSSSL_DIR=$d
+ break
+ fi
+ done
+ if test -z "$DSSSL_DIR"; then
+ AC_MSG_RESULT(Not found)
+ fi
+])
+dnl
+
+AC_ARG_ENABLE(zoom,[ --disable-zoom disable ZOOM (for old C++ compilers)],[enable_zoom=$enableval],[enable_zoom=yes])
+AM_CONDITIONAL(ZOOM, test $enable_zoom = "yes")
+