Time to work on helping the Gnome Doc project, first step is reintegrating
the SGML DocBook parser in libxml2 distrib:
- DOCBparser.c DOCBparser.h testDocbook.c configure.in Makefile.am
  xmlversion.h.in: started (re)integrating the DocBook SGML parser.
- SAX.[ch]: cleanup and updates for DocBook
- debugXML.c parser.h tree.[ch] valid.c xpath.c: small macro or
  ex SGML identifier changes
- valid.c: removed a static unused function.
Daniel
diff --git a/configure.in b/configure.in
index fb02848..b7e368f 100644
--- a/configure.in
+++ b/configure.in
@@ -235,9 +235,9 @@
     if test "${with_mem_debug}" = "" ; then
         with_mem_debug="yes"
     fi
-dnl    if test "${with_docbook}" = "" ; then
-dnl        with_docbook="yes"
-dnl    fi
+    if test "${with_docbook}" = "" ; then
+        with_docbook="yes"
+    fi
     if test "${with_xptr}" = "" ; then
         with_xptr="yes"
     fi
@@ -297,6 +297,19 @@
 AC_SUBST(WITH_HTML)
 AC_SUBST(HTML_OBJ)
 
+AC_ARG_WITH(docbook, [  --with-docbook         Add Docbook SGML support (off)])
+if test "$with_docbook" = "yes" ; then
+    echo Enabling Docbook support
+    WITH_DOCB=1
+    DOCB_OBJ="DOCBparser.o"
+else    
+    WITH_DOCB=0
+    DOCB_OBJ=
+fi
+AC_SUBST(WITH_DOCB)
+AC_SUBST(DOCB_OBJ)
+
+
 AC_ARG_WITH(xpath, [  --with-xpath            Add the XPATH support (on)])
 if test "$with_xpath" = "no" ; then
     echo Disabling XPATH support