Index: configure.in
===================================================================
RCS file: /cvs/hal/PolicyKit/configure.in,v
retrieving revision 1.8
diff -p -u -r1.8 configure.in
--- configure.in	6 Jun 2006 14:48:27 -0000	1.8
+++ configure.in	9 Jun 2006 01:11:47 -0000
@@ -150,8 +150,6 @@ AC_CHECK_FUNCS(getgrouplist)
 
 # DocBook Documentation
 
-AC_PATH_PROG(XMLTO, xmlto, no)
-
 AC_MSG_CHECKING([whether to build DocBook documentation])
 
 if test x$DOCBOOK = xno ; then
@@ -172,6 +170,10 @@ if test x$enable_docbook_docs = xyes; th
     if test x$have_docbook = xno; then
 	AC_MSG_ERROR([Building DocBook docs explicitly required, but DocBook not found])
     fi
+    AC_PATH_PROG(XMLTO, xmlto, no)
+    if test x"$XMLTO" = xno; then
+      AC_MSG_ERROR([xmlto executable not found; needed for building DocBook docs])
+    fi
 fi
 
 AM_CONDITIONAL(DOCBOOK_DOCS_ENABLED, test x$enable_docbook_docs = xyes)