+AC_MSG_CHECKING([for docbook manpages stylesheet])
+MANPAGES_STYLESHEET=http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl
+AC_PATH_PROGS_FEATURE_CHECK([XSLTPROC_TMP], [xsltproc],
+ AS_IF([`"$ac_path_XSLTPROC_TMP" --nonet "$MANPAGES_STYLESHEET" > /dev/null 2>&1`],
+ [HAVE_MANPAGES_STYLESHEET=yes]))
+if test "x$HAVE_MANPAGES_STYLESHEET" = "xyes"; then
+ AM_CONDITIONAL([HAVE_MANPAGES_STYLESHEET], true)
+ AC_SUBST(MANPAGES_STYLESHEET)
+ AC_MSG_RESULT([yes])
+else
+ AM_CONDITIONAL([HAVE_MANPAGES_STYLESHEET], false)
+ AC_MSG_RESULT([no])
+fi
+
+AM_CONDITIONAL(BUILD_DOCS, [test x$enable_documentation = xyes])