+AC_SUBST(ac_configure_args)
+# Can we make status line about the compilation result?
+AC_CHECK_PROG(MD5SUM,md5sum,`which md5sum`)
+if test x$MD5SUM != xno ; then
+ build_version=`find -name '*.[ch]' |grep -v src/ucontext_stack.h | grep -v src/gras_config.h |\
+ xargs cat| $MD5SUM | sed 's/ .*$//'`
+else
+ build_version="no_md5sum_binary"
+fi
+build_id="$PACKAGE ver=$VERSION build=$build_version args=\"$ac_configure_args\""
+AC_SUBST(build_id)
+