+AC_CHECK_FUNCS([gettimeofday memmove socket strdup strtol])
+
+SYSINFO_FCT=
+AC_CHECK_FUNC(sysinfo,
+ [SYSINFO_FCT='1' AC_DEFINE([HAVE_SYSINFO_FCT],[1],[Use sysinfo])],
+ [AC_MSG_WARN("sysinfo function not present")])
+AM_CONDITIONAL(SYSINFO_FCT, test -n "$SYSINFO_FCT")