bind gethostbyaddr gethostbyname gethostname inet_ntoa \
setsid setsockopt socket strcasecmp waitpid],,AC_MSG_ERROR([required function missing!]))
-AC_CHECK_FUNCS(inet_aton isdigit sigaction snprintf vsnprintf strdup strlcpy strlcat)
+AC_CHECK_FUNCS(inet_aton isdigit sigaction snprintf vsnprintf strdup strlcpy strlcat strtok_r)
# -- Configuration options --