dnl Headers.
AC_CHECK_HEADERS([float.h])
+AC_CHECK_HEADERS([stdint.h])
dnl Libraries.
AC_SEARCH_LIBS([socket], [socket])
AC_SEARCH_LIBS([gethostbyname], [nsl resolv])
+dnl Functions.
+AC_CHECK_FUNCS([snprintf])
+
dnl Types.
AC_CHECK_TYPE([socklen_t], [int])