AC_ARG_ENABLE(tfo-client, AS_HELP_STRING([--enable-tfo-client],[Enable TCP Fast Open for client mode]))
case "$enable_tfo_client" in
yes)
- case `uname` in
+ case ${UNAME:-`uname`} in
Linux) AC_CHECK_DECL([MSG_FASTOPEN], [AC_MSG_WARN([Check the platform specific TFO kernel parameters are correctly configured to support client mode TFO])],
[AC_MSG_ERROR([TCP Fast Open is not available for client mode: please rerun without --enable-tfo-client])],