Hi Ross, after doing a grep to fine the defines, I've found that the defines refer to __USE_TIME_BITS64, instead of _TIME_BITS=64.

The two defined flags appear to do not work "CFLAGS:append = " -D_TIME_BITS=64 -D_USE_TIME_BITS64"

At this time only CFLAGS:append = " -D_USE_TIME_BITS64 " compile successfully.