Beaglebone BSP broken after updating new tools

[punit vara]

Yesterday  I have updated RTEMS toolchain. I am not able to build
beagle bone bsp. Getting following errors :

error: unknown type name 'fd_set'
error: unknown type name 'pid_t'

Any help to troubleshoot this error will be appreciated. All are
mostly data type error. I tried to look at commit history but yet not
found which commit broke the build.

Regards,
Punit vara