Linux 3.4.0 : recipe for target 'kernel/fork.o' failed

Rocket18 · 07-28-2018, 08:01 PM

Hello all!

Trying to compile linux kernel 3.4.0 for an older phone on my Ubuntu 16.04 machine.

Getting the error

In file included from kernel/fork.c:79:0:
include/trace/events/sched.h:249:2: error: #error "Unsupported NR_CPUS for lb tracepoint."
#error "Unsupported NR_CPUS for lb tracepoint."
^

Don't know whats going wrong so any help would be appreciated!

pan64 · 07-29-2018, 04:30 AM

NR_CPUS is most probably the number of CPUs, and probably you need to set it (configure it), because the current value is unsupported.

Rocket18 · 07-29-2018, 02:19 PM

Quote:

Originally Posted by pan64

NR_CPUS is most probably the number of CPUs, and probably you need to set it (configure it), because the current value is unsupported.

Thanks! That solved my problem, unfortunatly many more are behind it!