buildkernel failure because ctfconvert not installed

[Yuri Pankov]

Trond Endrestøl wrote:
> On Thu, 9 Apr 2020 10:56+0200, Gary Jennejohn wrote:
> 
>> OK, I figured it out.
>>
>> I used to have MK_CTF=no in src.conf, but I recently changed it to
>> WITH_CTF=no.
> 
> It's either WITH_xxx=yes or WITHOUT_xxx=yes.

Or even WITH_xxx= or WITHOUT_xxx=, src.conf(5) explicitly states that 
value is NOT checked:

The values of variables are ignored regardless of their setting; even if 
  they would be set to "FALSE" or "NO".  The presence of an option 
causes it to be honored by make(1).

>> /sys/conf/kern.post.mk checks whether MK_CTF is no and apparently
>> does not invoke ctfconvert if that is the case.
>>
>> I put MK_CTF=no back into src.conf.
>>
>> So, now everything works without having cftconvert installed.
>