Can't build kernel anymore: amd64 kernel requires linker ifunc support

[Emeric POUPON]

>> make[2]: "/usr/src/sys/conf/kern.pre.mk" line 125: amd64 kernel requires
>> linker ifunc support
>> *** [buildkernel] Error code 1
>>
>> make[1]: stopped in /usr/src
>> 1 error
>>
>>
>>
>> How can I proceed?
> 
> 
> Please consult the ${srctop}/UPDATING file or search back on freebsd
> current mail list.
> 
> Hint: buildworld before kernel
> 

Thanks for your help.

Actually, I already did all the steps described here: https://www.freebsd.org/doc/handbook/makeworld.html with success.
After step 10, I now get this error.
I tried to put WITHOUT_LLD_BOOTSTRAP=yes in /etc/src.conf + rebuild everything with no luck.

Regards,