[Buildroot] Systemd default console

[Thomas Petazzoni]

On Fri, 20 Sep 2019 11:47:08 -0300
Carlos Santos <unixmania at gmail.com> wrote:

> > -   busybox creates the link
> > /etc/systemd/system/getty.target.wants/console-getty.service, which
> > starts a getty on ttyS0
> > -   systemd itself create
> > /run/systemd/generator/getty.target.wants/serial-getty at ttyS0.service
> > automatically (no idea when and how)
> >
> > in and output is perfectly garbled until one of those services is killed.
> > Given that systemd automatically picks up the getty from the
> > commandline, is there any reason for busybox to setup /dev/console?  
> 
> Do not use BR2_TARGET_GENERIC_GETTY_PORT with systemd.

There's a whole bunch of logic at
https://git.buildroot.org/buildroot/tree/package/systemd/systemd.mk#n435
to do stuff depending on the value of BR2_TARGET_GENERIC_GETTY_PORT. So
it seems kind of odd to recommend to not use
BR2_TARGET_GENERIC_GETTY_PORT with systemd. Shouldn't we fix what's in
systemd.mk so that it works as expected ?

Thomas
-- 
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com