[Buildroot] How to change compiler to newer in old build-root

[Carlos Santos]

> From: "Denis Kotov" <redradist at gmail.com>
> To: "DATACOM" <casantos at datacom.com.br>
> Cc: "buildroot" <buildroot at busybox.net>
> Sent: Thursday, July 12, 2018 7:05:44 PM
> Subject: Re: [Buildroot] How to change compiler to newer in old build-root

> Thank you Carlos for reply,

> Okay, but what if I want to add newer compiler without changing buildroot
> version from 2014 to 2017.
> Is it possible ?

In theory, yes, but you'd need to cherry-pick dozens of commits that
upgraded the compiler support. Notice also that old packages may not compile
with newer compilers.

> And if no how to switch to new version of buildroot automatically. Is it
> possible ?

If you didn't change buildroot itself, yes. If you have local changes you
need to rebase them to a recent version. The best approach is to use a
br2-external, as described in the user manual.

-- 
Carlos Santos (Casantos) - DATACOM, P&D
“Marched towards the enemy, spear upright, armed with the certainty
that only the ignorant can have.” — Epitaph of a volunteer