linux-kernel - Compiling Linux kernel into a build directory

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Message-ID: <CAAMvbhGzj3mTbNoLf55ZF5hdEFwRg5xj1J+g5jP-BW+Hn9kn=Q@mail.gmail.com>
Date:   Fri, 2 Apr 2021 19:29:32 +0100
From:   James Courtier-Dutton <james.dutton@...il.com>
To:     LKML Mailing List <linux-kernel@...r.kernel.org>
Subject: Compiling Linux kernel into a build directory

Hi,

Currently, when one builds the linux kernel, it places .o files all
over the source code tree.
Is there a way to have the linux kernel build, but place all the .o
files into a separate build folder?
Similar to how cmake or ninja work when building C source code.

One possible advantage of this approach is one can then put the build
folder on a ram disk / tmpfs   and be able to compile and test much
quicker.

Kind Regards

James