[Buildroot] Out of tree Linux kernel builds?

Florian Fainelli f.fainelli at gmail.com
Tue Nov 6 04:44:54 UTC 2018


On November 5, 2018 8:35:36 PM PST, Baruch Siach <baruch at tkos.co.il> wrote:
>Hi Florian,
>Florian Fainelli writes:
>> Hi Yann, all,
>> AFAIR a while back you mentioned that you were looking into adding
>> support for out of tree Linux builds. Do you have working patches for
>> that, or you would rather have someone take a stab at doing it?
>What do you mean by "out of tree Linux builds"? Buildroot has supported
>custom kernel tree build since long ago. Did you mean external kernel

I am talking about using Linux's ability to build objects into a different directory than where sources are. This is achieved by using make O=. The idea is that it would avoid using rsync to copy the kernel sources when using a custom build directory because this takes both unnecessary time and space to do the initial copy into build/linux-custom.

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