Re: x86_64 kernel with i586 userland plus SDK?

Richard Weinberger

On Wed, Nov 28, 2018 at 9:42 AM Richard Purdie
<richard.purdie@...> wrote:
The system can definitely do it, its just not something we tend to do
very often so its not entirely clear the best way to do it.

What may work is selecting the i586 tune from an x64-64 target machine?

Copying qemux86-64.conf to qemux86-64-2.conf and changing it to have
DEFAULTTUNE ?= "i586" did appear to start to build at least in a quick
test here...
I went this approach for now.
That way I get i586 userland and an SDK with both 32bit and 64bit toolchains.
The SDK offers me multiple environment files to include.

What I don't understand right now is, how can i tell the kernel recipe
that it has
to use the 64bit toolchain to build the kernel?

Any hints?


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