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SubjectRe: [PATCH -next 2/2] kbuild: fix for updated LZ4 tool with the new streaming format
On Mon, 15 Jul 2013 15:08:20 -0700 "H. Peter Anvin" <hpa@zytor.com> wrote:

> On 07/15/2013 03:03 PM, Andrew Morton wrote:
> >
> > I don't know how to do this. Any suggestions?
> >
> > It has to be done at `make config' time. We'd need to probe for the
> > presence of lz4c and then.... what?
> >
> > Is there any precedent for this?
> >
> > I don't think we can just ignore the absence of lz4c - the user has
> > selected a config which his system cannot build. The problem lies
> > within randconfig itself.
> >
>
> We keep running over the need to be able to have kconfig run tests on
> the build system (for toolchain support or for optional tools needed);
> running them in the Makefiles (i.e. at Kbuild time) is simply too late.
>

Would it make sense to extend Kconfig's `depends'?

depends on $(shell-command)

I don't know how practical that would be to implement...


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