Subject: [PATCH -next 2/2] kbuild: fix for updated LZ4 tool with the new streaming format

From: [email-masked] (H. Peter Anvin)
Date: Mon, 15 Jul 2013 15:08:20 -0700

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.

	-hpa