linux-kernel - Re: [PATCH 2/2] kbuild: add shell cache

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Date:	Fri, 22 Jul 2016 13:56:03 +0200
From:	Michal Marek <mmarek@...e.com>
To:	Rabin Vincent <rabin@....in>
Cc:	linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] kbuild: add shell cache

On 2016-06-27 20:28, Rabin Vincent wrote:
> Running make results in over 40 invocations of the compiler just during
> processing of the Makefile, before any actual rules are run.
> 
> To reduce this overhead, cache the results of $(shell) calls to the
> compiler.

How do you detect when the compiler gets updated?

Thanks,
Michal