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Subject: Re: [PATCH 2/2] kbuild: add shell cache
References: <1467052107-26735-1-git-send-email-rabin@rab.in>
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From: Michal Marek <mmarek@suse.com>
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Date: Fri, 22 Jul 2016 13:56:03 +0200
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To: Rabin Vincent <rabin@rab.in>
Cc: linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org

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