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Date: Thu, 30 Apr 2015 18:26:22 +0200
From: Volker Armin Hemmann <volkerarmin@googlemail.com>
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Subject: Re: [gentoo-user] CFLAGs for kernel compilation
References: <5540C101.70906@ramses-pyramidenbau.de>
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Am 29.04.2015 um 13:31 schrieb Ralf:
> Hi,
>
> just a short question: I don't like genkernel, I always compile my
> kernel manually using menuconfig.
> So the CFLAGs of my make.conf won't get applied.

as it should be.
>
> What is the best way to (persistently) set the CFLAGs for the kernel
> compilation?

you don't touch kernel cflags.

That simple. The kernel is too important and the people programming it
know what they are doing. Don't set anything. It is retarded.
>
> - I don't like invoking 'CFLAGS="-O2 -march=foo"make'
> - I don't want to set CFLAGS as a persistent environment variable.
> - I don't want to modify the kernel Makefile
>
> Does it actually make sense to set an optimization level and -march?

no