linux-kernel - Re: [PATCH 2/2] Enable 'make CONFIG

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1313061012.18037.17.camel@i7.infradead.org>
Date:	Thu, 11 Aug 2011 12:10:10 +0100
From:	David Woodhouse <dwmw2@...radead.org>
To:	Michal Marek <mmarek@...e.cz>
Cc:	Arnaud Lacombe <lacombar@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>, linux-kernel@...r.kernel.org,
	linux-kbuild@...r.kernel.org
Subject: Re: [PATCH 2/2] Enable 'make CONFIG_FOO=y oldconfig'

On Thu, 2011-08-11 at 10:58 +0200, Michal Marek wrote:
> I would much rather see include/config/auto.conf reset all configuration
> variables to match what kconfig computed. I.e. use 'undefine CONFIG_FOO'
> instead of '# CONFIG_FOO is not set'. 

That would be cute, but I'm not sure how to undefine something set on
the command line:

$ cat > Makefile <<EOF
undefine BAR

foo:
	echo $(BAR)
EOF
$ make foo BAR=hh
echo hh
hh

Arguably, if someone *does* try something like Arnaud's 
 "make CONFIG_FOO_BAR=y oldconfig bzImage"
.. and it *wasn't* able to set CONFIG_FOO_BAR, then the nicest behaviour
would be to fail, rather than to attempt to build it.

So perhaps we should clean up only those settings inherited from the
environment, and still (as in the patch I sent earlier) refuse to allow
build targets in conjunction with CONFIG overrides on the command line?

-- 
dwmw2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/