linux-kernel - Re: [PATCH 1/6] kbuild: record needed exported symbols for modules

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Message-ID: <20160209041525.GF17997@ZenIV.linux.org.uk>
Date:	Tue, 9 Feb 2016 04:15:25 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Nicolas Pitre <nicolas.pitre@...aro.org>
Cc:	Michal Marek <mmarek@...e.com>, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org, Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH 1/6] kbuild: record needed exported symbols for modules

On Mon, Feb 08, 2016 at 03:28:30PM -0500, Nicolas Pitre wrote:
> +ifdef CONFIG_TRIM_UNUSED_EXPSYMS
> +cmd_undef_syms = $(NM) $@ | sed -n 's/^ \+U \(.*\)/\1/p' | xargs echo

Umm...  sed -nre 's/^ +U //p', perhaps?