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

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Date:	Mon, 8 Feb 2016 17:28:22 -0500 (EST)
From:	Nicolas Pitre <nicolas.pitre@...aro.org>
To:	Sam Ravnborg <sam@...nborg.org>
cc:	Michal Marek <mmarek@...e.com>, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org, Al Viro <viro@...IV.linux.org.uk>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH 1/6] kbuild: record needed exported symbols for modules

On Mon, 8 Feb 2016, Sam Ravnborg wrote:

> >  
> > +# List module undefined symbols
> > +ifdef CONFIG_TRIM_UNUSED_EXPSYMS
> > +cmd_undef_syms = $(NM) $@ | sed -n 's/^ \+U \(.*\)/\1/p' | xargs echo
> > +else
> > +cmd_undef_syms = echo
> > +endif
> Use ":" as a "do nothing" cammand. Then you do not emit an empty line.

I wanted to emit that empty line though. This way it is less likely that 
it'll be reused for other purposes.


Nicolas