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

[Nicolas Pitre]

On Tue, 9 Feb 2016, Al Viro wrote:

> 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?

Yep, I like it better.

Although I might be tempted by sed -n 's/^ \+U //p' to avoid the "non 
portable" mention that comes with -r (do we actually care?).


Nicolas