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

Nicolas Pitre
2016-02-09T04:36:22Z

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