Re: [[PATCH v2 for-4.14]] m4: use test instead of []

[Ian Jackson <ian.jackson@xxxxxxxxxx>]

Roger Pau Monne writes ("Re: [[PATCH v2 for-4.14]] m4: use test instead of []"):
> There's a double [] enclosure in the subject
> 
> On Tue, Jun 02, 2020 at 09:01:38AM +0000, Wei Liu wrote:
> > It is reported that [] was removed by autoconf, which caused the
> > following error:
> > 
> >   ./configure: line 4681: -z: command not found
> > 
> > Switch to test. That's what is used throughout our configure scripts.
> > Also put the variable expansion in quotes.
> > 
> > Signed-off-by: Wei Liu <wl@xxxxxxx>
> > Reported-by: Bertrand Marquis <Bertrand.Marquis@xxxxxxx>
> > Fixes: 8a6b1665d987 ("configure: also add EXTRA_PREFIX to {CPP/LD}FLAGS")
> > Signed-off-by: Wei Liu <wl@xxxxxxx>
> 
> There's a double SoB ;)
> 
> Reviewed-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

Pushed, thanks.

Ian.