[Buildroot] [PATCH 1 of 2 v2] infra: introduce suitable-extractor helper function

[Thomas Petazzoni]

Dear Thomas De Schampheleire,

On Thu, 01 Aug 2013 22:55:47 +0200, Thomas De Schampheleire wrote:

> diff --git a/package/pkg-utils.mk b/package/pkg-utils.mk
> --- a/package/pkg-utils.mk
> +++ b/package/pkg-utils.mk
> @@ -62,6 +62,8 @@ INFLATE.tbz2 = $(BZCAT)
>  INFLATE.tgz  = $(ZCAT)
>  INFLATE.xz   = $(XZCAT)
>  INFLATE.tar  = cat
> +# suitable-extractor(filename): returns extractor based on suffix
> +suitable-extractor = $(firstword $(INFLATE$(suffix $(1))))

Do you know why we need this $(firstword ...) call here? In all places
in was using directly $(INFLATE$(...)), except in the package
infrastructure where it was doing this firstword additional call.

It was added by Peter in 2c6390a5d0c01420879e9f23bc89afb19976da4a.

Ideas?

Thomas
-- 
Thomas Petazzoni, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com