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Date: Wed, 11 Apr 2012 20:49:13 +0200
From: Michael Olbrich <m.olbrich@pengutronix.de>
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Subject: Re: [ptxdist] [PATCH] rules/kernel: switch to xz compression
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On Sun, Apr 08, 2012 at 02:51:39PM +0200, Andreas Bie=DFmann wrote:
> On 08.04.12 10:45, Michael Olbrich wrote:
> > On Fri, Apr 06, 2012 at 12:55:29PM +0200, Andreas Bie=DFmann wrote:
> >> kernel is provided since 2.6.0 with xz compression. The main aim to us=
e xz
> >> compression here is to save significant space for local mirrors.
> >>
> >> linux-3.3.tar.bz2 is about 75 MiB
> >> linux-3.3.tar.xz is about 63 MiB
> >>  -> saves about 15 %
> > =

> > True, and I like that too. However, if I apply this, all BSPs on ptxdist
> > master will download a new kernel and complain about a wrong md5sum.
> > But I guess, people using master should be able to deal with this.
> =

> So how about ...
> =

> >> index 336b76d..4a45a3f 100644
> >> --- a/rules/kernel.make
> >> +++ b/rules/kernel.make
> >> @@ -31,7 +31,7 @@ endif
> >>  #
> >>  KERNEL			:=3D linux-$(KERNEL_VERSION)
> >>  KERNEL_MD5		:=3D $(call remove_quotes,$(PTXCONF_KERNEL_MD5))
> >> -KERNEL_SUFFIX		:=3D tar.bz2
> =

> +KERNEL_SUFFIX :=3D tar.$(call ptx/ifdef,
> PTXCONF_KERNEL_XZ_COMPRESSION,xz,bz2)
> =

> >>  KERNEL_DIR		:=3D $(KERNEL_BDIR)/$(KERNEL)
> >>  KERNEL_CONFIG		:=3D $(call remove_quotes, $(PTXDIST_PLATFORMCONFIGDIR=
)/$(PTXCONF_KERNEL_CONFIG))
> >>  KERNEL_LICENSE		:=3D GPLv2
> =

> would that be better for existing BDPs?

No, unless there is a real problem I prefer a clean break.

Michael

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