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From: Andrew Morton <akpm@linux-foundation.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Kyungsik Lee <kyungsik.lee@lge.com>,
	Michal Marek <mmarek@suse.cz>,
	linux-kernel@vger.kernel.org, linux-kbuild@vger.kernel.org,
	x86@kernel.org, celinux-dev@lists.celinuxforum.org,
	linux-arm-kernel@lists.infradead.org, hyojun.im@lge.com,
	chan.jeong@lge.com, raphael.andy.lee@gmail.com,
	"H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar <mingo@elte.hu>,
	Thomas Gleixner <tglx@linutronix.de>,
	Russell King <rmk@arm.linux.org.uk>,
	Borislav Petkov <bp@alien8.de>,
	Florian Fainelli <florian@openwrt.org>,
	Yann Collet <yann.collet.73@gmail.com>,
	Chanho Min <chanho.min@lge.com>
Subject: Re: [PATCH -next 2/2] kbuild: fix for updated LZ4 tool with the new streaming format
Date: Mon, 15 Jul 2013 15:03:42 -0700	[thread overview]
Message-ID: <20130715150342.35f7620ffe0835e3e2bc37d0@linux-foundation.org> (raw)
In-Reply-To: <20130712075602.GA4002@gmail.com>

On Fri, 12 Jul 2013 09:56:02 +0200 Ingo Molnar <mingo@kernel.org> wrote:

> 
> * Kyungsik Lee <kyungsik.lee@lge.com> wrote:
> >  quiet_cmd_lz4 = LZ4     $@
> >  cmd_lz4 = (cat $(filter-out FORCE,$^) | \
> > -	lz4demo -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
> > +	lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
> >  	(rm -f $@ ; false)
> 
> None of the major distros I tried has the lz4 or lz4c binary available, 
> and this breaks randconfig builds:
> 
>   /bin/sh: lz4c: command not found
> 
> If:
> 
>  CONFIG_HAVE_KERNEL_LZ4=y
>  CONFIG_KERNEL_LZ4=y
>  CONFIG_RD_LZ4=y
>  CONFIG_LZ4_DECOMPRESS=y
>  CONFIG_DECOMPRESS_LZ4=y
> 
> If a utility is not widely available yet and if the utility is not in the 
> kernel proper, could you please at least make sure that randconfig does 
> not stumble over non-buildable kernels?

I don't know how to do this.  Any suggestions?

It has to be done at `make config' time.  We'd need to probe for the
presence of lz4c and then....  what?

Is there any precedent for this?

I don't think we can just ignore the absence of lz4c - the user has
selected a config which his system cannot build.  The problem lies
within randconfig itself.

WARNING: multiple messages have this Message-ID
From: akpm@linux-foundation.org (Andrew Morton)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH -next 2/2] kbuild: fix for updated LZ4 tool with the new streaming format
Date: Mon, 15 Jul 2013 15:03:42 -0700	[thread overview]
Message-ID: <20130715150342.35f7620ffe0835e3e2bc37d0@linux-foundation.org> (raw)
In-Reply-To: <20130712075602.GA4002@gmail.com>

On Fri, 12 Jul 2013 09:56:02 +0200 Ingo Molnar <mingo@kernel.org> wrote:

> 
> * Kyungsik Lee <kyungsik.lee@lge.com> wrote:
> >  quiet_cmd_lz4 = LZ4     $@
> >  cmd_lz4 = (cat $(filter-out FORCE,$^) | \
> > -	lz4demo -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
> > +	lz4c -l -c1 stdin stdout && $(call size_append, $(filter-out FORCE,$^))) > $@ || \
> >  	(rm -f $@ ; false)
> 
> None of the major distros I tried has the lz4 or lz4c binary available, 
> and this breaks randconfig builds:
> 
>   /bin/sh: lz4c: command not found
> 
> If:
> 
>  CONFIG_HAVE_KERNEL_LZ4=y
>  CONFIG_KERNEL_LZ4=y
>  CONFIG_RD_LZ4=y
>  CONFIG_LZ4_DECOMPRESS=y
>  CONFIG_DECOMPRESS_LZ4=y
> 
> If a utility is not widely available yet and if the utility is not in the 
> kernel proper, could you please at least make sure that randconfig does 
> not stumble over non-buildable kernels?

I don't know how to do this.  Any suggestions?

It has to be done at `make config' time.  We'd need to probe for the
presence of lz4c and then....  what?

Is there any precedent for this?

I don't think we can just ignore the absence of lz4c - the user has
selected a config which his system cannot build.  The problem lies
within randconfig itself.

  parent reply	other threads:[~2013-07-15 22:03 UTC|newest]

Thread overview: 110+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-05-06  8:42 [PATCH -next 1/2] arm: Remove enforced Os flag for LZ4 decompressor Kyungsik Lee
2013-05-06  8:42 ` Kyungsik Lee
2013-05-06  8:42 ` [PATCH -next 2/2] kbuild: fix for updated LZ4 tool with the new streaming format Kyungsik Lee
2013-05-06  8:42   ` Kyungsik Lee
2013-05-06  9:51   ` Borislav Petkov
2013-05-06  9:51     ` Borislav Petkov
2013-07-10  8:12     ` Geert Uytterhoeven
2013-07-10  8:12       ` Geert Uytterhoeven
2013-07-10  8:12       ` Geert Uytterhoeven
2013-07-10  9:36       ` Borislav Petkov
2013-07-10  9:36         ` Borislav Petkov
2013-07-10  9:36         ` Borislav Petkov
2013-07-10 18:28         ` Markus Trippelsdorf
2013-07-10 18:28           ` Markus Trippelsdorf
2013-07-10 18:28           ` Markus Trippelsdorf
2013-07-10 18:28           ` Markus Trippelsdorf
2013-07-10 20:01           ` Borislav Petkov
2013-07-10 20:01             ` Borislav Petkov
2013-07-10 20:01             ` Borislav Petkov
2013-07-10 20:01             ` Borislav Petkov
2013-07-11  4:34           ` Kyungsik Lee
2013-07-11  4:34             ` Kyungsik Lee
2013-07-11  4:34             ` Kyungsik Lee
2013-07-11  4:34             ` Kyungsik Lee
2013-07-11  9:46             ` [PATCH] .gitignore: ignore *.lz4 files Markus Trippelsdorf
2013-07-11  9:46               ` Markus Trippelsdorf
2013-07-11  9:46               ` Markus Trippelsdorf
2013-07-11  9:46               ` Markus Trippelsdorf
2013-07-12  7:56   ` [PATCH -next 2/2] kbuild: fix for updated LZ4 tool with the new streaming format Ingo Molnar
2013-07-12  7:56     ` Ingo Molnar
2013-07-12  8:01     ` Borislav Petkov
2013-07-12  8:01       ` Borislav Petkov
2013-07-12 10:13       ` Ingo Molnar
2013-07-12 10:13         ` Ingo Molnar
2013-07-12 10:23         ` Borislav Petkov
2013-07-12 10:23           ` Borislav Petkov
2013-07-12 11:18           ` Andrew Morton
2013-07-12 11:18             ` Andrew Morton
2013-07-12 12:06             ` Ingo Molnar
2013-07-12 12:06               ` Ingo Molnar
2013-07-12 12:13             ` Borislav Petkov
2013-07-12 12:13               ` Borislav Petkov
2013-07-12 12:34               ` Florian Fainelli
2013-07-12 12:34                 ` Florian Fainelli
2013-07-12 12:34                 ` Florian Fainelli
2013-07-12 12:46                 ` Borislav Petkov
2013-07-12 12:46                   ` Borislav Petkov
2013-07-12 12:46                   ` Borislav Petkov
2013-07-15 22:03     ` Andrew Morton [this message]
2013-07-15 22:03       ` Andrew Morton
2013-07-15 22:08       ` H. Peter Anvin
2013-07-15 22:08         ` H. Peter Anvin
2013-07-16  7:47         ` Andrew Morton
2013-07-16  7:47           ` Andrew Morton
2013-07-16  7:56           ` Andrew Morton
2013-07-16  7:56             ` Andrew Morton
2013-07-16  8:08             ` Yann E. MORIN
2013-07-16  8:08               ` Yann E. MORIN
2013-07-16  8:27               ` Andrew Morton
2013-07-16  8:27                 ` Andrew Morton
2013-07-16  9:05                 ` Borislav Petkov
2013-07-16  9:05                   ` Borislav Petkov
2013-07-16  9:12                   ` Yann E. MORIN
2013-07-16  9:12                     ` Yann E. MORIN
2013-07-16  9:22                     ` Borislav Petkov
2013-07-16  9:22                       ` Borislav Petkov
2013-07-16  9:32                       ` Yann E. MORIN
2013-07-16  9:32                         ` Yann E. MORIN
2013-07-16  9:38                         ` Borislav Petkov
2013-07-16  9:38                           ` Borislav Petkov
2013-07-16  9:45                           ` Yann E. MORIN
2013-07-16  9:45                             ` Yann E. MORIN
2013-07-16  9:59                             ` Borislav Petkov
2013-07-16  9:59                               ` Borislav Petkov
2013-07-16 10:04                               ` Florian Fainelli
2013-07-16 10:04                                 ` Florian Fainelli
2013-07-16 10:04                                 ` Florian Fainelli
2013-07-16 18:04               ` Sam Ravnborg
2013-07-16 18:04                 ` Sam Ravnborg
2013-07-17 21:16                 ` Sam Ravnborg
2013-07-17 21:16                   ` Sam Ravnborg
2013-07-17 21:44                   ` Borislav Petkov
2013-07-17 21:44                     ` Borislav Petkov
2013-07-17 22:30                   ` Yann E. MORIN
2013-07-17 22:30                     ` Yann E. MORIN
2013-07-17 23:22                     ` H. Peter Anvin
2013-07-17 23:22                       ` H. Peter Anvin
2013-07-18  8:02                       ` Geert Uytterhoeven
2013-07-18  8:02                         ` Geert Uytterhoeven
2013-07-18  8:02                         ` Geert Uytterhoeven
2013-07-18  7:22                     ` Geert Uytterhoeven
2013-07-18  7:22                       ` Geert Uytterhoeven
2013-07-18  7:22                       ` Geert Uytterhoeven
2013-07-18  7:34                       ` Andrew Morton
2013-07-18  7:34                         ` Andrew Morton
2013-07-18  7:34                         ` Andrew Morton
2013-07-18  7:47                         ` Yann E. MORIN
2013-07-18  7:47                           ` Yann E. MORIN
2013-07-18  7:47                           ` Yann E. MORIN
2013-07-18  7:52                           ` Andrew Morton
2013-07-18  7:52                             ` Andrew Morton
2013-07-18  7:52                             ` Andrew Morton
2013-07-18 20:47                     ` Sam Ravnborg
2013-07-18 20:47                       ` Sam Ravnborg
2013-07-16  9:13             ` Florian Fainelli
2013-07-16  9:13               ` Florian Fainelli
2013-07-16  9:13               ` Florian Fainelli
2013-07-16  9:25               ` Yann E. MORIN
2013-07-16  9:25                 ` Yann E. MORIN
2013-07-16  9:25                 ` Yann E. MORIN

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