linux-kernel - Re: [PATCH 3/3] kbuild: check the presence of lzo and lz4 tools when necessary

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Message-ID: <20181017091059.GB22571@zn.tnic>
Date:   Wed, 17 Oct 2018 11:10:59 +0200
From:   Borislav Petkov <bp@...e.de>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
Cc:     Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Bernd Edlinger <bernd.edlinger@...mail.de>,
        Sam Ravnborg <sam@...nborg.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] kbuild: check the presence of lzo and lz4 tools when
 necessary

On Wed, Oct 17, 2018 at 05:59:02PM +0900, Masahiro Yamada wrote:
> >   DESCEND  objtool
> >   CALL    scripts/checksyscalls.sh
> >   CHK     include/generated/compile.h
> >   Building modules, stage 2.
> >   CC      arch/x86/boot/compressed/misc.o
> >   LZ4     arch/x86/boot/compressed/vmlinux.bin.lz4
> > /bin/sh: 1: lz4c: not found
> > make[2]: *** [arch/x86/boot/compressed/Makefile:143: arch/x86/boot/compressed/vmlinux.bin.lz4] Error 1
> > make[2]: *** Waiting for unfinished jobs....
> > make[1]: *** [arch/x86/boot/Makefile:112: arch/x86/boot/compressed/vmlinux] Error 2
> > make: *** [arch/x86/Makefile:290: bzImage] Error 2
> > make: *** Waiting for unfinished jobs....
> >   MODPOST 956 modules
> >
> > What am I missing?
> 
> 
> I have no idea.
> 
> With liblz4-tool package installed on my machine,
> I can build x86 kernel with CONFIG_KERNEL_LZ4.

What happens if you remove the lz4c executable? Do you see the ugly
error above or the "lz4 tool not found. Please install it." message with
my config?

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)