linux-kernel - Re: CONFIG_KERNEL_XZ obscure build failure if xz(1) not installed

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Message-Id: <201102100001.42769.lasse.collin@tukaani.org>
Date:	Thu, 10 Feb 2011 00:01:42 +0200
From:	Lasse Collin <lasse.collin@...aani.org>
To:	Andy Isaacson <adi@...apodia.org>
Cc:	linux-kernel@...r.kernel.org, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: CONFIG_KERNEL_XZ obscure build failure if xz(1) not installed

On 2011-02-09 Andy Isaacson wrote:
> % make -j4
> ...
>   CC      arch/x86/boot/tty.o
>   CC      arch/x86/oprofile/oprofile.mod.o
>   XZKERN  arch/x86/boot/compressed/vmlinux.bin.xz
> exec: 23: xz: not found

This may have something to do with the shell that "make" uses to run the 
commands. The compression command isn't seen as failed with dash for 
some reason.

It doesn't matter what shell is used to run xz_wrap.sh. The same problem 
exists with other compressors if they are missing.

> commit 100b33c8bd8a3235fd0b7948338d6cbb3db3c63d
[...]
> % ls -l arch/x86/boot/bzImage
> -rw-r--r-- 1 adi adi 1991504 Feb  1 18:41 arch/x86/boot/bzImage

"Feb 1" was about a week ago. The file is a few days older than the 
commit ID, assuming that your clock is set correctly.

-- 
Lasse Collin  |  IRC: Larhzu @ IRCnet & Freenode
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