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

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Message-ID: <4D5303C0.7010907@pavlinux.ru>
Date:	Thu, 10 Feb 2011 00:14:40 +0300
From:	Pavel Vasilyev <pavel@...linux.ru>
To:	Andy Isaacson <adi@...apodia.org>
Subject: Re: CONFIG_KERNEL_XZ obscure build failure if xz(1) not installed

09.02.2011 23:38, Andy Isaacson пишет:
> On Wed, Feb 09, 2011 at 11:07:32PM +0300, Pavel Vasilyev wrote:
>>> The failure is obscured by trailing make output, and since a broken
>>> bzImage is created, "make install" succeeds, and the first visible
> [snip]
>>  :)
>>
>> Signed-off-by: Pavel Vasilyev <pavel@...linux.ru>
>> ---
>> diff --git a/scripts/xz_wrap.sh b/scripts/xz_wrap.sh
>> index 17a5798..5ec9d36 100644
>> --- a/scripts/xz_wrap.sh
>> +++ b/scripts/xz_wrap.sh
>> @@ -20,4 +20,4 @@ case $ARCH in
>>         sparc)          BCJ=--sparc ;;
>>  esac
>>
>> -exec xz --check=crc32 $BCJ --lzma2=$LZMA2OPTS,dict=32MiB
>> +exec xz --check=crc32 $BCJ --lzma2=$LZMA2OPTS,dict=32MiB || exit 1
>>
> 
> I get the same behavior with and without your patch, tested with both
> bash and dash.  (FWIW, /bin/sh on my systems is a symlink to /bin/dash.)
> 

# mv /usr/bin/xz /
# rm arch/x86/boot/compressed/vmlinux.bin*
# rm arch/x86/boot/bzImage
# make
# make
  CHK     include/linux/version.h
  CHK     include/generated/utsrelease.h
  CALL    scripts/checksyscalls.sh
  CHK     include/generated/compile.h
  CHK     include/linux/version.h
make[2]: `scripts/unifdef' is up to date.
  XZKERN  arch/x86/boot/compressed/vmlinux.bin.xz
/media/kernel/linux-2.6/scripts/xz_wrap.sh: line 23: exec: xz: not found
make[2]: *** [arch/x86/boot/compressed/vmlinux.bin.xz] Error 1
make[1]: *** [arch/x86/boot/compressed/vmlinux] Error 2
make: *** [bzImage] Error 2

# make install
sh /media/kernel/linux-2.6/arch/x86/boot/install.sh 2.6.38-rc4+
arch/x86/boot/bzImage \
        System.map "/boot"

 *** Missing file: arch/x86/boot/bzImage
 *** You need to run "make" before "make install".

make[1]: *** [install] Error 1
make: *** [install] Error 2

All work, without and with patch.  :-/

# sh --version
GNU bash, version 4.1.9(1)-release (x86_64-suse-linux-gnu)

-- 

                                                         Pavel.
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