linux-kernel - Re: Recursive variable `KBUILD_CFLAGS' references itself (eventually).

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Date:	Mon, 31 Dec 2007 14:16:19 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	Dave Jones <davej@...hat.com>, lkml <linux-kernel@...r.kernel.org>
Subject: Re: Recursive variable `KBUILD_CFLAGS' references itself (eventually).

On Mon, Nov 19, 2007 at 07:14:45PM -0500, Dave Jones wrote:
> Trying to do a 32bit build on a 64bit machine.
> I did..
>   make ARCH=i386 oldconfig
>   make ARCH=i386 arch/x86/
> 
> and got..
> 
> scripts/kconfig/conf -s arch/x86/Kconfig
>   CHK     include/linux/version.h
>   UPD     include/linux/version.h
>   CHK     include/linux/utsrelease.h
>   UPD     include/linux/utsrelease.h
>   SYMLINK include/asm -> include/asm-x86
>   HOSTCC  scripts/kallsyms
>   HOSTCC  scripts/conmakehash
>   CC      scripts/mod/empty.o
>   HOSTCC  scripts/mod/mk_elfconfig
>   HOSTCC  scripts/bin2c
>   MKELF   scripts/mod/elfconfig.h
>   HOSTCC  scripts/mod/file2alias.o
>   HOSTCC  scripts/mod/modpost.o
>   HOSTCC  scripts/mod/sumversion.o
>   HOSTLD  scripts/mod/modpost
>   CC      arch/x86/kernel/asm-offsets.s
>   GEN     include/asm-x86/asm-offsets.h
>   CALL    scripts/checksyscalls.sh
> /mnt/raid0/src/linux-2.6/arch/x86/Makefile_32:43: *** Recursive variable `KBUILD_CFLAGS' references itself (eventually).  Stop.
> make: *** [arch/x86/] Error 2

Hi Dave.

Walking through my mailbox I found this one.
I did not get similar reports and I cannot reproduce it.

Do you continue to see this or had it been fixed somehow?
The only way I can see it heppen is that you have lost
the initial assignmnet in top-level Makefile so
make see this as an '=' assinment and not a ':='
assignment.
The first may not reference itself.

	Sam
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