linux-kernel - Re: [PATCH 0/11 v3] enable "make ARCH=x86"

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Message-ID: <20071110035025.GI26163@stusta.de>
Date:	Sat, 10 Nov 2007 04:50:25 +0100
From:	Adrian Bunk <bunk@...nel.org>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Sam Ravnborg <sam@...nborg.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 0/11 v3] enable "make ARCH=x86"

On Fri, Nov 09, 2007 at 10:23:23PM -0500, Jeff Garzik wrote:
> Sam Ravnborg wrote:
>> This is the patch that get rid of ARCH=i386 and ARCH=x86_64
>> and introduce ARCH=x86.
>> It touches several files but the changes are all one or two-liners.
>>
>>       x86: drop backward compatibility symlinks to i386/boot and x86_64/boot
>>       kbuild: sanity check the specified arch
>
>
> IMO it negatives impacts the workflow when you -remove- the ability to set 
> 32/64-bit on the make command line.
>
> Building and testing for both architectures now requires the additional 
> step of editing .config, which is a clear workflow negative impact at least 
> for me.
>
> I switch between other cross-compiled arches (alpha, usually) on the 
> makefile command line
>
> Yes, I know other 32/64-bit arches require .config editing.  That doesn't 
> change the basic fact that this is a workflow regression.

With KCONFIG_ALLCONFIG you can avoid the editing of the .config and set 
32/64-bit on the make command line - and it's not limited to the 
32/64-bit choice:

$ cat /home/jeff/myi386config
CONFIG_HIGHMEM64G=y
CONFIG_X86_32=y 
CONFIG_SMP=n
CONFIG_PCI=n
CONFIG_IPV6=m
$ make allyesconfig KCONFIG_ALLCONFIG=/home/jeff/myi386config

> 	Jeff

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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