linux-kernel - Re: make headers_install broken for ARCH=m68k in 2.6.29-rc7.

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Message-ID: <49BA0599.6070206@snapgear.com>
Date:	Fri, 13 Mar 2009 17:04:57 +1000
From:	Greg Ungerer <gerg@...pgear.com>
To:	Rob Landley <rob@...dley.net>
CC:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Sam Ravnborg <sam@...nborg.org>, linux-kernel@...r.kernel.org,
	dwmw2@...radead.org, linux-next@...r.kernel.org
Subject: Re: make headers_install broken for ARCH=m68k in 2.6.29-rc7.


Rob Landley wrote:
> On Thursday 12 March 2009 17:40:02 Geert Uytterhoeven wrote:
>> On Thu, Mar 12, 2009 at 22:02, Sam Ravnborg <sam@...nborg.org> wrote:
>>>> And, yes, I can confirm the m68k include/asm/unistd.h from linux-next
>>>> actually has contents, thanks to commit
>>>> 646652bded41f4c3bd375b4e03a25b42da93f40b
>>>>
>>>> Anyway, here's hoping the fix makes it into 2.6.29.
>>> Why not telling the m68k maintainer that you think it should go into
>>> 2.6.29?
> 
> I contacted the headers_install maintainer about a headers_install problem, 
> and was pointed to an existing fix upstream.  This seemed to imply awareness 
> of the problem?
> 
> Happy to follow up more, wasn't aware it was required...
> 
>> There are a few more:
>>
>> param.h:#include "param_no.h"
>> param.h:#include "param_mm.h"
>> ptrace.h:#include "ptrace_no.h"
>> ptrace.h:#include "ptrace_mm.h"
>> setup.h:#include "setup_no.h"
>> setup.h:#include "setup_mm.h"
>> sigcontext.h:#include "sigcontext_no.h"
>> sigcontext.h:#include "sigcontext_mm.h"
>> siginfo.h:#include "siginfo_no.h"
>> siginfo.h:#include "siginfo_mm.h"
>> signal.h:#include "signal_no.h"
>> signal.h:#include "signal_mm.h"
>> swab.h:#include "swab_no.h"
>> swab.h:#include "swab_mm.h"
>>
>> Rob, do these also causes problems?
>> Some (not all) of them are fixed in linux-next.
> 
> I'm trying to build uClibc against the new headers.  I just got around to 
> extracting the patch to fix that one file and testing it in my build system, 
> and this time it broke with:
> 
>   build/cross-compiler-m68k/include/asm/param.h:4:22: error: param_mm.h: No
>   such file or directory
> 
> So yeah, it's still unhappy.  Dunno how many of these are still needed to 
> build the cross compiler, and then who knows what other packages need to 
> build.  Presumably all of it.
> 
> Keep in mind I still haven't found an emulator for m68k that actually boots a 
> linux kernel, so my m68k support is purely theoretical.  (I poked at mess and 
> uae a bit today, but they don't do the "qemu -kernel" thing I'm using for the 
> other targets, and qemu itself only seems to support coldfire and not a full-
> blown m68k.)  I'm following up on this because it's a regression.  Under 
> 2.6.28 the m68k target was building a kernel and root filesystem, but I don't 
> have hardware to run it and have never been able to test it, so isn't really 
> very useful for me.  It's really just there so that if qemu grows the rest of 
> m68k support (patches have been submitted but not merged), I'll be ready.
> 
> P.S.  If you're bored and want to try my test build for yourself:
> 
>   wget http://impactlinux.com/hg/firmware/archive/tip.tar.bz2
>   tar xvjf tip.tar.bz2
>   cd firmware-*
>   USE_UNSTABLE=linux ./build.sh m68k
> 
> Without the USE_UNSTABLE=linux it uses 2.6.28 and builds to completion, with 
> it the build uses 2.6.29-rc7 (or whatever URL's listed as the UNSTABLE= value 
> for linux in download.sh) and it breaks trying to add uClibc to the cross 
> compiler.
> 
> But then anything that actually _uses_ the "make headers_install" output to 
> build stuff against should notice pretty quickly whether or not it #includes 
> missing files.

I pretty quick time I can fix up the last couple on the above list.
But do we want to put all that change into 2.6.29-rc at this point?

Regards
Greg


------------------------------------------------------------------------
Greg Ungerer  --  Principal Engineer        EMAIL:     gerg@...pgear.com
SnapGear, a McAfee Company                  PHONE:       +61 7 3435 2888
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