Recursive variable `KBUILD_CFLAGS' references itself (eventually).

Recursive variable `KBUILD_CFLAGS' references itself (eventually).

[Dave Jones]

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


	Dave

-- 
http://www.codemonkey.org.uk

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

[Sam Ravnborg]

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

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

[Dave Jones]

On Mon, Dec 31, 2007 at 02:16:19PM +0100, Sam Ravnborg wrote:

 > > Trying to do a 32bit build on a 64bit machine.
 > > I did..
 > >   make ARCH=i386 oldconfig
 > >   make ARCH=i386 arch/x86/
 > 
 > 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?

Still happens for me with the latest tree from git.

$ make ARCH=i386 arch/x86/
  HOSTCC  scripts/kconfig/conf.o
  HOSTLD  scripts/kconfig/conf
scripts/kconfig/conf -s arch/x86/Kconfig
  CHK     include/linux/version.h
  CHK     include/linux/utsrelease.h
  UPD     include/linux/utsrelease.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

 > 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.

$ git diff Makefile
$

(This tree is completely pristine, no changes at all)

	Dave

-- 
http://www.codemonkey.org.uk

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

[Sam Ravnborg]

On Mon, Dec 31, 2007 at 11:10:21AM -0500, Dave Jones wrote:
> On Mon, Dec 31, 2007 at 02:16:19PM +0100, Sam Ravnborg wrote:
> 
>  > > Trying to do a 32bit build on a 64bit machine.
>  > > I did..
>  > >   make ARCH=i386 oldconfig
>  > >   make ARCH=i386 arch/x86/
>  > 
>  > 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?
> 
> Still happens for me with the latest tree from git.
> 
> $ make ARCH=i386 arch/x86/
>   HOSTCC  scripts/kconfig/conf.o
>   HOSTLD  scripts/kconfig/conf
> scripts/kconfig/conf -s arch/x86/Kconfig
>   CHK     include/linux/version.h
>   CHK     include/linux/utsrelease.h
>   UPD     include/linux/utsrelease.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

Can reproduce it now. Will take a look tomorrow.

	Sam

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

[Sam Ravnborg]

On Mon, Dec 31, 2007 at 11:10:21AM -0500, Dave Jones wrote:
> On Mon, Dec 31, 2007 at 02:16:19PM +0100, Sam Ravnborg wrote:
> 
>  > > Trying to do a 32bit build on a 64bit machine.
>  > > I did..
>  > >   make ARCH=i386 oldconfig
>  > >   make ARCH=i386 arch/x86/
>  > 
>  > 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?
> 
> Still happens for me with the latest tree from git.
> 
> $ make ARCH=i386 arch/x86/

There is no easy fx for this one.
You try to build one of the non-standard directories and it just
fails because arch/x86/Makefile is not a regular Kbuild file.

Try with any other directory (almost any other) and it works.
Considered unfortunate but not a bug - so I will not try to fix it.

	Sam

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

[Jan Engelhardt]

On Jan 24 2008 22:27, Sam Ravnborg wrote:
>>  > > Trying to do a 32bit build on a 64bit machine.
>>  > > I did..
>>  > >   make ARCH=i386 oldconfig
>>  > >   make ARCH=i386 arch/x86/
>>  > 
>>  > 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?
>> 
>> Still happens for me with the latest tree from git.
>> 
>> $ make ARCH=i386 arch/x86/
>
>There is no easy fx for this one.
>You try to build one of the non-standard directories and it just
>fails because arch/x86/Makefile is not a regular Kbuild file.
>
>Try with any other directory (almost any other) and it works.
>Considered unfortunate but not a bug - so I will not try to fix it.

So, how are we going to build only arch/x86/ right now with kbuild?

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

[Sam Ravnborg]

On Thu, Jan 24, 2008 at 10:31:18PM +0100, Jan Engelhardt wrote:
> 
> On Jan 24 2008 22:27, Sam Ravnborg wrote:
> >>  > > Trying to do a 32bit build on a 64bit machine.
> >>  > > I did..
> >>  > >   make ARCH=i386 oldconfig
> >>  > >   make ARCH=i386 arch/x86/
> >>  > 
> >>  > 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?
> >> 
> >> Still happens for me with the latest tree from git.
> >> 
> >> $ make ARCH=i386 arch/x86/
> >
> >There is no easy fx for this one.
> >You try to build one of the non-standard directories and it just
> >fails because arch/x86/Makefile is not a regular Kbuild file.
> >
> >Try with any other directory (almost any other) and it works.
> >Considered unfortunate but not a bug - so I will not try to fix it.
> 
> So, how are we going to build only arch/x86/ right now with kbuild?

It is not poissible.

You can do:
make arch/x86/kernel/
make arch/x86/lib/
make arch/x86/mm/

But there is no easy way to build them in one go.

	Sam