Compile modules on 64-bit Linux kernel system for 686 Linux kernel

Compile modules on 64-bit Linux kernel system for 686 Linux kernel

[Paul Menzel]

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Hi guys,

( please CC )


I am running Debian Sid/unstable with a 32-bit userspace with a 64-bit
kernel [1]. I want to compile the v4l-dvb modules for a 686 kernel [2]
on this system.

I installed the header files for the 686 kernel [3], but running

$ ARCH=686 make
make -C /tmp/v4l-dvb/v4l 
make[1]: Entering directory `/tmp/v4l-dvb/v4l'
perl
scripts/make_config_compat.pl /lib/modules/2.6.30-1-amd64/source ./.myconfig ./config-compat.h
creating symbolic links...
make -C firmware prep
make[2]: Entering directory `/tmp/v4l-dvb/v4l/firmware'
make[2]: Leaving directory `/tmp/v4l-dvb/v4l/firmware'
make -C firmware
make[2]: Entering directory `/tmp/v4l-dvb/v4l/firmware'
  CC  ihex2fw
Generating vicam/firmware.fw
Generating dabusb/firmware.fw
Generating dabusb/bitstream.bin
Generating ttusb-budget/dspbootcode.bin
Generating cpia2/stv0672_vp4.bin
Generating av7110/bootcode.bin
make[2]: Leaving directory `/tmp/v4l-dvb/v4l/firmware'
Kernel build directory is /lib/modules/2.6.30-1-amd64/build
make -C /lib/modules/2.6.30-1-amd64/build SUBDIRS=/tmp/v4l-dvb/v4l
modules
make[2]: Entering directory `/usr/src/linux-headers-2.6.30-1-amd64'
[…]

still uses the 64-bit modules in /lib/modules/2.6.30-1-amd64 and the
files in /usr/src/linux-headers-2.6.30-1-amd64.

I do not even know if this is the correct way.

Can someone of you please enlighten me?


Thanks,

Paul


[1] http://packages.debian.org/de/sid/linux-image-2.6.30-1-amd64
[2] http://packages.debian.org/de/sid/linux-image-2.6.30-1-686
[3] http://packages.debian.org/de/sid/linux-headers-2.6.30-1-686

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Re: Compile modules on 64-bit Linux kernel system for 686 Linux kernel

[Mauro Carvalho Chehab]

Em Thu, 27 Aug 2009 13:28:57 +0200
Paul Menzel <paulepanter@users.sourceforge.net> escreveu:

> Hi guys,
> 
> ( please CC )
> 
> 
> I am running Debian Sid/unstable with a 32-bit userspace with a 64-bit
> kernel [1]. I want to compile the v4l-dvb modules for a 686 kernel [2]
> on this system.
> 
> I installed the header files for the 686 kernel [3], but running
> 
> $ ARCH=686 make
> make -C /tmp/v4l-dvb/v4l 
> make[1]: Entering directory `/tmp/v4l-dvb/v4l'
> perl
> scripts/make_config_compat.pl /lib/modules/2.6.30-1-amd64/source ./.myconfig ./config-compat.h
> creating symbolic links...
> make -C firmware prep
> make[2]: Entering directory `/tmp/v4l-dvb/v4l/firmware'
> make[2]: Leaving directory `/tmp/v4l-dvb/v4l/firmware'
> make -C firmware
> make[2]: Entering directory `/tmp/v4l-dvb/v4l/firmware'
>   CC  ihex2fw
> Generating vicam/firmware.fw
> Generating dabusb/firmware.fw
> Generating dabusb/bitstream.bin
> Generating ttusb-budget/dspbootcode.bin
> Generating cpia2/stv0672_vp4.bin
> Generating av7110/bootcode.bin
> make[2]: Leaving directory `/tmp/v4l-dvb/v4l/firmware'
> Kernel build directory is /lib/modules/2.6.30-1-amd64/build
> make -C /lib/modules/2.6.30-1-amd64/build SUBDIRS=/tmp/v4l-dvb/v4l
> modules
> make[2]: Entering directory `/usr/src/linux-headers-2.6.30-1-amd64'
> […]
> 
> still uses the 64-bit modules in /lib/modules/2.6.30-1-amd64 and the
> files in /usr/src/linux-headers-2.6.30-1-amd64.
> 
> I do not even know if this is the correct way.
> 
> Can someone of you please enlighten me?

This is not the correct way. You'll need to also point where do you expect it to get the headers:
This should do the trick:
	make ARCH=i386 release DIR=<directory_name>
	make ARCH=i386 allmodconfig
	make ARCH=i386
> 
> 
> Thanks,
> 
> Paul
> 
> 
> [1] http://packages.debian.org/de/sid/linux-image-2.6.30-1-amd64
> [2] http://packages.debian.org/de/sid/linux-image-2.6.30-1-686
> [3] http://packages.debian.org/de/sid/linux-headers-2.6.30-1-686




Cheers,
Mauro

Re: Compile modules on 64-bit Linux kernel system for 686 Linux kernel

[Paul Menzel]

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Dear Mauro,


Am Donnerstag, den 27.08.2009, 08:58 -0300 schrieb Mauro Carvalho Chehab:
> Em Thu, 27 Aug 2009 13:28:57 +0200 Paul Menzel <paulepanter@users.sourceforge.net> escreveu:

> > I am running Debian Sid/unstable with a 32-bit userspace with a 64-bit
> > kernel [1]. I want to compile the v4l-dvb modules for a 686 kernel [2]
> > on this system.
> > 
> > I installed the header files for the 686 kernel [3], but running
> > 
> > $ ARCH=686 make

[…]

> > I do not even know if this is the correct way.
> > 
> > Can someone of you please enlighten me?
> 
> This is not the correct way. You'll need to also point where do you expect it to get the headers:
> This should do the trick:
> 	make ARCH=i386 release DIR=<directory_name>
> 	make ARCH=i386 allmodconfig
> 	make ARCH=i386

Thanks, I should have read INSTALL more carefully. I did

$ make ARCH=i686 release VER=2.6.30-1-686
$ make ARCH=i686 allmodconfig
$ make ARCH=i686

which worked like a charm.


Thanks,

Paul

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