Compiling stripped down kernel deletes modules used by other kernels

yougene · 11-28-2005, 08:57 PM

I've been trying to figure out the kernel lately on my slackware 10.2 install. So I have several kernels setup in lilo. The problem I'm having is when I tried to configure a stripped down kernel and installed it and the modules it deleted the modules my normal kernel uses.

Is there anyway to keep the kernels from stepping on each others toes?

Tinkster · 11-28-2005, 09:12 PM

Only if they're all from the same source, and you didn't modify
"Extraversion" in the Makefile... in other words: works as designed.

Cheers,
Tink

yougene · 11-28-2005, 09:16 PM

Hmmmm,

Could anyone recommend a book or a site, that can inform me on this matter?

Tinkster · 11-28-2005, 09:23 PM

No book needed ... from the little info you provided I
assume that you're trying to compile varied versions
of the same kernel.

You CAN do that, but if you don't edit the Makefile in
your one kernels directory before every compile, changing
the "EXTRAVERSION" for each version you'll get exactly
what you describe...

Code:

cat /usr/src/linux-2.4.31/Makefile
VERSION = 2
PATCHLEVEL = 4
SUBLEVEL = 31
EXTRAVERSION = <your version-info goes here!>

Cheers,
Tink

Razze · 11-28-2005, 10:32 PM

There is no longer a need to edit the Makefile. This feature is now available in the kernel options as well. The setting can be found under

General Setup ->
() Local version - append to kernel release

Tinkster · 11-28-2005, 11:33 PM

Not in 2.4 kernels ...

yougene · 11-29-2005, 09:40 AM

Thanks that did it!

I'm not too sure exactly what it did. Does linux keep tabs on every extraversion name I pass to the Makefile or something?

keefaz · 11-29-2005, 09:50 AM

Yes the complete version number (with extra number if any) is built into kernel
and eventually is displayed in /proc/version

Tinkster · 11-29-2005, 11:38 AM

And, in this case most importantly, it's also part of the
path to /lib/modules/<kernel-version>

Cheers,
Tink

yougene · 11-29-2005, 02:03 PM

Ahhh, Crystal clear.

Thanks alot guys.

gnashley · 11-30-2005, 01:44 AM

´You can also just have the standard modules and use various kernels -just don't install the modules when you build a new kernel