Trying to compile a different kernel version

[sardiskan]

I need to compile the linux-wlan-ng package to put on another system, but the other system uses kernel 2.4.27 and gentoo uses 2.4.26-gentoo-r13. I'd like to boot to a 2.4.27 kernel so I can compile this module so I can move it to the other machine. The reason I am doing this in this way is because the machine I'm wanting to move the files too does not have a make command and it is not suggested to put a make command on this distro. I downloaded the kernel source for 2.4.27 and did the following commands on it:

make clean
make mrproper
make menuconfig (configed kernel)
make bzImage
make modules
make module_install

From there I attempted to put the vmlinux image under the /boot directory and point and entry in grub to THAT image. Well on reboot, pointing that that image...it doesn't boot...I get some error about the vmlinux not being executable. I'm not sure what to do. I've even tried creating a bootable floppy with the bzImage file but that doesn't work either. I'm probably just missing something that I don't know how to do and that the documentation for compiling kernels assumes I should know.

How can I make this kernel boot my gentoo distro? Or whats the best way to compile this package under the 2.4.27 kernel?

Thanks.
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Unless a grain of wheat falls to the ground and dies, it remains only a single seed.

[NeddySeagoon]

sardiskan,

2.4 kernels need make dep too but if you missed that I don't think you would have got a bzImage.

You normally do not need to run the kernel you want to compile against. Often it is suffcient to point the new package a t a properly (from the packages point of view) configured kernel so it can find the things it needs.

There will be an option you pass the package ./configure step. That means you either do the build outside of portage or you work out how to add things to the ebuild ./configure step.
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Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

[dsd]

no need to be running 2.4.27

just make sure /usr/src/linux points to (compiled) linux-2.4.27 sources
then emerge the package and take the module file. but be warned that it might not work, there are issues with doing things like this..
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http://dev.gentoo.org/~dsd

[sardiskan]

Yes, I did run a "make dep" I forgot to include that

So from what I understand. All I need to do is download the kernel source, configure and compile it. Rename the current /usr/src/linx tree to something else and move the newly configed/compiled kernel source into the /usr/src/linux directory, then just compile the software pointing to the /usr/src/linux directory as the kernel tree. Am I right? If that is the case...that is SOOO much simpler than trying to dual boot two different kernels under the same distro.
_________________
Unless a grain of wheat falls to the ground and dies, it remains only a single seed.

[Sith_Happens]

First emerge the new kernel sources, they will be installed in /usr/src. Then change the directory /usr/src/linux points to like so

[NeddySeagoon]

sardiskan,

Its not a case of move an rename anything.
Its delete the symbolic link /usr/src/linux and create a new one pointing to the new kernel tree.

Do