To compile a module for a very old Linux system without a compiler environment and
with no Ethernet connection, because it is the network card driver module I need to compile, I'd
like to use LFS to reach that aim.

I've already tried to build it starting with the LFS LiveCD 6.3, but I could not get the glibc compiled.
The reason is that it seems that you can't use such a new environment to build that old Linux version.

What I need:
modinfo drivers/pci/hotplug/pci_hotplug.ko

...
vermagic: 2.6.18 SMP mod_unload K7 REGPARM gcc-3.2
...

I just have choosen a random module. Every module shows that magic number.

The gcc version of the 6.3 LiveCD is gcc-4.1 and I found a hint after hours of searching for a patch
to solve the compile error I get, that you can't compile a gcc-3.2 version with a compiler newer than
gcc-3.4. I think that makes sense. So now my task is to find a better matching host system and all the
packages fitting the milestones gcc-3.2 and kernel 2.6.18.

Can anybody helpme to get on the right track of building such an old Linux?

Hi

I have put LFS 7.5 on a old machine, I built LFS on a newer machine 1st then transported using usb stick, The machine it went on only had 4 gig HD so it was never gonna build on that.
It all booted on the 1st machine I then had to add all the drivers in the kernel that the older machine would use. I had to strip as much as I could from system, Hope this gives you an idea.
It was still a slow machine wireless was on usb1 no eth0 either, and memory was always at max so was swap, I done it for a challenge.

What are the software requires for the driver?

The software is from Realtek for a RTL8111E Ethernet chip on the motherboard.

http://r8168dl.appspot.com/files/r8168-8.039.00.tar.bz2

The Challenge is that there is no ready made book for this LFS version.