HowTo Build Your Own Custom Kernel

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An i686 host running some flavor of Linux.

Download All the Required Tarballs

First, download the cross toolchain (arm-2005q3-2-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2), mkimage, and the source archive (linux-2.6.12_lsp.1.7.8.tgz):

$ cd /some_directory
$ wget -H -c
$ wget -H -c
$ wget -H -c

If the files were not at the locations indicated above, fear not! Just look in every directory on the server (like I did).

Prepare the Environment

Then, install (i.e., untar) the toolchain and mkimage:

$ cd /some_path
$ tar -xjf /some_directory/arm-2005q3-2-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2
$ cd bin
$ export PATH=`pwd`:$PATH
$ cp -p /some_directory/mkimage .
$ chmod a+rx mkimage

Strictly speaking mkimage should not go into /some_path/bin. But, hey...

Now untar the source of the kernel in some directory:

$ cd /some_directory
$ tar -xzf linux-2.6.12_lsp.1.7.8.tgz
$ cd linux-2.6.12_lsp.1.7.8

Ready, Get Set, Build!

While still in some_directory, type the following:

$ make menuconfig
[pick and choose the desired features...]
$ make uImage

The kernel will be ready at arch/arm/boot/uImage.