Rpi kernel compilation
Raspberry PI kernel compilation
You can compile the kernel on the board itself, but you can also cross compile on a standard Linux machine (or maybe even on Windows machines?) .
The following documents my attempts at compiling the raspberry pi kernel.
getting the compiler
On Ubuntu Oneiric getting the arm cross compiler can be as easy as:
sudo apt-get install gcc-4.6-arm-linux-gnueabi
(TODO: Is this the right one? More packages required? I did this a while ago! TODO: Other distributions?)
getting the sources
create a directory where you can work on the raspberry pi software. I called mine "raspberrypi". Then clone the git repository.
mkdir raspberrypi cd raspberrypi git clone https://github.com/raspberrypi/linux.git cd linux
using the patch
TODO: write this.
Next you have to configure the kernel:
cp arch/arm/configs/bcmrpi_cutdown_defconfig .config make ARCH=arm CROSS_COMPILE=/usr/bin/arm-linux-gnueabi- oldconfig
Then building the kernel:
make ARCH=arm CROSS_COMPILE=/usr/bin/arm-linux-gnueabi- -k
You can use the "-j" flag to improve compilation time. If you have a dual core machine you can use "-j 3", for a quad core machine you can use "-j 6", and so on.
on the Raspberry pi itself
Get the sources just like above.
TODO: write the rest of this section.