Cross Compiling

Cross Compiling

This page shows how to cross compile for CellBE/ppc64

Gentoo

Server: Emerge distcc crossdev & env-update & source /etc/profile & crossdev -t powerpc64-unknown-linux-gnu

Client: http://www.gentoo.org/doc/en/cross-compiling-distcc.xml (Because it's much better written than anything I could do)

Ubuntu/Debian

Install required packages

sudo apt-get install build-essential gawk bison flex automake libtool cvs lzma ncurses-dev texinfo patch g++ gcj

Create directories and compile crosstool

mkdir /home/user/crosstool
mkdir /home/user/kernel
mkdir -p /home/user/toolchain/powerpc
tar xvjf crosstool-ng-1.10.0.tar.bz2
cd crosstool-ng-1.10.0/
./configure --prefix=/home/user/crosstool/
make && make install

• /home/user/crosstool-ng-1.10.0/ -> crostool-ng sources
• /home/user/crosstool/ -> Crosstool install directory with binaries
• /home/user/toolchain/ -> Directory where the binary will be installed
• /home/user/toolchain/powerpc/ -> Crosstool files generated in this tutorial for powerpc
• /home/user/toolchain/x-tools/ -> generated toolchain
• /home/user/kernel -> Place were graf_chokolo's linux kernel tarball will be saved

Add the enviromental variable to bash

sudo gedit /etc/bash.bashrc

Add the following line at the end of the file

"export PATH="${PATH}:/home/user/crosstool/bin/"

Download graf_chokolo's kernel

cd /home/user/kernel
wget -O linux-2.6.tar.gz http://git.dukio.com/gitweb.cgi?p=linux-2.6\;a=snapshot\;h=HEAD\;sf=tgz

Copy the sample configuration file and modify it

cp /home/user/crosstool/lib/ct-ng-1.10.0/samples/powerpc64-unknown-linux-gnu/* /home/user/toolchain/powerppc/
mv crosstool.config .config
cd /home/user/toolchain/powerppc/
ct-ng menuconfig

I've added graf_chokolos kernel

• Operating System -> Linux Kernel version -> custom tarball
• Operating System -> Path to custom tarball -> /home/user/kernel/linux-2.6.tar.gz

or

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Start from scratch and configure the toolchain the way you want

cd /home/user/toolchain/powerppc/
ct-ng menuconfig

Compile ppc64 toolchain

unset LD_LIBRARY_PATH LIBRARY_PATH CPATH
export LD_LIBRARY_PATH LIBRARY_PATH CPATH
ct-ng build

Wait for some time until it finishes compiling

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Testing if your toolchain works properly

export PATH="${PATH}:/home/user/toolchain/x-tools/powerpc64-unknown-linux-gnuspe/bin/"
powerpc64-unknown-linux-gnuspe-gcc test.c -o test

More info: http://www.ibm.com/developerworks/linux/tutorials/l-embedded-distro/section3.html