Editing Cross Compiling
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Latest revision | Your text | ||
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=Cross Compiling= | =Cross Compiling= | ||
This page shows how to cross compile for CellBE/ppc64 | This page shows how to cross compile for CellBE/ppc64 | ||
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Client: http://www.gentoo.org/doc/en/cross-compiling-distcc.xml (Because it's much better written than anything I could do) | Client: http://www.gentoo.org/doc/en/cross-compiling-distcc.xml (Because it's much better written than anything I could do) | ||
== | == Ubuntu/Debian == | ||
===Know your host System=== | ===Know your host System=== | ||
To be improve the building time it is a good | To be improve the building time it is a good Idea to know how many cores your processor has and have that number of concurrent jobs | ||
to know how many cores you have available use | |||
<prep> | |||
grep -c '^processor' /proc/cpuinfo | |||
</pre> | |||
This will be used later on while building the toolchain ct-ng build.#number of cores and while compiling export CONCURRENCY_LEVEL=#number of cores | This will be used later on while building the toolchain ct-ng build.#number of cores and while compiling export CONCURRENCY_LEVEL=#number of cores | ||
Example for a quadcore system | Example for a quadcore system | ||
<pre> | |||
ct-ng build.4 | ct-ng build.4 | ||
CONCURRENCY_LEVEL=4 | CONCURRENCY_LEVEL=4 | ||
</ | </pre> | ||
===Installing Cross Tool=== | ===Installing Cross Tool=== | ||
Install required packages | Install required packages | ||
<pre> | |||
sudo apt-get install build-essential gawk bison flex automake libtool cvs lzma ncurses-dev texinfo patch g++ gcj | |||
</pre> | |||
Create directories and compile crosstool | |||
<pre> | |||
Create directories and compile crosstool | |||
mkdir /home/user/crosstool | mkdir /home/user/crosstool | ||
mkdir /home/user/kernel | mkdir /home/user/kernel | ||
mkdir -p /home/user/toolchain/powerpc | mkdir -p /home/user/toolchain/powerpc | ||
tar xvjf crosstool-ng-1.10.0.tar.bz2 | |||
cd crosstool-ng | cd crosstool-ng-1.10.0/ | ||
./configure --prefix=/home/user/crosstool | ./configure --prefix=/home/user/crosstool/ | ||
make && make install | make && make install | ||
</ | </pre> | ||
* /home/user/crosstool-ng/ -> ''' | * /home/user/crosstool-ng-1.10.0/ -> '''crostool-ng sources''' | ||
* /home/user/crosstool/ -> '''Crosstool install directory with binaries''' | * /home/user/crosstool/ -> '''Crosstool install directory with binaries''' | ||
* /home/user/toolchain/ -> '''Directory where the binary will be installed''' | * /home/user/toolchain/ -> '''Directory where the binary will be installed''' | ||
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* /home/user/toolchain/x-tools/ -> '''generated toolchain''' | * /home/user/toolchain/x-tools/ -> '''generated toolchain''' | ||
* /home/user/kernel -> '''Place were graf_chokolo's linux kernel tarball will be saved''' | * /home/user/kernel -> '''Place were graf_chokolo's linux kernel tarball will be saved''' | ||
Add the enviromental variable to bash | |||
<pre> | |||
sudo gedit /etc/bash.bashrc | |||
</pre> | |||
Add the following lines at the end of the file | |||
"export PATH="${PATH}:/home/user/crosstool/bin/" | |||
"export PATH="${PATH}:/home/user/x-tools/powerpc64-unknown-linux-gnu/bin/" | |||
===Patching crosstool=== | ===Patching crosstool=== | ||
For some reason, the compiler removes the symbolic links for lib64 | |||
For some reason, the compiler removes the symbolic links for lib64 | |||
The following patch corrects this behaviour allowing the toolchain to work properly without further modifications | The following patch corrects this behaviour allowing the toolchain to work properly without further modifications | ||
====Required Patch==== | ====Required Patch==== | ||
save the following file as """important.patch""" in home/ | save the following file as """important.patch""" in home/usr/crosstool/lib/ct-ng-1.10.0/scripts/build | ||
<pre> | <pre> | ||
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</pre> | </pre> | ||
Go to that directory and apply the patch | Go to that directory and apply the patch | ||
<pre> | |||
cd /home/ | cd /home/usr/crosstool/lib/ct-ng-1.10.0/scripts/build | ||
patch < important.patch | patch < important.patch | ||
</ | </pre> | ||
===Creating a cross compiler toolchain for ppc64=== | ===Creating a cross compiler toolchain for ppc64=== | ||
Download graf_chokolo's kernel | Download graf_chokolo's kernel | ||
<pre> | |||
cd /home/user/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 | |||
</pre> | |||
</ | |||
Copy the sample configuration file and modify it | Copy the sample configuration file and modify it | ||
<pre> | |||
cp /home/ | cp /home/usr/crosstool/lib/ct-ng-1.10.0/samples/powerpc64-unknown-linux-gnu/* /home/usr/toolchain/powerpc/ | ||
cd /home/ | cd /home/usr/toolchain/powerpc/ | ||
mv crosstool.config .config | mv crosstool.config .config | ||
cd /home/ | cd /home/usr/toolchain/powerpc/ | ||
ct-ng menuconfig | ct-ng menuconfig | ||
</ | </pre> | ||
I've added graf_chokolos kernel | I've added graf_chokolos kernel | ||
*Operating System -> Linux Kernel version -> custom tarball | *Operating System -> Linux Kernel version -> custom tarball | ||
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---- | ---- | ||
Start from scratch and configure the toolchain the way you want | Start from scratch and configure the toolchain the way you want | ||
<pre> | |||
cd /home/user/toolchain/powerppc/ | cd /home/user/toolchain/powerppc/ | ||
ct-ng menuconfig | ct-ng menuconfig | ||
</ | </pre> | ||
Compile ppc64 toolchain | Compile ppc64 toolchain | ||
<pre> | |||
unset LD_LIBRARY_PATH LIBRARY_PATH CPATH | unset LD_LIBRARY_PATH LIBRARY_PATH CPATH | ||
export LD_LIBRARY_PATH LIBRARY_PATH CPATH | export LD_LIBRARY_PATH LIBRARY_PATH CPATH | ||
ct-ng build | ct-ng build | ||
</ | </pre> | ||
'''Wait for some time until it finishes compiling''' | '''Wait for some time until it finishes compiling''' | ||
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===Testing if your toolchain works properly=== | ===Testing if your toolchain works properly=== | ||
<pre> | |||
export PATH="${PATH}:/home/user/x-tools/powerpc64-unknown-linux-gnu/bin/" | export PATH="${PATH}:/home/user/x-tools/powerpc64-unknown-linux-gnu/bin/" | ||
powerpc64-unknown-linux-gnuspe-gcc test.c -o test | powerpc64-unknown-linux-gnuspe-gcc test.c -o test | ||
</ | </pre> | ||
More info: http://www.ibm.com/developerworks/linux/tutorials/l-embedded-distro/section3.html | More info: http://www.ibm.com/developerworks/linux/tutorials/l-embedded-distro/section3.html | ||
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Download openssl sources | Download openssl sources | ||
<pre> | |||
wget http://www.openssl.org/source/openssl-0.9.8g.tar.gz | |||
</pre> | |||
unpack the sources | unpack the sources | ||
<pre> | |||
tar xvjf openssl-0.9.8g.tar.gz | |||
</pre> | |||
Go to openssl source path | Go to openssl source path | ||
<pre> | |||
cd openssl-0.9.8g/ | |||
</pre> | |||
Change the following lines in the Makefile | Change the following lines in the Makefile | ||
<pre> | <pre> | ||
INSTALLTOP= | INSTALLTOP=/x-tools/powerpc64-unknown-linux-gnu/powerpc64-unknown-linux-gnu/sysroot/usr | ||
OPENSSLDIR= | OPENSSLDIR=/x-tools/powerpc64-unknown-linux-gnu/powerpc64-unknown-linux-gnu/sysroot/usru | ||
CC= powerpc64-unknown-linux-gnu-gcc | CC= powerpc64-unknown-linux-gnu-gcc | ||
AR= | AR=xpowerpc64-unknown-linux-gnu-ar $(ARFLAGS) r | ||
RANLIB= powerpc64-unknown-linux-gnu-ranlib | RANLIB= powerpc64-unknown-linux-gnu-ranlib | ||
</pre> | </pre> | ||
Finally | Finally | ||
<pre> | |||
make | |||
</pre> | |||
===Cross compiling graf_chokolo's tools=== | ===Cross compiling graf_chokolo's tools=== | ||
Make sure you have a working toolchain and openssl installed | Make sure you have a working toolchain and openssl installed | ||
Comment the current compiler and add your cross compiler in our case "powerpc64-unknown-linux-gnu-gcc" | Comment the current compiler and add your cross compiler in our case "powerpc64-unknown-linux-gnu-gcc" | ||
<pre> | <pre> | ||
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</pre> | </pre> | ||
finally | |||
<pre> | |||
make | |||
</pre> | |||
you can find graf_chokolo tools and scripts here | |||
http://git | http://git.dukio.com/gitweb.cgi | ||
===Compiling graf_chokolo's kernel and making a deb package=== | ===Compiling graf_chokolo's kernel and making a deb package=== | ||
Go to the directory where you saved your kernel, untar it and go to the kernel source directory | Go to the directory where you saved your kernel, untar it and go to the kernel source directory | ||
<pre> | |||
cd /home/user/kernel | cd /home/user/kernel | ||
tar xfvz linux-2.6.tar.gz | tar xfvz linux-2.6.tar.gz | ||
cd linux-2.6 | cd linux-2.6 | ||
</ | </pre> | ||
It is a good measure to clean the source directory | It is a good measure to clean the source directory | ||
<pre> | |||
make clean | make clean | ||
make-kpkg clean | make-kpkg clean | ||
</ | </pre> | ||
Export set ARCH=powerpc | Export set ARCH=powerpc | ||
And set the right number of concurrent jobs to be done this is used to improve the building time | And set the right number of concurrent jobs to be done this is used to improve the building time. | ||
<pre> | |||
export ARCH=powerpc | export ARCH=powerpc | ||
export CONCURRENCY_LEVEL=4 | export CONCURRENCY_LEVEL=4 | ||
</ | </pre> | ||
Use graf_chokolo config file | Use graf_chokolo config file | ||
<pre> | |||
cp ps3_linux_config .config | cp ps3_linux_config .config | ||
make oldconfig | make oldconfig | ||
</ | </pre> | ||
You can customize your by using make menuconfig | You can customize your by using make menuconfig | ||
Now lets compile and package our kernel | Now lets compile and package our kernel | ||
<pre> | |||
make-kpkg --arch=powerpc --cross-compile=powerpc64-unknown-linux-gnu- --rootcmd=fakeroot --initrd --append-to-version=-graf kernel_image kernel_source kernel_headers | |||
</pre> | |||