Cross Compilation Toolchains
There may be other viable toolchains, but the following are the ones used by EuroTech engineers in development and support of our products. They are used to build the pre-compiled kernel and bootloader images. The release pages for the kernels and bootloaders specify which toolchain we used. Other images like filesystems are built natively using the tools available in the full Debian distributions.
While the toolchains below that include libraries such as libc can be used to build user-land applications, we generally recommend that user-land software be built natively on a development system and not cross-compiled. Doing so avoids running into issues where the toolchain references shared libraries that are not part of the target filesystem. Furthermore native compilation avoids the difficulties of configuration for cross-compilation.
Tip: One way to change your environment permanently is to make the changes in the .bashrc file in your home directory. This will allow you to issue commands like arm-linux-gcc and arm-linux-g++ just as you would gcc and g++.
gcc 4.2.3 (EABI)
This toolchain is for building EABI kernels, modules and userland utilities. This is our primary cross compiler for recent 2.6.24 and later kernels.
cd /usr/local/arm
tar -jxf arm-2008q1-126-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2
Set the following variables in your shell environment:export PATH=/usr/local/arm/arm-2008q1/bin:${PATH}
export CROSS_COMPILE=arm-none-linux-gnueabi-Note that while this toolchain can be installed in other locations, other development tools from EuroTech will use the above path.
gcc 4.1.1 (EABI, no libc)
This toolchain is for building EABI kernels and modules. We used this toolchain to build our pre-compiled kernels prior to 2.6.26.cd /
bzcat eabi-gcc-4.1.1.tar.bz2 | tar -x
Set the following variables in your shell environment:export PATH=/opt/crosstool/gcc-4.1.1/bin:${PATH}
export CROSS_COMPILE=arm-unknown-linux-gnueabi-The /opt/crosstool/gcc-4.1.1 path is hardcoded. Do not attempt to install it anywhere else. This is the only location that will work.
Note that this toolchain does not include glibc. It is only intended for cross-compiling linux kernels.
gcc 3.3.2 (OABI)
This is the standard toolchain for pre-EABI software. It is used to build the bootloader and is compatible with the non-armel (EABI) root filesystems.cd /
bzcat arm-linux-gcc-3.3.2.tar.bz2 | tar -x
Set the following variables in your shell environment:export PATH=/usr/local/arm/3.3.2/bin:${PATH}
export CROSS_COMPILE=arm-linux-The /usr/local/arm/3.3.2 path is hardcoded in this toolchain. Do not attempt to install it anywhere else. This is the only path that will work.
gcc 2.95.3
This toolchain was used to build StrongARM kernels. It is not suitable for XScale and later architectures, nor is it suitable for kernels beginning with 2.4.26 due to ARM-linux kernel changes.
Download the LART cross compiler, arm-linux-cross.tar.bz2 (gcc 2.95.3), from the LART website. Instructions for installing this tool-chain are also on the LART website. There are hardcoded paths in this image so you must install it in the /data/lart directory as follows:
mkdir -p /data/lart
cd /data/lart
tar xvf arm-linux-cross.tar
Set the following variables in your shell environment:export PATH=/data/lart/cross/bin:${PATH}
All Forums
Embedded Linux
Cross Compilation Toolchains
Forum Locked
Send Topic to a Friend
Printer Friendly
Posted - 09 Jan 2009 : 14:49:13
