External Toolchains
From ArmadeusWiki
You will need to use a recent Armadeus release (with Buildroot > 2011.05) to use the following instructions.
Building common toolchains with Buildroot
- create directory where toolchain will be put:
$ sudo mkdir -p /usr/local/armadeus $ sudo chown $USER:$USER /usr/local/armadeus
$ make menuconfig
Build options ----> () Host dir