To build for i386 host use:
git clone https://github.com/danielkot/danio-gcc cd danio-gcc ./runit-all.sh 32
To build for x86_64 host use:
git clone https://github.com/danielkot/danio-gcc cd danio-gcc ./runit-all.sh 64
and wait several hours to compile for many arches (look at .travis.yml)
.travis.yml
My continuous integration at Travis-CI