Use install-julia.sh [branch-name] in before_install. For example,
wget -q -O /tmp/install-julia.sh "https://raw.githubusercontent.com/sunoru/julia-icc-travis/master/install-julia.sh"
/tmp/install-julia.sh release-0.3
Use julia-VERSION to run julia, e.g. julia-release-0.3 foo.jl. The defalt version of julia is 0.4.
You can build multiple versions of julia by call the install-julia.sh with different parameters for several times.
Command julia indicates the last installed version of julia.
However it takes too much time so please compile one version every time.
Use https://raw.githubusercontent.com/sunoru/julia-icc-travis/master/install-icc.sh to only install the Intel compilers.
See https://github.com/nemequ/icc-travis for details.
Do not forget to use . ~/.bashrc to load the environmental variables when installation completed.
To the extent possible under law, the author(s) of this script have waived all copyright and related or neighboring rights to this work. For details, see the CC0 1.0 Universal Public Domain Dedication for details.