Julia has been compiled on several ARMv7 / Cortex A15 Samsung Chromebooks running Ubuntu Linux under Crouton, Raspberry Pi systems and Odroid boards. This is a work in progress - several tests are known to fail, and backtraces are not available.
Most of the build failures in building the Julia system image are due
to LLVM not being able to detect the correct ARM processor type and
features. Experimenting with different JULIA_CPU_ARCH settings can
help in such cases. For example, this is needed on Raspberry Pi, as
discussed below.
This is the list of known issues on ARM: https://github.com/JuliaLang/julia/labels/arm
In addition to the standard build-essentials toolchain the following
libraries must be installed to build on ARM. On Debian/Ubuntu, use the
following command:
sudo apt-get install libblas3gf liblapack3gf libfftw3-dev libgmp3-dev libmpfr-dev libblas-dev liblapack-dev cmake gcc-4.7 g++-4.7 gfortran libgfortran3
Please start from the standard build instructions, in particular the Linux notes.
Next, create a file in the julia top-level directory called
Make.user with the following contents:
include $(JULIAHOME)/Make.arm
Then proceed to build as described in the primary README. Just typing
make -j 4 at this stage should build julia.
If you run in to issues building LLVM, see these notes: http:https://llvm.org/docs/HowToBuildOnARM.html
The Raspberry Pi ARM CPU is not correctly detected by LLVM. Before
starting the build, export JULIA_CPU_ARCH=arm1176jzf-s. This tells
LLVM that the CPU has VFP support. See the discussion in
#10917.
On Chromebooks, you have to first install Crouton. If you do not have an Ubuntu chroot running on your Chromebook using Crouton, you can do so by following these tutorials.