README.md

A Bela project which loads FAUST code from a .dsp file, compiles it on the fly and runs it. The FAUST code is converted to LLVM IR and then JIT'ed to executable binary on the fly. This will only work on a Bela image v0.3 or above.

Prerequisites: tl; dr:

apt-get install libssl-dev llvm-3.9-dev libmicrohttp-dev
update-alternatives --install /usr/bin/llvm-config llvm-config /usr/bin/llvm-config-3.9 1
git clone https://github.com/grame-cncm/faust.git && git submodule update --init && cd faust && make all && make install

Long version:

• connect Bela to the internet (e.g.: https://github.com/BelaPlatform/Bela/wiki/Connecting-Bela-to-wifi)
• install libssl-dev and libmicrohttp-dev
• install LLVM libraries compiled with -DLLVM_ENABLE_RTTI=ON (i.e.: get them with apt-get or compile them yourself: the binaries you would download from the LLVM website would not be suitable).
• bonus step: get a distcc setup working to speed up compilation (e.g.: see [here](https://github.com/BelaPlatform/bela_newBlog/blob/master/docs/_drafts/2017-10-31-cross-compiling.markdown and then export CXX="distcc /usr/local/bin/clang++-3.9-arm").
• compile and install the master branch of https://github.com/grame-cncm/faust

Usage:

• clone this repo in a Bela project (e.g.: /root/Bela/project/bela-faust0-jit)
• at build time pass the following flags to make:

LDLIBS="-lfaust `llvm-config --ldflags --libs all --system-libs` -ltinfo -lssl -lcrypto"

(note if you put the above in the Bela IDE, omit the " ")

• at runtime, pass the name of the .dsp file as a command-line argument: --faust faust.dsp

The above options are already set in the settings.json and will therefore be used automatically if you build and run this project from within the Bela IDE.