Using Q on Bela

This is a minimal program that uses the Q library from within a Bela project. It is a port of Q's delay.cpp example. Hopefully a comparison between the two should give you an idea of what the process was.

Pre-requisites

This program assumes that you have the Q library installed in /root/Q on your Bela board.

Build options

As of image v0.3.x, Bela ships with clang++-3.9 and g++-6.3, none of which fully supports the c++17 standard required by Q. However, by forcing Bela to use g++ and telling it to use c++17 (which it only supports experimentally and partially), allows this program to build. Additionally, the compiler needs to know where to find the header files for the Q library. All of this is achieved by passing the following options to make:

CPPFLAGS="-I ~/Q/q_lib/include -I ~/Q/infra/include -std=c++17" COMPILER=gcc

These options are already saved in this project's settings.json, so if you run it from the IDE, it should build and run out of the box (assuming the pre-requisites are met). If you are building the program from the command-line by invoking make, you should do:

make CPPFLAGS="-I ~/Q/q_lib/include -I ~/Q/infra/include -std=c++17" COMPILER=gcc PROJECT=Bela-Q run

If you are using one of the Bela scripts, you should pass these options after the -m flag (and be careful with the use of quotes). For instance

build_project.sh -m 'CPPFLAGS="-I ~/Q/q_lib/include -I ~/Q/infra/include -std=c++17" COMPILER=gcc' Bela-Q