goals

This project provides a simple to install and use cross compiler environment,

• simple installation of cross compiling environment e.g ./install.sh

• easy to workflow with target board e.g xcCompileRun render.cpp

• support for cmake, with cmake toolchain

• use modern tools clang-10, llvm, cmake

requirements

supported OS are:

• macOS
• Linux (debian based e.g. deb/ubuntu)

it would be easy to add other linux variants windows could probably be done using gnu/cygwin tools however, I dont have the time.... but Im happy to accept pull requests from others :)

installation

see install.md

usage

installs and runs by default using location: ~/xcBela bela hostname : 192.168.7.2 , default for usb

you can override with environment variables, if using a different bela, or scripts placed somewhere else e.g.

export XC_IP=salt.local
export XC_ROOT=~/projects/xcBela

note: when these are stored in ~/.xcBela.config, by install.sh, and xcSetEnv, so only need to be done once, or if you are changing target etc.

setup environment

. $XC_ROOT/xcSetEnv

usage note: . (dot) - do not run as a script directly

commands

xcExec remotecmd - execute command on remote xcCopy localfile remotefile - copy local file to remote xcCompile patch - compile all cpp in directory, executable name path xcRun patch - run (local executable) patch on remote xcCompileRun patch - compile local file and run on remote xcScope - bring up scope xcGui - bring up gui

compilation

the compile scripts are very simple

xcCompile patch will compile all cpp files in current directory, and then produce an output (executable) file called patch note: exe name can be anything, note: compiling takes no arguments, see below.

xcRun patch -h will copy the 'patch' executable to the target machine and run it passing the arguments to it (-h in this example) ctrl-C will quit it, and kill the process (patch)

xcCompileRun patch -h will call xcCompile then xcRun, note: how args are for the running on patch, not the compiler

Using Compiler and Link flags if you want to use compiler and link flags, use the env vars CPPFLAGS and LDFLAGS e.g.

CPPFLAGS="-v --save-temps" LDFLAGS=-Wl,--verbose=1 xcCompile abc

note: how I use quotes for multiple flags

using with cmake

included in this project is a template which can be used as a cmake toolchain, see cmakefaq.md

using Bela tools

Bela commands

the 'usual' bela command line scripts are also available (and on the path), e.g. we can disable the ide with

ide.sh stop

Accessing Bela IDE

my main intention is not to use the IDE for development so editing and compiling. but it still has a couple of useful features I will use (assuming, Ive not disabled ide at that time ;) )

note: shortcuts assume chromium-browser on linux

Oscilloscope shortcut: xcScope this is available directly in a browser using: http://bela.local/scope

Bela Patch GUI bela now supports web user interfaces shortcut: xcGui this can be access in the browser using: http://bela.local/gui

Credits & Resources

article on cross-compiling on mac https://medium.com/@haraldfernengel/cross-compiling-c-c-from-macos-to-raspberry-pi-in-2-easy-steps-23f391a8c63

cross compile script from by Andrew Capon, can be found here: https://github.com/AndrewCapon/OSXBelaCrossCompiler

Bela wiki on remote compilation with Eclipse https://github.com/BelaPlatform/Bela/wiki/Compiling-Bela-projects-in-Eclipse