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DEPRECATION WARNING: This tool is being phased out in favor ofArduino CLI, we recommend to use Arduino CLI for new projects.

The source code of the builder has been moved in thearduino-cli repository (as alegacy package) where it will be maintained and developed and eventually moved outside the legacy package once properly integrated in the Arduino CLI codebase.

Thearduino-builder is now just a wrapper ofarduino-cli. We will continue to provide builds of this project for some time to allow a smooth transition period to our users.

A command line tool for compiling Arduino sketches

This tool is able to parseArduino Hardware specifications, properly rungcc and produce compiled sketches.

An Arduino sketch differs from a standard C program in that it misses amain (provided by the Arduino core), function prototypes are not mandatory, and libraries inclusion is automagic (you just have to#include them).This tool generates function prototypes and gathers library paths, providinggcc with all the needed-I params.

• -compile or-dump-prefs or-preprocess: Optional. If omitted, defaults to-compile.-dump-prefs will just print all build preferences used,-compile will use those preferences to run the actual compiler,-preprocess will only print preprocessed code to stdout.

• -hardware: Mandatory. Folder containing Arduino platforms. An example is thehardware folder shipped with the Arduino IDE, or thepackages folder created by Arduino Boards Manager. Can be specified multiple times. If conflicting hardware definitions are specified, the last one wins.

• -tools: Mandatory. Folder containing Arduino tools (gcc,avrdude...). An example is thehardware/tools folder shipped with the Arduino IDE, or thepackages folder created by Arduino Boards Manager. Can be specified multiple times.

• -libraries: Optional. Folder containing Arduino libraries. An example is thelibraries folder shipped with the Arduino IDE. Can be specified multiple times.

• -fqbn: Mandatory. Fully Qualified Board Name, e.g.: arduino:avr:uno

• -build-path: Optional. Folder where to save compiled files. If omitted, a folder will be created in the temporary folder specified by your OS.

• -prefs=key=value: Optional. It allows to override some build properties.

• -warnings: Optional, can be "none", "default", "more" and "all". Defaults to "none". Used to tellgcc which warning level to use (-W flag).

• -verbose: Optional, turns on verbose mode.

• -quiet: Optional, supresses almost every output.

• -debug-level: Optional, defaults to "5". Used for debugging. Set it to 10 when submitting an issue.

• -core-api-version: Optional, defaults to "10600". The version of the Arduino IDE which is using this tool.

• -logger: Optional, can be "human", "humantags" or "machine". Defaults to "human". If "humantags" the messages are qualified with a prefix that indicates their level (info, debug, error). If "machine", messages emitted will be in a format which the Arduino IDE understands and that it uses for I18N.

• -version: if specified, prints version and exits.

• -build-options-file: it specifies path to a localbuild.options.json file (see paragraph below), which allows you to omit specifying params such as-hardware,-tools,-libraries,-fqbn,-pref and-ide-version.

• -vid-pid: when specified, VID/PID specific build properties are used, if boards supports them.

Final mandatory parameter is the sketch to compile (of course).

Every time you run this tool, it will create abuild.options.json file in build path. It's used to understand if build options (such as hardware folders, fqbn and so on) were changed when compiling the same sketch.If they changed, the whole build path is wiped out. If they didn't change, previous compiled files will be reused if the corresponding source files didn't change as well.You can save this file locally and use it instead of specifying-hardware,-tools,-libraries,-fqbn,-pref and-ide-version.

SeeDoing continuous integration with arduino builder.

You needa version of Go >=1.13.0.

The project now usesgo.mod for dependecy management, there is no need togo get anything or to setGOPATH env vars. The build is very simple:

$ git clone https://github.com/arduino/arduino-builder.git$cd arduino-builder$ go build[.....]$ ./arduino-builder -versionArduino Builder 1.5.1Copyright (C) 2015 Arduino LLC and contributorsSee https://www.arduino.cc/ and https://github.com/arduino/arduino-builder/graphs/contributorsThis is free software; see thesourcefor copying conditions.  There is NOwarranty; not evenfor MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

If you think you found a vulnerability or other security-related bug in this project, please read oursecurity policy and report the bug to our Security Team 🛡️Thank you!

e-mail contact:security@arduino.cc

arduino-builder is licensed under General Public License version 2, as published by the Free Software Foundation. SeeLICENSE.txt.

Copyright (C) 2017 Arduino AG and contributors

Seehttps://www.arduino.cc/ andhttps://github.com/arduino/arduino-builder/graphs/contributors