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Arduino Builder

A command line tool for compiling Arduino sketches

This tool is able to parse Arduino Hardware specifications, properly run gcc and produce compiled sketches.

An Arduino sketch differs from a standard C program in that it misses a main (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, providing gcc with all the needed -I params.

Usage

  • -compile or -dump-prefs: 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.

  • -hardware: Mandatory. Folder containing Arduino platforms. An example is the hardware folder shipped with the Arduino IDE, or the packages 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 the hardware/tools folder shipped with the Arduino IDE, or the packages folder created by Arduino Boards Manager. Can be specified multiple times.

  • -libraries: Optional. Folder containing Arduino libraries. An example is the libraries 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 tell gcc which warning level to use (-W flag).

  • -verbose: Optional, turns on verbose mode.

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

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

  • -logger: Optional, can be "human" or "machine". Defaults to "human". If "machine", messages emitted will be in a format which the Arduino IDE understands and that it uses for I18N.

  • -lib-discovery-recursion-depth: Optional. Defaults to 3. How deep should library discovery go down looking for included libraries.

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

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

Using it for continuously verify your libraries or cores

See Doing continuous integration with arduino builder.

Building from source

You need Go 1.4.2.

Repo root contains script setup_go_env_vars. Use it as is or as a template for setting up Go environment variables.

Once done, run the following commands:

go get github.com/go-errors/errors
go get github.com/stretchr/testify
go get github.com/jstemmer/go-junit-report
go build

TDD

In order to run the tests, type:

go test -v ./src/arduino.cc/builder/test/...

In jenkins, use

go test -v ./src/arduino.cc/builder/test/... | bin/go-junit-report > report.xml

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A command line tool for compiling Arduino sketches

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