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COMPILING.md

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Compiling

Setup

In order to compile librespot, you will first need to set up a suitable Rust build environment, with the necessary dependencies installed. You will need to have a C compiler, Rust, and the development libraries for the audio backend(s) you want installed. These instructions will walk you through setting up a simple build environment.

Install Rust

The easiest, and recommended way to get Rust is to use rustup. On Unix/MacOS You can install rustup with this command:

curl https://sh.rustup.rs -sSf | sh

Follow any prompts it gives you to install Rust. Once that’s done, Rust's standard tools should be setup and ready to use.

Note: The current minimum required Rust version at the time of writing is 1.40.0, you can find the current minimum version specified in the .travis.yml file.

Additional Rust tools - rustfmt

To ensure a consistent codebase, we utilise rustfmt, which is installed by default with rustup these days, else it can be installed manually with:

rustup component add rustfmt

Using rustfmt is not optional, as our CI checks against this repo's rules.

General dependencies

Along with Rust, you will also require a C compiler.

On Debian/Ubuntu, install with:

sudo apt-get install build-essential

On Fedora systems, install with:

sudo dnf install gcc

Audio library dependencies

Depending on the chosen backend, specific development libraries are required.

Note this is an non-exhaustive list, open a PR to add to it!

Audio backend Debian/Ubuntu Fedora macOS
Rodio (default) libasound2-dev alsa-lib-devel
ALSA libasound2-dev, pkg-config alsa-lib-devel
PortAudio portaudio19-dev portaudio-devel portaudio
PulseAudio libpulse-dev pulseaudio-libs-devel
JACK libjack-dev jack-audio-connection-kit-devel
SDL libsdl2-dev SDL2-devel
Pipe - - -
For example, to build an ALSA based backend, you would need to run the following to install the required dependencies:

On Debian/Ubuntu:

sudo apt-get install libasound2-dev pkg-config

On Fedora systems:

sudo dnf install alsa-lib-devel

Getting the Source

The recommended method is to first fork the repo, so that you have a copy that you have read/write access to. After that, it’s a simple case of cloning your fork.

git clone [email protected]:YOURUSERNAME/librespot.git
cd librespot

Compiling & Running

Once your build environment is setup, compiling the code is pretty simple.

Compiling

To build a debug build with the default backend, from the project root run:

cargo build

And for release:

cargo build --release

You will most likely want to build debug builds when developing, as they compile faster, and more verbose, and as the name suggests, are for the purposes of debugging. When submitting a bug report, it is recommended to use a debug build to capture stack traces.

There are also a number of compiler feature flags that you can add, in the event that you want to have certain additional features also compiled. The list of these is available on the wiki.

By default, librespot compiles with the rodio-backend feature. To compile without default features, you can run with:

cargo build --no-default-features

Similarly, to build with the ALSA backend:

cargo build --no-default-features --features "alsa-backend"

Running

Assuming you just compiled a debug build, you can run librespot with the following command:

./target/debug/librespot -n Librespot

There are various runtime options, documented in the wiki, and visible by running librespot with the -h argument.