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Building Liana

We use Cargo, the ubiquitous Rust package manager. Cargo takes care of downloading and compiling the project's dependencies, as well as compiling the project itself. Dependencies are specified in a Cargo.toml file at the root of this repository. They are pinned in a Cargo.lock file at the same place.

We take security very seriously, and toolchain is a big part of that. We are moderately conservative with dependencies and aim to target reasonable compiler versions that have had time to mature (ie that had the chance to be reviewed and distributed by third parties, as well as tested by the community). See CONTRIBUTING.md for the currently minimum Rust version supported by lianad.

To build the GUI too, you'll unfortunately need a more recent Rust version. The minimum version supported by the GUI at the moment is 1.80.0. You will most likely have to manually download it or use rustup to install more recent compilers.

Getting Cargo

Through your system package manager

Most package managers distribute a version of Cargo able to build this project. For instance on Debian-based systems (as root):

apt update && apt install cargo

By manually downloading the latest stable version

The "other installation methods" page of the Rust website contains a list of archives for different architectures, along with signatures made with the "Rust signing key":

pub   rsa4096/0x85AB96E6FA1BE5FE 2013-09-26 [SC]
      Key fingerprint = 108F 6620 5EAE B0AA A8DD  5E1C 85AB 96E6 FA1B E5FE
uid                   [ unknown] Rust Language (Tag and Release Signing Key) <[email protected]>
sub   rsa4096/0x8E9AA3F7AB3F5826 2013-09-26 [E]
sub   rsa4096/0x5CB4A9347B3B09DC 2014-12-15 [S]

You can therefore pull the key from either the above or from a keyserver:

$ gpg --keyserver hkps://keys.openpgp.org --receive 108F66205EAEB0AAA8DD5E1C85AB96E6FA1BE5FE

And then you can download the archive corresponding to your system and CPU architecture, verify the signature and use the cargo binary from this archive to build Liana. Here is an example for amd64:

$ curl -O https://static.rust-lang.org/dist/rust-1.80.0-x86_64-unknown-linux-gnu.tar.gz
$ curl -O https://static.rust-lang.org/dist/rust-1.80.0-x86_64-unknown-linux-gnu.tar.gz.asc
$ gpg --verify rust-1.80.0-x86_64-unknown-linux-gnu.tar.gz.asc
$ tar -xzf rust-1.80.0-x86_64-unknown-linux-gnu.tar.gz
$ ./rust-1.80.0-x86_64-unknown-linux-gnu/cargo/bin/cargo build --release

Through rustup

rustup is a software for installing the Rust toolchain.

Some package managers distribute a version of rustup. Failing that, you can always follow the "official" installation method of rustup (that is, a curl-sh pipe).

Building the project

To build the whole wallet including the GUI, you'll need to install its build and runtime dependencies first.

Then run:

$ cargo build --release

The lianad, liana-cli and liana-gui binaries will be in the target/ directory at the root of the repository, except if using Windows in which case only liana-gui will be built (lianad and liana-cli relies on Unix socket):

$ ls target/release/
build  deps  examples  incremental  liana-cli  liana-cli.d  lianad  lianad.d  liana-gui  liana-gui.d  libliana.d  libliana_gui.d  libliana_gui.rlib  libliana.rlib  libliana_ui.d  libliana_ui.rlib

Whether your are building the whole wallet or only the daemon, make sure not to forget the --release command line option. You would otherwise build without optimizations.