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Solana Program Library

The Solana Program Library (SPL) is a collection of on-chain programs targeting the Sealevel parallel runtime. These programs are tested against Solana's implementation of Sealevel, solana-runtime, and deployed to its mainnet. As others implement Sealevel, we will graciously accept patches to ensure the programs here are portable across all implementations.

Full documentation is available at https://spl.solana.com

Development

Environment Setup

  1. Install the latest Rust stable from https://rustup.rs/
  2. Install Solana v1.6.1 or later from https://docs.solana.com/cli/install-solana-cli-tools
  3. Install the libudev development package for your distribution (libudev-dev on Debian-derived distros, libudev-devel on Redhat-derived).

Build

The normal cargo build is available for building programs against your host machine:

$ cargo build

To build a specific program, such as SPL Token, for the Solana BPF target:

$ cd token/program
$ cargo build-bpf

Test

Unit tests contained within all projects can be run with:

$ cargo test      # <-- runs host-based tests
$ cargo test-bpf  # <-- runs BPF program tests

To run a specific program's tests, such as SPL Token:

$ cd token/program
$ cargo test      # <-- runs host-based tests
$ cargo test-bpf  # <-- runs BPF program tests

Integration testing may be performed via the per-project .js bindings. See the token program's js project for an example.

Clippy

$ cargo clippy

Coverage

$ ./coverage.sh  # Please help! Coverage build currently fails on MacOS due to an XCode `grcov` mismatch...

Release Process

SPL programs are currently tagged and released manually. Each program is versioned independently of the others, with all new development occurring on master. Once a program is tested and deemed ready for release:

Bump Version

  • Increment the version number in the program's Cargo.toml
  • Generate a new program ID and replace in <program>/program-id.md and <program>/src/lib.rs
  • Run cargo build-bpf <program> to update relevant C bindings. (Note the location of the generated spl_<program>.so for attaching to the Github release.)
  • Open a PR with these version changes and merge after passing CI.

Create Github tag

Program tags are of the form <program>-vX.Y.Z. Create the new tag at the version-bump commit and push to the solana-program-library repository, eg:

$ git tag token-v1.0.0 b24bfe7
$ git push upstream --tags

Publish Github release

  • Go to GitHub Releases UI
  • Click "Draft new release", and enter the new tag in the "Tag version" box.
  • Title the release "SPL vX.Y.Z", complete the description, and attach the spl_<program>.so binary
  • Click "Publish release"

Publish to Crates.io

Navigate to the program directory and run cargo package to test the build. Then run cargo publish.