nanoreth/book/installation/source.md

Build from Source

You can build Reth on Linux, macOS, and Windows WSL.

Dependencies

First, install Rust using rustup：

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

The rustup installer provides an easy way to update the Rust compiler, and works on all platforms.

Tips:

• During installation, when prompted, enter 1 for the default installation.
• After Rust installation completes, try running cargo version . If it cannot be found, run source $HOME/.cargo/env. After that, running cargo version should return the version, for example cargo 1.68.2.
• It's generally advisable to append source $HOME/.cargo/env to ~/.bashrc.

With Rust installed, follow the instructions below to install dependencies relevant to your operating system:

• Ubuntu: apt-get install libclang-dev pkg-config build-essential
• macOS: brew install llvm pkg-config

Build Reth

With Rust and the dependencies installed, you're ready to build Reth. First, clone the repository:

git clone https://github.com/paradigmxyz/reth
cd reth

Then, install Reth into your path directly via:

cargo install --locked --path bin/reth --bin reth

The binary will now be accessible as reth via the command line, and exist under your default .cargo/bin folder.

Alternatively, you can build yourself with:

cargo build --release

This will place the reth binary under ./target/release/reth, and you can copy it to your directory of preference after that.

You can also build Reth with the following rustflags for utilizing faster CPU instructions available on your machine:

RUSTFLAGS="-C target-cpu=native" cargo build --release

Compilation may take around 10 minutes. Installation was successful if reth --help displays the command-line documentation.

If you run into any issues, please check the Troubleshooting section. out to us on Telegram.

Update Reth

You can update Reth to a specific version by running the commands below. The reth directory will be the location you cloned reth to during the installation process. ${VERSION} will be the version you wish to build in the format vX.X.X.

cd reth
git fetch
git checkout ${VERSION}
cargo build --release

Compilation Profiles

You can customise the compiler settings used to compile Reth via Cargo profiles.

Reth includes several profiles which can be selected via the --profile cargo parameter.

• release: default for source builds, enables most optimisations while not taking too long to compile.
• maxperf: default for binary releases, enables aggressive optimisations including full LTO. Although compiling with this profile improves some benchmarks by around 20% compared to release, it imposes a significant cost at compile time and is only recommended if you have a fast CPU.

You can also use RUSTFLAGS="-C target-cpu=native" to enable CPU-specific optimisations. In order to get the highest performance out of your build:

RUSTFLAGS="-C target-cpu=native" cargo build --profile maxperf

Troubleshooting

Command is not found

Reth will be installed to CARGO_HOME or $HOME/.cargo. This directory needs to be on your PATH before you can run $ reth.

See "Configuring the PATH environment variable" for more information.

Compilation error

Make sure you are running the latest version of Rust. If you have installed Rust using rustup, simply run rustup update.

If you can't install the latest version of Rust you can instead compile using the Minimum Supported Rust Version (MSRV) which is listed under the rust-version key in Reth's Cargo.toml.

If compilation fails with (signal: 9, SIGKILL: kill), this could mean your machine ran out of memory during compilation. If you are on Docker, consider increasing the memory of the container, or use a pre-built binary.

If compilation fails with error: linking with cc failed: exit code: 1, try running cargo clean.

(Thanks to Sigma Prime for this section from their Lighthouse book!)