Icon LinkDependencies

To run the Fuel indexer, you'll need to install a few dependencies on your system:

• fuelup , the Fuel toolchain manager
• A supported database
  • As of now we only support Postgres
• The wasm32-unknown-unknown rustup target
• wasm-snip , a utility for stripping symbols from WebAssemly binaries.

If you don't want to install a database directly onto your system, you can use Docker to run it as an isolated container. You can install it by following the install instructions Icon Link. For reference purposes, we provide a docker compose file Icon Link that runs a Postgres database and the Fuel indexer service.

IMPORTANT: Note for Apple Silicon macOS users:

Using the Fuel indexer through Docker on Apple Silicon systems is currently not supported.

We're working to bring support to these systems.

Also, it's assumed that you have the Rust programming language installed on your system. If that is not the case, please refer to the Rust installation instructions Icon Link for more information.

Icon Linkfuelup

We strongly recommend that you use the Fuel indexer through forc, the Fuel orchestrator . You can get forc (and other Fuel components) by way of fuelup, the Fuel toolchain manager . Install fuelup by running the following command, which downloads and runs the installation script.

curl --proto '=https' --tlsv1.2 -sSf https://install.fuel.network/fuelup-init.sh | sh

After fuelup has been installed, the forc index command and fuel-indexer binaries will be available on your system.

Icon LinkPostgreSQL

The Fuel indexer requires the use of a database. We currently support PostgresSQL Icon Link.

IMPORTANT: Fuel Indexer users on most platforms don't need to explicitly install PostgresQL software via a package manager. When starting the indexer service via forc index start simply pass the --embedded-database flag in order to have the indexer service download and start an embedded PostgresQL instance via forc index postgres .

However if users or devs would like to install PostgresQL via some package manager, feel free to checkout the more detailed installation steps below.

Icon LinkmacOS

On macOS systems, you can install PostgreSQL through Homebrew. If it isn't present on your system, you can install it according to the instructions Icon Link.

Once installed, you can add PostgreSQL to your system by running brew install postgresql.

Icon LinkWASM

Two additonal cargo components will be required to build your indexers: wasm-snip and the wasm32-unknown-unknown target.

As of this writing, there is a small bug in newly built Fuel indexer WASM modules that produces a WASM runtime error due an errant upstream dependency. For now, you can use wasm-snip to remove the errant symbols from the WASM module. An example can be found in the related script here Icon Link.

Icon Linkwasm-snip

To install the wasm-snip:

cargo install wasm-snip

Icon Linkwasm32 target

To install the wasm32-unknown-unknown target via rustup:

rustup target add wasm32-unknown-unknown

IMPORTANT: Users on Apple Silicon macOS systems may experience trouble when trying to build WASM modules due to its clang binary not supporting WASM targets. If encountered, you can install a binary with better support from Homebrew (brew install llvm) and instruct rustc to leverage it by setting the following environment variables:

• AR=/opt/homebrew/opt/llvm/bin/llvm-ar
• CC=/opt/homebrew/opt/llvm/bin/clang

Addtionally, on some systems you need to explictly link clang to llvm.

• LIBCLANG_PATH="/opt/homebrew/opt/llvm/lib"
• LDFLAGS="-L/opt/homebrew/opt/llvm/lib"
• CPPFLAGS="-I/opt/homebrew/opt/llvm/include"