Setup development environment for C/C++

To write Golem components in C or C++, a couple of common WebAssembly tools need to be installed, as well as the latest version of the WASM SDK.

Install WebAssembly tooling

You will need both wasm-tools and wit-bindgen to work on C/C++ WebAssembly projects. Consult the dedicated page for instructions on how to install them.

Install WASI SDK 25.0

Download and extract WASI SDK 25.0 (opens in a new tab) somewhere. In the examples we assume that the WASI_SDK_PATH environment variable is set up pointing to the extracted SDK.

The SDK contains a version of Clang that can compile to WebAssembly modules, which can be converted into Golem components using the wit-bindgen and wasm-tools command line tools.