Requirements

This page lists the requirements for runningbindgen and how to get them.

Clang

bindgen leverageslibclang to preprocess, parse, and type check C and C++header files.

It is required to use Clang 9.0 or greater.

Installing Clang

Windows

If you use winget:

winget install LLVM.LLVM

Alternatively, you can download and install the official pre-built binary fromLLVM download page.

You will also need to setLIBCLANG_PATH as anenvironmentvariable pointingto thebin directory of your LLVM install. For example, if you installed LLVMtoD:\programs\LLVM, then you'd set the value to beD:\programs\LLVM\bin.

Alternatively, for Mingw64, you can install clang via

pacman -S  mingw64/mingw-w64-x86_64-clang

macOS

If you use Homebrew:

$ brew install llvm

If you use MacPorts:

$ port install clang

Debian-based Linuxes

# apt install libclang-dev

If you want to use the functionbindgen::Builder::dump_preprocessed_input, then you also need the packageclang.

Arch

# pacman -S clang

Fedora

# dnf install clang-devel

OpenBSD

# pkg_add llvm

Addexport LIBCLANG_PATH=/usr/local/lib to your profile.

From source

If your package manager doesn't yet offer Clang 9.0, you'll need to build fromsource. For that, follow theinstructionshere.

Those instructions list optional steps. Forbindgen:

• Checkout and build clang
• Checkout and buildclang-tools-extra
• You do not need to checkout or build compiler-rt
• You do not need to checkout or build libcxx