rust-bindgen

A native binding generator for the Rust language.

rust-bindgen was originally ported from clay's bindgen.

Requirements

Clang >= 3.4

Note: libclang.so has to be statically linked with LLVM or you will encounter issue 89. You can also use LD_PRELOAD=/path/to/libclang.so to workaround the problem.

Building

$ cargo build

Note: this links with Apple's version of libclang on OS X, by default. This can be changed by setting the LIBCLANG_PATH environment variable.

If you are running the command line tool you will also need to append the following path to the DYLD_LIBRARY_PATH environment variable. You might already have done this if you have installed the Rust compiler outside of standard /usr/local directory.

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/

Or, if you only have Xcode Command Line Tools installed:

/Library/Developer/CommandLineTools/usr/lib

Usage

Command Line

Usage: bindgen [OPTIONS] HEADERS...

Options:
    -h, --help                  Display help message
    -l [KIND=]NAME              Link to the specified library NAME. The optional KIND can be one of,
                                static, dylib, or framework. If omitted, dylib is assumed.
    -o FILENAME                 Write generated bindings to FILENAME (default is stdout)
    -match NAME                 Only output bindings for definitions from files whose names contain
                                NAME. Can be used multiples times to include files matching any of
                                the names.
    -builtins                   Output bindings for builtin definitions (for example,
                                `__builtin_va_list`)
    -allow-unknown-types        Do not fail if unknown types are encountered; instead treat them as
                                `void`
    -emit-clang-ast             Output the AST (for debugging purposes)
    -override-enum-type TYPE    Override the integer type for enums, where TYPE is one of:
                                  uchar
                                  schar
                                  ushort
                                  sshort
                                  uint
                                  sint
                                  ulong
                                  slong
                                  ulonglong
                                  slonglong
    
    Options other than the above are passed to Clang.

Macro

bindgen!(header..., options...)

Options:

Option Name	Type	Default
link	str
match	str
builtins	bool	true
allow_unknown_types	bool	false
clang_args	str

See the Usage · Command Line section for descriptions of options.

Examples

Generate MySQL client bindings

bindgen -l mysql -match mysql.h -o mysql.rs /usr/include/mysql/mysql.h

echo '#include <mysql.h>' > gen.h
bindgen `mysql_config --cflags` -l mysql -match mysql.h -o mysql.rs gen.h

Cargo.toml

[dependencies]
bindgen = ">= 0"

main.rs

#![feature(phase)]
#[phase(plugin)] extern crate bindgen;

#[allow(dead_code, uppercase_variables, non_camel_case_types)]
mod mysql_bindings {
    bindgen!("/usr/include/mysql/mysql.h", match="mysql.h", link="mysql")
}

To Do

Bit-field accessors

jvranish/rust-bindgen