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crabtw/rust-bindgen

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rust-bindgen

A binding generator for the rust language. It is ported from clay's bindgen.

Requirements

  • clang 3.4 and up

Note: The 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 this path to your DYLD_LIBRARY_PATH environment variable, which you might already have set if you have installed the Rust compiler outside of standard /usr/local path.

The default path on OS X is:

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

Or if you only have Xcode Command Line Tools installed:

export DYLD_LIBRARY_PATH=/Library/Developer/CommandLineTools/usr/lib

Command Line Usage

Usage: ./bindgen [options] input.h
Options:
    -h or --help               Display help message
    -l <name> or -l<name>      Link to a dynamic library, can be provided
                               multiple times
    -static-link <name>        Link to a static library
    -framework-link <name>     Link to a framework
    -o <output.rs>             Write bindings to <output.rs> (default stdout)
    -match <name>              Only output bindings for definitions from files
                               whose name contains <name>
                               If multiple -match options are provided, files
                               matching any rule are bound to
    -builtins                  Output bindings for builtin definitions
                               (for example __builtin_va_list)
    -allow-unknown-types       Don't fail if we encounter types we do not support,
                               instead treat them as void
    -emit-clang-ast            Output the ast (for debugging purposes)
    -override-enum-type <type> Override enum type, type name could be
                                 uchar
                                 schar
                                 ushort
                                 sshort
                                 uint
                                 sint
                                 ulong
                                 slong
                                 ulonglong
                                 slonglong

    Options other than stated above are passed to clang

Macro Usage

Usage: bindgen!([headers], [named options])
Options:

    Option Name          Type              Default
    ----------------------------------------------
    link                 multiple strings
    link_static          multiple strings
    link_framework       multiple strings
    match                multiple strings
    emit_builtins        bool              true
    allow_unknown_types  bool              false
    clang_args           string

See "Command Line Usage" section for option descriptions

Examples

Generate MySQL client bindings

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

or

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

or

Cargo.toml

[dependencies.bindgen]
git = "https://github.com/crabtw/rust-bindgen.git"

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")
}

TODO

  • bitfield accessors