This is a small crate providing a cimport macro (also a cppimport macro), which can be used to import C headers into your program. You need bindgen to be installed in your system.
```toml
[depenedencies] c_import = "0.1" ```
```rust // src/main.rs use cimport::cimport;
c_import!("/usr/include/cairo/cairo.h");
fn main() { let version = unsafe { cairo_version() }; println!("{}", version); } ```
rust
// build.rs
fn main() {
println!("cargo:rustc-link-lib=cairo");
}
If you don't want to pass the absolute path of a system header, create a new header file, and include the system header in it. It would benefit from bindgen's include paths searchability.
```c // src/my_header.h
```
```rust use cimport::cimport; cimport!("src/myheader.h");
fn main() { let version = unsafe { cairo_version() }; println!("{}", version); } ```
```cpp // src/my_header.hpp
namespace mynamespace { class MyStruct { int version; public: MyStruct(int version); int version() const; }; } ```
```rust // src/main.rs use cimport::cppimport;
cppimport!("src/myheader.hpp");
fn main() { let h = unsafe { mynamespaceMyStruct::new(2) }; println!("{}", unsafe { h.version() }); } ```
rust
// build.rs
fn main() {
// assuming there's a libmy_cpp_lib.a
println!("cargo:rustc-link-lib=my_cpp_lib");
}
Another example: ```cpp // src/fltk_wrapper.h
```
```rust // src/main.rs use cimport::cppimport;
cppimport!("src/fltkwrapper.hpp");
fn main() { let version = unsafe { Fl::api_version() }; println!("{}", version); } ```
rust
// build.rs
fn main() {
println!("cargo:rustc-link-lib=fltk");
}