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Luca Barbato edited this page Jun 25, 2019
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Cargo-c let you produce all you need to make your crate used by C-ABI consumers, mimicking a normal C library.
- Make sure you have only a
lib
target, the first one will be used. - The
.pc
file will be produced using theversion
anddescription
provided by the project.
You can put the C-API in a module and import it using the cargo_c
cfg:
// lib.rs
#[cfg(cargo_c)] {
// Opaque
pub struct MyOpaqueStruct {
inner: MyRustStruct,
...
}
pub unsafe extern "C" fn mycrate_mystruct_new() -> *mut MyOpaqueStruct { ... }
// Not Opaque
#[repr(C)]
pub struct MyOtherStruct {
pub field: u32,
...
}
}
Under the hood cbindgen is being used, you may tweak its setting using a cbindgen.toml
configuration.
$ git clone https://github.com/lu-zero/cargo-c
$ cd cargo-c
$ cargo install --path .
$ cd your_crate
$ cargo cinstall --prefix=/usr
You will have:
├── include
│ └── your_crate
│ └── your_crate.h
└── lib
├── libyour_crate.0.1.2.dylib
├── libyour_crate.0.dylib
├── libyour_crate.a
├── libyour_crate.dylib
└── pkg-config
└── your_crate.pc