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Description
Trying out some FFI
➜ rustc version.rs
versions.rs:7:29: 7:35 error: use of undeclared type name `c_char`
versions.rs:7 fn version_string () -> *c_char;
^~~~~~
versions.rs:8:39: 8:45 error: use of undeclared type name `c_uint`
versions.rs:8 fn version_interface_current () -> c_uint;
^~~~~~
versions.rs:9:40: 9:46 error: use of undeclared type name `c_uint`
versions.rs:9 fn version_interface_revision () -> c_uint;
^~~~~~
versions.rs:10:35: 10:41 error: use of undeclared type name `c_uint`
versions.rs:10 fn version_interface_age () -> c_uint;
^~~~~~
error: aborting due to 4 previous errors
➜ re2 cat versions.rs
use core::libc::{c_char, c_uint};
mod re2 {
#[link_name = "cre2"]
#[link_args = "-lcre2"]
extern {
fn version_string () -> *c_char;
fn version_interface_current () -> c_uint;
fn version_interface_revision () -> c_uint;
fn version_interface_age () -> c_uint;
}
}
fn version_interface_age () -> c_uint {
unsafe {
re2::version_interface_age()
}
}
fn main () {
io::println(fmt!("%?", version_interface_age));
}Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
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