rust调用DLL或lib

就随便写写记录下

window上有三种方法：

1.动态调用,代码里通过libloading库

STATIC_LIB: Library = unsafe{  Library::new("D:\\xx\\Everything64.dll").expect("Failed to load Everything64.dll")};
let Everything_SetSearch: Symbol<unsafe extern "C" fn(*const c_char)> = lib.get(b"Everything_SetSearchA").unwrap();
let Everything_CleanUp: Symbol<unsafe extern "C" fn()> = lib.get(b"Everything_CleanUp").unwrap();
Everything_SetSearch(x.as_ptr());

 2.通过rust ffi引用

#[link(name = "Everythingx",kind = "static")]
extern "C" {
    fn Everything_SetSearchA(lp_string: *const c_char);
}

需要将dll放在exe目录下或者工程目录下

3.有源码情况下使用cc编译，build.rs

let opt_level = env::var("OPT_LEVEL").unwrap_or_else(|_| "0".to_string());
cc::Build::new()
    .opt_level(opt_level.parse().unwrap())
    .file("D:\\xx\\Everything.c")
    .include("D:\\xx\\include")
    .include("D:\\xx\\ipc")
    .include("C:\\Program Files (x86)\\Windows Kits\\10\\Include\\10.0.18362.0\\um")
   // .out_dir("./")
    .compile("Everythingx");

 可能需要添加额外依赖

通过println!("cargo:rustc-link-lib=shell32");指定