Rust Error E0454: Link Name with Empty Name
Understanding Rust Error E0454
Rust error E0454 occurs when a link attribute is given an empty name string. This prevents the Rust compiler from linking to the external library as it requires the library's name for successful linking. To resolve this error, provide the name of the library within the link attribute.
Here's the erroneous code from the official documentation that triggers this error:
#![allow(unused)]
fn main() {
#[link(name = "")] extern "C" {}
// error: `#[link(name = "")]` given with empty name
}Resolving Rust Error E0454
To fix Rust error E0454, simply specify the name of the library you want to link with, within the link attribute. For example:
#![allow(unused)]
fn main() {
#[link(name = "some_lib")] extern "C" {} // ok!
}Linking to Multiple External Libraries
In some cases, you might need to link to multiple external libraries. You can link to multiple libraries by using separate link attributes for each library. Here's an example:
#![allow(unused)]
fn main() {
#[link(name = "lib1")] extern "C" {}
#[link(name = "lib2")] extern "C" {}
}In this example, we link to two external libraries named `lib1` and `lib2` with their respective link attributes.