Rust Library and external crates

help
1

Hello forum !

I'm writing a library and I have two files:
src/lib.rs
src/types.rs

in types.rs I've added all the struct definitions, while in lib.rs I0ve added all the functions that I want to made available.

Now I'm facing this problem: in both types.rs and lib.rs I'm usinge the zerocopy crate. So i've added:

  • "use zerocopy::AsBytes;" in lib.rs
  • "use zerocopy::{AsBytes, FromBytes, FromZeroes};" in types.rs
    after running:
cargo add zerocopy

Now when I run:

$ rustc --crate-type=lib src/lib.rs

the comiler complains that:

error[E0432]: unresolved import zerocopy
--> src/lib.rs:1:5
|
1 | use zerocopy::AsBytes;
| ^^^^^^^^ maybe a missing crate zerocopy?
|
= help: consider adding extern crate zerocopy to use the zerocopy crate

How can I fix that ?

thanks !

2

You want to cargo build, not invoke rustc directly.

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