CODEWITHSUNDEEP
rust
Laszlo
Laszlo

Reputation: 801

How to statically link to an existing rlib?

I have two independently created libsomelibrary.rlib files at /path/to/deps/debug/ and /path/to/deps/release/ directories. I also have a project in the /path/to/myproject/ directory which needs to link statically to libsomelibrary.rlib.

How can I specify in Cargo.toml (or elsewhere) the references to those .rlibs?

I have tried to add somelibrary under [dependencies] in Cargo.toml. using a build.rs to specify the search path and file name:

println!("cargo:rustc-link-lib=static=somelib");
println!("cargo:rustc-link-search=/path/to/deps/debug/");

then in Cargo.toml:

[package]
build = "build.rs"
links = "somelibrary"

but I still get linkage errors.

Upvotes: 7

Views: 4536

Answers (1)

Vetri Box
Vetri Box

Reputation: 31

As far as I know, you gotta manually compile with rustc

rustc main.rs —-extern custom1=path/to/libcustom1.rlib —-extern custom2=path/to/libcustom2.rlib

With every library in the form of .rlib you add ‘—-extern’ for every single one of ‘em.

Refer to this

And to this

More than that, the man page for rustc will give you extra leg on more complex things like FFI

Upvotes: 3

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