Minimal cc-rs project that shows a linker warning about incorrect versions

build.rs

fn main() {
    cc::Build::new().file("foo.c").compile("foo");
}

Cargo.lock

# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 4

[[package]]
name = "cc"
version = "1.2.49"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "90583009037521a116abf44494efecd645ba48b6622457080f080b85544e2215"
dependencies = [
 "find-msvc-tools",
 "shlex",
]

[[package]]
name = "cc-warning-minimal"
version = "0.1.0"
dependencies = [
 "cc",
]

[[package]]
name = "find-msvc-tools"
version = "0.1.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3a3076410a55c90011c298b04d0cfa770b00fa04e1e3c97d3f6c9de105a03844"

[[package]]
name = "shlex"
version = "1.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"

Cargo.toml

[package]
name = "cc-warning-minimal"
version = "0.1.0"
edition = "2024"

[[bin]]
name = "cc-warning-minimal"
path = "main.rs"

[build-dependencies]
cc = "1.0"

[workspace]

foo.c

void foo(void) {}

main.rs

#![warn(linker_messages)]
unsafe extern "C" {
    safe fn foo();
}

fn main() {
    foo();
}