Rust Library in C code - RiscV target

help
1

Hi,

I'm trying to build a RiscV library to be integrated into existing C code.

I'm using the following target: riscv64gc-unknown-none-elf

When the link is executed I can see the following error message:
ld: skipping incompatible ../libs/my_lib/target/release/libmy_lib.a when searching for -lmy_lib

How can I check if my library has been built for the desired target?

Thanks,

.cargo/config.toml

[target.riscv64gc-unknown-none-elf]
rustflags = [
  "-C", "link-arg=-Tlink.x",
]

[build]
target = "riscv64gc-unknown-none-elf"

src/lib.rs

#![no_std]

extern crate panic_halt;

#[unsafe(no_mangle)]
#[allow(non_snake_case)]
pub extern "C" fn MyFunction() -> u32 {
    0
}

Cargo.toml

[package]
name = "my_lib"
version = "0.1.0"
edition = "2024"

[dependencies]
panic-halt = "1.0.0"

[lib]
name = "my_lib"
crate-type = ["staticlib"]
2

Can you extract a random object file out of that library and run file the_object.o on it to check the target (and hopefully the exact abi variant) it was compiled for?