wasmerio/wasmer · error

{objcopy} failed with error code {}: {}

Error message

{objcopy} failed with error code {}: {}

What it means

Error "{objcopy} failed with error code {}: {}" thrown in wasmerio/wasmer.

Source

Thrown at lib/api/build.rs:252

            // A bit hacky: we need a way to figure out if we're going to target a Mach-O
            // library or an ELF one to take care of the "_" in front of symbols.
            if cfg!(any(target_os = "macos", target_os = "ios")) {
                format!("--redefine-sym=_{old}={new}")
            } else {
                format!("--redefine-sym={old}={new}")
            }
        })
        .collect();
    let prefixed_v8_lib_path = v8_lib_dir.join("libv8prefixed.a");
    let output = std::process::Command::new(objcopy)
        .args(syms)
        .arg(v8_lib_path.display().to_string())
        .arg(prefixed_v8_lib_path.display().to_string())
        .output()
        .expect("objcopy command failed");

    if !output.status.success() {
        panic!(
            "{objcopy} failed with error code {}: {}",
            output.status,
            String::from_utf8(output.stderr).unwrap()
        );
    }

    println!("cargo:rustc-link-lib=static=v8prefixed");
}

#[allow(unused)]
fn main() {
    #[cfg(feature = "v8")]
    build_v8();
}

View on GitHub (pinned to 8c4b9ee9d3)

When it happens

Trigger: Thrown at lib/api/build.rs:252 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of wasmerio/wasmer@8c4b9ee9d3 (2026-09-01). Data as JSON: /api/errors/7fbd063096a6caa1. Report an issue: GitHub.