`cargo objcopy` looks like passing strange argument to the objcopy command

[fukai-t]

I am a beginner of rust. When I run cargo objcopy --verbose --release --target=... -- ..., it looks like passing a strange argument to the objcopy command.

The execution log is the following.

# cargo objcopy --verbose --release --target=aarch64-unknown-none  -- --strip-all -O binary target/aarch64-unknown-none/release/kernel8 kernel8.img
"/usr/local/rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/cargo" "build" "--release" "--target" "aarch64-unknown-none" "--message-format=json"
    Finished release [optimized] target(s) in 0.01s
"rust-objcopy" "/workspace/rust-on-bare-metal-raspi3-samples/target/aarch64-unknown-none/release/kernel8" "--strip-all" "-O" "binary" "target/aarch64-unknown-none/release/kernel8" "kernel8.img"
/usr/local/rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/bin/llvm-objcopy: error: too many positional arguments
#

I think "/workspace/rust-on-bare-metal-raspi3-samples/target/aarch64-unknown-none/release/kernel8" is a strange argument.

If more information is required to solve this problem, please tell me because I am not sure what information is important for debugging.

[therealprof]

Hi there.

I think your line: cargo objcopy --verbose --release --target=aarch64-unknown-none -- --strip-all -O binary target/aarch64-unknown-none/release/kernel8 kernel8.img should read cargo objcopy --verbose --release --target=aarch64-unknown-none -- --strip-all -O binary kernel8.img

cargo-objcopy will automatically pass in the corrrect binary according to your cargo selection, in your case the default binary.

[fukai-t]

Thank you for your helpful answer. I have resolved my problem thank to your answer! (I have fixed a given Makefile). So I close this issue.