'How to pass rustc flags to cargo?

I am trying to disable dead code warnings. I tried the following

cargo build -- -A dead_code

➜ rla git:(master) ✗ cargo build -- -A dead_code error: Invalid arguments.

So I am wondering how would I pass rustc arguments to cargo?

rust rust-cargo

Solution 1:^[1]

You can disable dead code warnings by modifying config.toml file. if file doesn't exists create one as below locations.

Windows: %USERPROFILE%\.cargo\config.toml
Unix: $HOME/.cargo/config.toml

Then add below line

[target.'cfg(target_family = "windows")']
rustflags = ["-Adead_code"]

If you dont want to see any unused variable warnings add below line

[target.'cfg(target_family = "windows")']
rustflags = ["-Aunused"]

Don't forget to disable these before Production :)

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Solution	Source
Solution 1	Kargat TTT