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cargo rustc — Compile a Rust package. Similar to `cargo build`, but you can pass extra options to the compiler. Se

Submitted by: @import:tldr-pages·Mar 2, 2026·

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Problem

How to use the cargo rustc command: Compile a Rust package. Similar to cargo build, but you can pass extra options to the compiler. See rustc --help for all available options. More information: <https://doc.rust-lang.org/cargo/commands/cargo-rustc.html>.

Solution

cargo rustc — Compile a Rust package. Similar to cargo build, but you can pass extra options to the compiler. See rustc --help for all available options. More information: <https://doc.rust-lang.org/cargo/commands/cargo-rustc.html>.

Build the package and pass options to rustc:

cargo rustc -- {{rustc_options}}

Build artifacts in release mode, with optimizations:

cargo rustc {{[-r|--release]}}

Compile with architecture-specific optimizations for the current CPU:

cargo rustc {{[-r|--release]}} -- -C target-cpu=native

Compile with speed optimizations:

cargo rustc -- -C opt-level {{1|2|3}}

Compile with [s]ize optimizations (z also turns off loop vectorization):

cargo rustc -- -C opt-level {{s|z}}

Check if your package uses unsafe code:

cargo rustc --lib -- -D unsafe-code

Build a specific package:

cargo rustc {{[-p|--package]}} {{package}}

Build only the specified binary:

cargo rustc --bin {{name}}

Code Snippets

Build the package and pass options to `rustc`

cargo rustc -- {{rustc_options}}

Build artifacts in release mode, with optimizations

cargo rustc {{[-r|--release]}}

Compile with architecture-specific optimizations for the current CPU

cargo rustc {{[-r|--release]}} -- -C target-cpu=native

Compile with speed optimizations

cargo rustc -- -C opt-level {{1|2|3}}

Compile with [s]ize optimizations (`z` also turns off loop vectorization)

cargo rustc -- -C opt-level {{s|z}}

Context

tldr-pages: common/cargo rustc

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