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Cargo / Build Package With Compiler Options

Build Package With Compiler Options

Build a Rust package applying specified compiler options.

Terminal

cargo rustc -- <rustc_options>

cargo rustc -- <rustc_options>

#!/bin/bash

# Build Package With Compiler Options
cargo rustc -- {{rustc_options}}

import subprocess

# Build Package With Compiler Options
# Make sure to replace <placeholders> with actual values
def run_command():
    cmd = [
        "cargo",
        "rustc",
        "--",
        "<rustc_options>"
    ]
    
    try:
        print(f"Executing: {' '.join(cmd)}")
        subprocess.run(cmd, check=True)
    except subprocess.CalledProcessError as e:
        print(f"Error: {e}")
    except FileNotFoundError:
        print("Error: cargo not found. Please install it first.")

if __name__ == "__main__":
    run_command()

When To Use

When standard build options do not meet optimization or functionality goals in production settings.

Pro Tip

Utilize `-C` flags for low-level optimizations; might inadvertently increase compilation time significantly.

Command Builder

Tune the command before you copy it

Back to syntax

Generated Command

cargo rustc -- <rustc_options>

Terminal Output

Expected runtime feedback

Simulated preview

Output

Compiling my_package v0.1.0 (path/to/my_package)
    Checking my_package v0.1.0 (path/to/my_package)
     Finished debug [unoptimized + debuginfo] target(s) in 1.23s
     Running `target/debug/my_package`

Anatomy of Output

Understanding the result

Compiling mycrate v0.1.0 (/path/to/mycrate) Starting Compilation

Notes the crate being compiled and its version.

Finished release [optimized] target(s) in 1.23s Build Completion Time

Indicates completion and optimizations applied during the build.

Documenting mycrate v0.1.0 Documentation Generation

Confirms that documentation generation follows the build.

Power User Variants

Optimized versions

cargo rustc -- --target x86_64-unknown-linux-gnu

Build specifically for the `x86_64-unknown-linux-gnu` target.

cargo rustc -- --features "feature_name"

Enables specific Rust features during the build.

Troubleshooting

Common pitfalls

error: the following required packages have not been found: rustc

Solution: Ensure Rust is installed correctly and the `rustc` binary is in the PATH.

error: compilation failed, aborting

Solution: Check error messages above for details about code issues.

error: invalid flags were provided: --unknown-option

Solution: Review and correct the options based on Rust's documentation.

Command Breakdown

What each part is doing

cargo: Base Command; The executable that performs this operation. Here it runs Cargo before the shell applies any redirect operators.
<rustc_options>: rustc options; The value supplied for rustc options.
--: Command Option; Tool-specific option used by this command invocation.

How To Run

Execution path

Step 1
Run: `cargo rustc -- --release` to build with release optimizations.
Step 2
Check the target directory: `ls target/release` to verify the compiled binaries.

Alternative Approaches

Comparable commands in other tools

Alternative build tools tools for the same job.

Mvn / Package Project Common mvn package Mvn / Package Project Skip Tests Common mvn package -D skipTests Mvn / Package Project Update Dependencies Common mvn package -U Cpio / Extract Files From Archive Cpio Verbose cpio < <archive.cpio> -idv Autopkgtest / Run Specific Test For Package Linux autopkgtest --test-name=<test_name> -- <null>