Crate compile_time 

This crate provides macros for getting compile time information.

You can get the compile time either as time::Date, time::Time, time::OffsetDateTime, string, or UNIX timestamp.

You can get the Rust compiler version either as semver::Version or string, and the individual version parts as integer literals or strings, respectively.

You can run arbitrary command at compile time and get its output as bytes or string.

Examples

Getting the compile time and Rust version:

const COMPILE_DATETIME: &str = compile_time::datetime_str!();
const RUSTC_VERSION: &str = compile_time::rustc_version_str!();

println!("Compiled using Rust {RUSTC_VERSION} on {COMPILE_DATETIME}.");

Running an arbitrary command at compile time:

const MAGIC_NUMBER: &str = compile_time::command_str!("echo", "42");

assert_eq!(MAGIC_NUMBER, "42\n");

Macros

command_bytes

Runs the given command and returns its standard output as a &'static [u8].

command_str

Runs the given command and returns its standard output as a &'static str.

date

Returns the compile date as time::Date.

date_str

Returns the compile date as &'static str in yyyy-MM-dd format.

datetime

Returns the compile date and time as time::OffsetDateTime.

datetime_str

Returns the compile date and time as &'static str in yyyy-MM-ddThh:mm:ssZ format.

rustc_version

Returns the Rust compiler version as [semver::Version].

rustc_version_build

Returns the Rust compiler build version as a &'static str.

rustc_version_major

Returns the Rust compiler major version as integer literal.

rustc_version_minor

Returns the Rust compiler minor version as integer literal.

rustc_version_patch

Returns the Rust compiler patch version as integer literal.

rustc_version_pre

Returns the Rust compiler pre version as &'static str.

rustc_version_str

Returns the Rust compiler version as &'static str.

time

Returns the compile time as time::Time.

time_str

Returns the compile time as &'static str in hh:mm:ss format.

unix

Returns the compile date and time as UNIX timestamp in seconds.

Constants

HOST

The host platform triple.

TARGET

The target platform triple.