cfg_log

Compile time conditional logging.

Usage

The main crate should depend on cfg_log and optionally on log.

toml [dependencies] cfg_log = "0.1.0" log = { version = "0.4.17", optional = true }

Then logging can be done more concisely with

```rust use cfg_log::*;

fn main() { debug!("the answer is {}", 42); } ```

instead of

```rust

[cfg(feature = "log")]

use log::*;

fn main() { #[cfg(feature = "log")] debug!("the answer is {}", 42); } ```

The debug! macro will automatically expand to log::debug! if the log feature is enabled, or it will be discarded at compile time otherwise.

See testcfglog for an example package.