Crate features / cfg-if
Feature flags · cfg-if 1.0.5 · from crates.io 2026-10-24
cfg-if features: what each one does, and the line to copy
Short answercfg-if 1.0.5 has 1 feature. Nothing is on by default: turn on what you use. It needs Rust 1.32 or newer.
Pick features
Every feature
| Feature | In default | Turns on |
|---|---|---|
rustc-dep-of-std | core |
dep:x turns on the optional dependency x; x/y turns on feature y of dependency x (with ?, only if x is already on).
MSRV history
The minimum Rust version cfg-if declares (rust-version), and the release that changed it:
- 1.0.4 (2025-10-15): Rust 1.32
Stuck on an older compiler? Pin the last version that supports it, for example cargo update -p cfg-if --precise <version>, or use resolver 3, which picks compatible versions for you.
More on cfg-if
Real downloads, dependents and alternatives: cfg-if crate data (4.3M real downloads a day, 2,759 dependents).
docs.rs feature list · crates.io · license MIT OR Apache-2.0 · edition 2018
Up next
Before you depend on itcfg-if crate dataReal downloads, dependents, alternatives.Read it next →Did this answer your question?