cfg-if

A macro to ergonomically define an item depending on a large number of #[cfg] parameters. Structured like an if-else chain, the first matching branch is the item that gets emitted.

1.0.4 1.3B downloads/mo #17 most downloaded on crates.io rust-lang/cfg-if

What this package is like to depend on

Last release 10 months ago

15 Oct 2025

Ships unpredictably

gaps range from 2 months to 4.7 years

Rarely documented

notes for 3 of 15 stable releases

1 version withdrawn

withdrawn after publishing

11 years old

16 releases · first in 2015

1 release in the last 12 months

see the full history below

Release timeline

16 releases · Jul 2015 to Oct 2025

2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

Release Pre-release Withdrawn

Releases

latest 16

1.0.4 15 Oct 2025
Release notes
- Support cfg(true) and cfg(false) (#99)
- Set and test a MSRV of 1.32
- Have a single top-level rule
Open source →
Release notes
- Support cfg(true) and cfg(false) (#99)
- Set and test a MSRV of 1.32
- Have a single top-level rule
Open source →
1.0.3 19 Aug 2025
Release notes
- Revert "Remove @__identity rule."
Open source →
Release notes
- Revert "Remove @__identity rule."
Open source →
1.0.2 19 Aug 2025 withdrawn
Release notes
- Remove @__identity rule.
Open source →
Release notes
- Remove @__identity rule.
Open source →
1.0.1 09 Jun 2025
Release notes
Other
- Remove compiler-builtins from rustc-dep-of-std dependencies
- Remove redundant configuration from Cargo.toml
- More readable formatting and identifier names. (#39)
- Add expanded example to readme (#38)
Open source →
Release notes
- Remove compiler-builtins from rustc-dep-of-std dependencies
- Remove redundant configuration from Cargo.toml
- More readable formatting and identifier names. (#39)
- Add expanded example to readme (#38)
Open source →
1.0.0 06 Oct 2020

Nothing published for this version
0.1.10 24 Sep 2019

Nothing published for this version
0.1.9 15 May 2019

Nothing published for this version
0.1.8 15 May 2019

Nothing published for this version
0.1.7 04 Mar 2019

Nothing published for this version
0.1.6 20 Oct 2018

Nothing published for this version
0.1.5 13 Aug 2018

Nothing published for this version
0.1.4 27 Jun 2018

Nothing published for this version
0.1.3 03 May 2018

Nothing published for this version
0.1.2 05 Jul 2017

Nothing published for this version
0.1.1 08 Jun 2017

Nothing published for this version
0.1.0 08 Jul 2015

Nothing published for this version

cfg-if

What this package is like to depend on

Release timeline

Releases

Other

Every package, every release, already written down.