commit | fd529a3675e45e2e0e5bd41d0666819a4982a651 | [log] [tgz] |
---|---|---|
author | Matthew Maurer <mmaurer@google.com> | Tue Jul 07 00:35:19 2020 +0000 |
committer | Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com> | Tue Jul 07 00:35:19 2020 +0000 |
tree | d585bdf233225a882a5b55ddb7b8cc40fe0d7589 | |
parent | bb9eaf9562917719d18415828fe32bb025046f98 [diff] | |
parent | d91f36e7992c321a0d90183e380c170f3fc0f860 [diff] |
Support building all variants. am: d91f36e799 Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/cfg-if/+/1356185 Change-Id: I40b03f767efb09ffbb6def30094660233d86034c
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.
[dependencies] cfg-if = "0.1"
cfg_if::cfg_if! { if #[cfg(unix)] { fn foo() { /* unix specific functionality */ } } else if #[cfg(target_pointer_width = "32")] { fn foo() { /* non-unix, 32-bit functionality */ } } else { fn foo() { /* fallback implementation */ } } } fn main() { foo(); }
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