cpal fails to build for 32bit systems

[sandreas]

I'm trying to build cpal on a bit of an exotic platform (mipsel-unknown-linux-musl - a Hiby R1 audio player) and unfortunately parts of the code seem to rely on 64bit data structures. This results in:

error[E0432]: unresolved import `std::sync::atomic::AtomicU64`
 --> /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cpal-0.18.1/src/host/pulseaudio/stream.rs:3:30
  |
3 |         atomic::{AtomicBool, AtomicU64, Ordering},
  |                              ^^^^^^^^^ no `AtomicU64` in `sync::atomic`
  |
help: a similar name exists in the module
  |
3 -         atomic::{AtomicBool, AtomicU64, Ordering},
3 +         atomic::{AtomicBool, AtomicU32, Ordering},
  |

I'm not sure this can be solved easily, but it may be worth a closer look. Should happen on every 32bit target. Let me know if you need more info.

Best,

sandreas

[roderickvd]

Please try #1283.