// This should be a pretty good heuristic for when to set
// COMPILER_RT_HAS_ATOMICS
if env::var_os("CARGO_CFG_TARGET_HAS_ATOMIC")
- .map(|features| features.to_string_lossy().to_lowercase().contains("cas"))
+ .map(|features| features.to_string_lossy().to_lowercase().contains("ptr"))
.unwrap_or(false)
{
cfg.define("COMPILER_RT_HAS_ATOMICS", Some("1"));