Don't require PYO3_CROSS_LIB_DIR when compiling for x86_64 from macOS…

… arm64
PyO3 · Feb 14, 2021 · 91e70cf · 91e70cf
1 parent 0b30904
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -5,6 +5,10 @@ PyO3 versions, please see the [migration guide](https://pyo3.rs/master/migration
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+### Changed
+- `PYO3_CROSS_LIB_DIR` enviroment variable no long required when compiling for x86-64 Python from macOS arm64.
+
 ## [0.13.2] - 2021-02-12
 ### Packaging
 - Lower minimum supported Rust version to 1.41. [#1421](https://github.com/PyO3/pyo3/pull/1421)

diff --git a/build.rs b/build.rs
@@ -142,6 +142,11 @@ fn cross_compiling() -> Result<Option<CrossCompileConfig>> {
         return Ok(None);
     }
 
+    if target == "x86_64-apple-darwin" && host == "aarch64-apple-darwin" {
+        // Not cross-compiling to compile for x86-64 Python from macOS arm64
+        return Ok(None);
+    }
+
     if host.starts_with(&format!(
         "{}-{}-{}",
         env::var("CARGO_CFG_TARGET_ARCH")?,