build: use runtime OUT_DIR

This helps building on systems where they may be different (bazel, buck2, etc.)
PyO3 · Apr 13, 2023 · ecc9b95 · ecc9b95
1 parent a0e285b
commit ecc9b95
Show file tree

Hide file tree

Showing 2 changed files with 8 additions and 5 deletions.
diff --git a/newsfragments/3100.changed.md b/newsfragments/3100.changed.md
@@ -0,0 +1 @@
+use runtime OUT_DIR for pyo3-build-config
diff --git a/pyo3-build-config/src/lib.rs b/pyo3-build-config/src/lib.rs
@@ -115,11 +115,13 @@ const HOST_CONFIG: &str = include_str!(concat!(env!("OUT_DIR"), "/pyo3-build-con
 #[doc(hidden)]
 #[cfg(feature = "resolve-config")]
 fn resolve_cross_compile_config_path() -> Option<PathBuf> {
-    env::var_os("TARGET").map(|target| {
-        let mut path = PathBuf::from(env!("OUT_DIR"));
-        path.push(Path::new(&target));
-        path.push("pyo3-build-config.txt");
-        path
+    env::var_os("TARGET").and_then(|target| {
+        std::env::var_os("OUT_DIR").map(|out_dir| {
+            let mut path = PathBuf::from(out_dir);
+            path.push(Path::new(&target));
+            path.push("pyo3-build-config.txt");
+            path
+        })
     })
 }