feat: maybe fix Windows build

Author: Bobronium

.github/workflows/cd.yaml

@@ -76,6 +76,8 @@ jobs:
           manylinux: ${{ matrix.build.manylinux || 'auto' }}
           args: --release --out dist -i ${{ steps.python.outputs.interpreters }}
           sccache: "true"
+        env:
+          CL: ${{ runner.os == 'Windows' && '/experimental:c11atomics' || '' }}
 
       - name: Upload wheel artifacts
         uses: actions/upload-artifact@v4

build.rs

@@ -1,3 +1,26 @@
 fn main() {
     pyo3_build_config::use_pyo3_cfgs();
+    emit_python_link_alias_for_custom_ffi_blocks();
+    pyo3_build_config::add_extension_module_link_args();
+}
+
+fn emit_python_link_alias_for_custom_ffi_blocks() {
+    let is_windows_target = std::env::var("CARGO_CFG_TARGET_OS")
+        .is_ok_and(|target_operating_system| target_operating_system == "windows");
+
+    if !is_windows_target {
+        return;
+    }
+
+    let interpreter_config = pyo3_build_config::get();
+    let Some(library_name) = interpreter_config.lib_name.as_ref() else {
+        return;
+    };
+
+    let link_modifier = if interpreter_config.shared { "" } else { "static=" };
+    println!("cargo:rustc-link-lib={link_modifier}pythonXY:{library_name}");
+
+    if let Some(library_directory) = interpreter_config.lib_dir.as_ref() {
+        println!("cargo:rustc-link-search=native={library_directory}");
+    }
 }