1 files changed, 8 insertions, 0 deletions
diff --git a/third_party/rust/packed_simd/build.rs b/third_party/rust/packed_simd/build.rs
new file mode 100644
index 0000000000..5958b9b785
--- /dev/null
+++ b/third_party/rust/packed_simd/build.rs
@@ -0,0 +1,8 @@
+fn main() {
+    println!("cargo:rustc-env=RUSTC_BOOTSTRAP=1");
+    let target = std::env::var("TARGET")
+        .expect("TARGET environment variable not defined");
+    if target.contains("neon") {
+        println!("cargo:rustc-cfg=libcore_neon");
+    }
+}