1 files changed, 25 insertions, 0 deletions
diff --git a/third_party/rust/memoffset/build.rs b/third_party/rust/memoffset/build.rs
new file mode 100644
index 0000000000..e18810f89c
--- /dev/null
+++ b/third_party/rust/memoffset/build.rs
@@ -0,0 +1,25 @@
+extern crate autocfg;
+
+fn main() {
+    let ac = autocfg::new();
+
+    // Check for a minimum version for a few features
+    if ac.probe_rustc_version(1, 20) {
+        println!("cargo:rustc-cfg=tuple_ty");
+    }
+    if ac.probe_rustc_version(1, 31) {
+        println!("cargo:rustc-cfg=allow_clippy");
+    }
+    if ac.probe_rustc_version(1, 36) {
+        println!("cargo:rustc-cfg=maybe_uninit");
+    }
+    if ac.probe_rustc_version(1, 40) {
+        println!("cargo:rustc-cfg=doctests");
+    }
+    if ac.probe_rustc_version(1, 51) {
+        println!("cargo:rustc-cfg=raw_ref_macros");
+    }
+    if ac.probe_rustc_version(1, 65) {
+        println!("cargo:rustc-cfg=stable_const");
+    }
+}