1 files changed, 25 insertions, 0 deletions
diff --git a/vendor/im-rc/build.rs b/vendor/im-rc/build.rs
new file mode 100644
index 000000000..02d8da393
--- /dev/null
+++ b/vendor/im-rc/build.rs
@@ -0,0 +1,25 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+use std::env;
+
+fn main() {
+    println!("cargo:rerun-if-changed=build.rs");
+    if let Some(channel) = version_check::Channel::read() {
+        if channel.supports_features() {
+            println!("cargo:rustc-cfg=has_specialisation");
+        }
+    }
+    let pkgname = env::var("CARGO_PKG_NAME").expect("Cargo didn't set the CARGO_PKG_NAME env var!");
+    let test_rc = env::var("IM_TEST_RC").is_ok();
+    match pkgname.as_str() {
+        "im" => {
+            if !test_rc {
+                println!("cargo:rustc-cfg=threadsafe")
+            }
+        }
+        "im-rc" => {}
+        _ => panic!("unexpected package name!"),
+    }
+}