Turn on unused-extern-crates warning.

servo · Apr 22, 2016 · 4bdc895 · 4bdc895
1 parent 41c2932
commit 4bdc895
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/python/servo/build_commands.py b/python/servo/build_commands.py
@@ -230,6 +230,8 @@ def build(self, target=None, release=False, dev=False, jobs=None,
         if not (self.config["build"]["ccache"] == ""):
             env['CCACHE'] = self.config["build"]["ccache"]
 
+        env['RUSTFLAGS'] = env.get('RUSTFLAGS', "") + " -W unused-extern-crates"
+
         status = call(
             ["cargo", "build"] + opts,
             env=env, cwd=self.servo_crate(), verbose=verbose)