Ignore C4668 when preprocessing MSVC

mozilla · Apr 13, 2023 · 0592bc0 · 0592bc0
1 parent 0af46b1
commit 0592bc0
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/compiler/msvc.rs b/src/compiler/msvc.rs
@@ -913,6 +913,10 @@ where
         .args(&parsed_args.preprocessor_args)
         .args(&parsed_args.dependency_args)
         .args(&parsed_args.common_args)
+        // Windows SDK generates C4668 during preprocessing, but compiles fine.
+        // Making sure that 4668 is a level 4 warning prevents failing preprocessing on it.
+        // Read for more info: https://github.com/mozilla/sccache/issues/1725
+        .arg("/w44668")
         .env_clear()
         .envs(env_vars.iter().map(|&(ref k, ref v)| (k, v)))
         .current_dir(cwd);