--- third_party/opus/BUILD.gn.orig	2022-02-07 13:39:41 UTC
+++ third_party/opus/BUILD.gn
@@ -41,7 +41,6 @@ config("opus_private_config") {
     # Prefer alloca() over variable length arrays which are often inefficient;
     # the opus code will automatically handle this correctly per-platform.
     "USE_ALLOCA",
-    "HAVE_ALLOCA_H",
   ]
 
   include_dirs = [