1 files changed, 3 insertions, 0 deletions
diff --git a/missing.h b/missing.h
index 6879635040..2b3bb16e5d 100644
--- a/missing.h
+++ b/missing.h
@@ -65,6 +65,9 @@ struct timezone {
 };
 #endif
 
+#ifdef RUBY_EXPORT
+#undef RUBY_EXTERN
+#endif
 #ifndef RUBY_EXTERN
 #define RUBY_EXTERN extern
 #endif