From 4c9b0742f5796bb82268166c723e83f7e239d40d Mon Sep 17 00:00:00 2001
From: Bruno Raoult <braoult@gmail.com>
Date: Wed, 1 Jun 2022 17:55:48 +0200
Subject: [PATCH] rwonce.h: __error__ attribute fix

---
 c/rwonce.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/c/rwonce.h b/c/rwonce.h
index d21656b..90a28bc 100644
--- a/c/rwonce.h
+++ b/c/rwonce.h
@@ -24,8 +24,12 @@
 #ifndef __BR_RWONCE_H
 #define __BR_RWONCE_H
 
-/************ originally in <include/linux/compiler_types.h> */
-# define __compiletime_error(message) __attribute__((error(message)))
+/************ originally in <include/linux/compiler_attributes.h> */
+#if __has_attribute(__error__)
+# define __compiletime_error(msg)       __attribute__((__error__(msg)))
+#else
+# define __compiletime_error(msg)
+#endif
 
 /************ originally in <include/linux/compiler_types.h> */
 /*