From 3d99d7e4de3d9443ec7f668e9da8de392c4bf7c2 Mon Sep 17 00:00:00 2001
From: Safihre <safihre@sabnzbd.org>
Date: Sun, 19 May 2024 12:13:29 +0200
Subject: [PATCH] Synology build fixes

---
 src/yencode/crc.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/yencode/crc.h b/src/yencode/crc.h
index 27f66f0..ae9f6d0 100644
--- a/src/yencode/crc.h
+++ b/src/yencode/crc.h
@@ -23,7 +23,7 @@ static inline int crc32_isa_level() {
 
 // computes `n % 0xffffffff` (well, almost), using some bit-hacks
 static inline uint32_t crc32_powmod(uint64_t n) {
-#ifdef __GNUC__
+#if defined(__GNUC__) && (__GNUC__ >= 5 || (defined(__clang__) && (__clang_major__ > 3 || (__clang_major__ == 3 && __clang_minor__ > 3))))
 	unsigned res;
 	unsigned carry = __builtin_uadd_overflow(n >> 32, n, &res);
 	res += carry;