From: Przemyslaw Skibinski <inikep@gmail.com>
Date: Mon, 13 Feb 2017 11:45:53 +0000 (+0100)
Subject: __builtin_bswap requires gcc 4.3+
X-Git-Tag: v1.1.4~1^2~62^2~1^2~6
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=09c8e5390dbaaaca84b27e99d55e1052f5e8dcef;p=thirdparty%2Fzstd.git

__builtin_bswap requires gcc 4.3+
---

diff --git a/lib/common/mem.h b/lib/common/mem.h
index aff044de1..1c223fe5e 100644
--- a/lib/common/mem.h
+++ b/lib/common/mem.h
@@ -182,7 +182,7 @@ MEM_STATIC U32 MEM_swap32(U32 in)
 {
 #if defined(_MSC_VER)     /* Visual Studio */
     return _byteswap_ulong(in);
-#elif defined (__GNUC__)
+#elif defined (__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 403)
     return __builtin_bswap32(in);
 #else
     return  ((in << 24) & 0xff000000 ) |
@@ -196,7 +196,7 @@ MEM_STATIC U64 MEM_swap64(U64 in)
 {
 #if defined(_MSC_VER)     /* Visual Studio */
     return _byteswap_uint64(in);
-#elif defined (__GNUC__)
+#elif defined (__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 403)
     return __builtin_bswap64(in);
 #else
     return  ((in << 56) & 0xff00000000000000ULL) |