From 80457c9c4675568fb8fd763648576409f97b4b16 Mon Sep 17 00:00:00 2001
From: don bright <hugh.m.bright@gmail.com>
Date: Sun, 3 Mar 2013 21:16:27 -0600
Subject: older gcc doesn't know about __builtin_bswap32


diff --git a/src/import.cc b/src/import.cc
index 8980448..fdb7aae 100644
--- a/src/import.cc
+++ b/src/import.cc
@@ -133,7 +133,9 @@ union stl_facet {
 void uint32_byte_swap( uint32_t &x )
 {
 #if defined(__GNUC__) || defined(__clang__)
+#if defined(__builtin_bswap32)
 	x = __builtin_bswap32( x );
+#endif
 #elif defined(_MSC_VER)
 	x = _byteswap_ulong( x );
 #else
-- 
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