From fac0c4c5c0336c161c88a300be846fcf0fe155bf Mon Sep 17 00:00:00 2001
From: Leonid Yuriev <leo@yuriev.ru>
Date: Sun, 14 Jul 2019 02:08:14 +0300
Subject: [PATCH] mdbx-test: portability - define bswap() macros conditionally.

Change-Id: I44d7daf71bd4dd66f8821af926f0c26578624e92
---
 test/utils.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/test/utils.h b/test/utils.h
index efda8394..82d6c25b 100644
--- a/test/utils.h
+++ b/test/utils.h
@@ -26,9 +26,14 @@
 #endif
 
 #if __GNUC_PREREQ(4, 4) || defined(__clang__)
+#ifndef bswap64
 #define bswap64(v) __builtin_bswap64(v)
+#endif
+#ifndef bswap32
 #define bswap32(v) __builtin_bswap32(v)
-#if __GNUC_PREREQ(4, 8) || __has_builtin(__builtin_bswap16)
+#endif
+#if (__GNUC_PREREQ(4, 8) || __has_builtin(__builtin_bswap16)) &&               \
+    !defined(bswap16)
 #define bswap16(v) __builtin_bswap16(v)
 #endif