From 3fba3b0a1c96b509ebdd3e659e02a6adbd72da21 Mon Sep 17 00:00:00 2001
From: Jeffrey Walton <noloader@gmail.com>
Date: Wed, 16 Jan 2019 14:43:58 -0500
Subject: [PATCH] Avoid unknown pragma warning from GCC (GH #777)

---
 scrypt.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/scrypt.cpp b/scrypt.cpp
index f2800753..f63a020e 100644
--- a/scrypt.cpp
+++ b/scrypt.cpp
@@ -18,9 +18,11 @@
 # include <omp.h>
 #endif
 
-// Issue 777
+// https://github.com/weidai11/cryptopp/issues/777
 #if CRYPTOPP_GCC_DIAGNOSTIC_AVAILABLE
-# pragma GCC diagnostic ignored "-Wtautological-compare"
+# if defined(__clang__)
+#  pragma GCC diagnostic ignored "-Wtautological-compare"
+# endif
 #endif
 
 ANONYMOUS_NAMESPACE_BEGIN