From 169fbb97952b9e54149fb3f1f7fae0b8618f0b08 Mon Sep 17 00:00:00 2001
From: Jeffrey Walton <noloader@gmail.com>
Date: Thu, 17 Oct 2019 11:14:43 -0400
Subject: [PATCH] Guard <arm_neon.h> for 32-bit ARM

---
 xts.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/xts.cpp b/xts.cpp
index d86351f8..ac4cb3cf 100644
--- a/xts.cpp
+++ b/xts.cpp
@@ -24,8 +24,11 @@
 # include <immintrin.h>
 #endif
 
-#if (CRYPTOPP_ARM_NEON_HEADER)
-# include <arm_neon.h>
+
+#if defined(__aarch32__) || defined(__aarch64__) || defined(_M_ARM64)
+# if (CRYPTOPP_ARM_NEON_HEADER)
+#  include <arm_neon.h>
+# endif
 #endif
 
 // Clang intrinsic casts