From ee1bb69f2d7c086df72a01632b0563c92896e8b1 Mon Sep 17 00:00:00 2001
From: Jean-Marc Valin <jmvalin@amazon.com>
Date: Mon, 27 Nov 2023 17:55:27 -0500
Subject: [PATCH] Only force auto-vectorization for GCC >= 5.1

---
 dnn/nnet_arch.h | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/dnn/nnet_arch.h b/dnn/nnet_arch.h
index b61ebf54..12a467e5 100644
--- a/dnn/nnet_arch.h
+++ b/dnn/nnet_arch.h
@@ -40,7 +40,8 @@
 
 /* Force vectorization on for DNN code because some of the loops rely on
    compiler vectorization rather than explicitly using intrinsics. */
-#ifdef __GNUC__
+#if OPUS_GNUC_PREREQ(5,1)
+#define GCC_POP_OPTIONS
 #pragma GCC push_options
 #pragma GCC optimize("tree-vectorize")
 #endif
@@ -223,7 +224,7 @@ void RTCD_SUF(compute_conv2d_)(const Conv2dLayer *conv, float *out, float *mem,
    }
 }
 
-#ifdef __GNUC__
+#ifdef GCC_POP_OPTIONS
 #pragma GCC pop_options
 #endif