From 32c05d4eb6f6564762a8fba83027cbbc3e28ef22 Mon Sep 17 00:00:00 2001
From: Rosen Penev <rosenp@gmail.com>
Date: Wed, 19 Jul 2023 17:17:01 -0700
Subject: [PATCH] add std::endian support if available

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 src/image.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/image.cpp b/src/image.cpp
index a439ee155d..989c3f8aa2 100644
--- a/src/image.cpp
+++ b/src/image.cpp
@@ -46,6 +46,7 @@
 
 // + standard includes
 #include <array>
+#include <bit>
 #include <cstdio>
 #include <cstring>
 #include <limits>
@@ -168,7 +169,9 @@ bool Image::isPrintICC(uint16_t type, Exiv2::PrintStructureOption option) {
 }
 
 bool Image::isBigEndianPlatform() {
-#ifdef __LITTLE_ENDIAN__
+#ifdef __cpp_lib_endian
+  return std::endian::native == std::endian::big;
+#elif defined(__LITTLE_ENDIAN__)
   return false;
 #elif defined(__BIG_ENDIAN__)
   return true;
@@ -188,7 +191,9 @@ bool Image::isBigEndianPlatform() {
 #endif
 }
 bool Image::isLittleEndianPlatform() {
-#ifdef __LITTLE_ENDIAN__
+#ifdef __cpp_lib_endian
+  return std::endian::native == std::endian::little;
+#elif defined(__LITTLE_ENDIAN__)
   return true;
 #else
   return !isBigEndianPlatform();