From ff013388249c4f51537e09f9f84b51e51d77cf10 Mon Sep 17 00:00:00 2001
From: Eugene Golushkov <e.golushkov@nospam_gmail.com>
Date: Tue, 8 Sep 2020 19:45:42 +0300
Subject: [PATCH] OGRE_CPU: cleaned definition to fix build for Apple Silicon
 aka macOS on ARM64; moved to Platform.h as it is already used there.

---
 OgreMain/include/OgrePlatform.h            | 56 +++++++++++++++-------
 OgreMain/include/OgrePlatformInformation.h | 28 -----------
 2 files changed, 40 insertions(+), 44 deletions(-)

diff --git a/OgreMain/include/OgrePlatform.h b/OgreMain/include/OgrePlatform.h
index de4726358dbca796f6fc8d8c76f6efc9d661d532..c187b816d04ec79168faa5883b7452cbc3f58473 100644
--- a/OgreMain/include/OgrePlatform.h
+++ b/OgreMain/include/OgrePlatform.h
@@ -56,6 +56,46 @@ namespace Ogre {
 #define OGRE_ARCHITECTURE_32 1
 #define OGRE_ARCHITECTURE_64 2
 
+#define OGRE_CPU_UNKNOWN    0
+#define OGRE_CPU_X86        1
+#define OGRE_CPU_PPC        2
+#define OGRE_CPU_ARM        3
+#define OGRE_CPU_MIPS       4
+
+/* Find CPU type */
+#if defined(__i386__) || defined(__x86_64__) || defined(_M_IX86) || defined(_M_X64) || defined(_M_AMD64)
+#   define OGRE_CPU OGRE_CPU_X86
+#elif defined(__ppc__) || defined(__ppc64__) || defined(_M_PPC)
+#   define OGRE_CPU OGRE_CPU_PPC
+#elif defined(__arm__) || defined(__arm64__) || defined(__aarch64__) || defined(_M_ARM) || defined(_M_ARM64) 
+#   define OGRE_CPU OGRE_CPU_ARM
+#elif defined(__mips__) || defined(__mips64) || defined(__mips64_) || defined(_M_MIPS)
+#   define OGRE_CPU OGRE_CPU_MIPS
+#else
+#   define OGRE_CPU OGRE_CPU_UNKNOWN
+#endif
+
+/* Find the arch type */
+#if defined(__x86_64__) || defined(_M_X64) || defined(_M_X64) || defined(_M_AMD64) \
+ || defined(__ppc64__) \
+ || defined(__arm64__) || defined(__aarch64__) || defined(_M_ARM64) \
+ || defined(__mips64) || defined(__mips64_) \
+ || defined(__alpha__) || defined(__ia64__) || defined(__s390__) || defined(__s390x__)
+#   define OGRE_ARCH_TYPE OGRE_ARCHITECTURE_64
+#else
+#   define OGRE_ARCH_TYPE OGRE_ARCHITECTURE_32
+#endif
+
+/* Determine CPU endian.
+   We were once in situation when XCode could produce mixed endian fat binary with x86 and ppc archs inside, so it's safer to sniff compiler macros too
+ */
+#if defined(OGRE_CONFIG_BIG_ENDIAN) || (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
+#    define OGRE_ENDIAN OGRE_ENDIAN_BIG
+#else
+#    define OGRE_ENDIAN OGRE_ENDIAN_LITTLE
+#endif
+
+
 /* Finds the compiler type and version.
 */
 #if (defined( __WIN32__ ) || defined( _WIN32 )) && defined(__ANDROID__) // We are using NVTegra
@@ -170,13 +210,6 @@ namespace Ogre {
 #   define OGRE_PLATFORM OGRE_PLATFORM_FREEBSD
 #else
 #   define OGRE_PLATFORM OGRE_PLATFORM_LINUX
-#endif
-
-    /* Find the arch type */
-#if defined(__x86_64__) || defined(_M_X64) || defined(_M_AMD64) || defined(_M_ARM64) || defined(__powerpc64__) || defined(__alpha__) || defined(__ia64__) || defined(__s390__) || defined(__s390x__) || defined(__arm64__) || defined(__aarch64__) || defined(__mips64) || defined(__mips64_)
-#   define OGRE_ARCH_TYPE OGRE_ARCHITECTURE_64
-#else
-#   define OGRE_ARCH_TYPE OGRE_ARCHITECTURE_32
 #endif
 
 // For generating compiler warnings - should work on any compiler
@@ -366,15 +399,6 @@ namespace Ogre {
 #   define __OGRE_HAVE_DIRECTXMATH 0
 #endif
 
-//----------------------------------------------------------------------------
-// Endian Settings
-// check for BIG_ENDIAN config flag, set OGRE_ENDIAN correctly
-#ifdef OGRE_CONFIG_BIG_ENDIAN
-#    define OGRE_ENDIAN OGRE_ENDIAN_BIG
-#else
-#    define OGRE_ENDIAN OGRE_ENDIAN_LITTLE
-#endif
-
 //----------------------------------------------------------------------------
 // Set the default locale for strings
 #if OGRE_PLATFORM == OGRE_PLATFORM_ANDROID
diff --git a/OgreMain/include/OgrePlatformInformation.h b/OgreMain/include/OgrePlatformInformation.h
index 00bc867449c1a297362cf6695ea1bbc338e233a4..cb89801e6af4d474747e0ab3c3f31ec31377234f 100644
--- a/OgreMain/include/OgrePlatformInformation.h
+++ b/OgreMain/include/OgrePlatformInformation.h
@@ -35,34 +35,6 @@ namespace Ogre {
 // TODO: Puts following macros into OgrePlatform.h?
 //
 
-/* Initial CPU stuff to set.
-*/
-#define OGRE_CPU_UNKNOWN    0
-#define OGRE_CPU_X86        1
-#define OGRE_CPU_PPC        2
-#define OGRE_CPU_ARM        3
-#define OGRE_CPU_MIPS       4
-
-/* Find CPU type
-*/
-#if (defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))) || \
-    (defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)))
-#   define OGRE_CPU OGRE_CPU_X86
-
-#elif OGRE_PLATFORM == OGRE_PLATFORM_APPLE && defined(__BIG_ENDIAN__)
-#   define OGRE_CPU OGRE_CPU_PPC
-#elif OGRE_PLATFORM == OGRE_PLATFORM_APPLE
-#   define OGRE_CPU OGRE_CPU_X86
-#elif OGRE_PLATFORM == OGRE_PLATFORM_APPLE_IOS && (defined(__i386__) || defined(__x86_64__))
-#   define OGRE_CPU OGRE_CPU_X86
-#elif defined(__arm__) || defined(_M_ARM) || defined(__arm64__) || defined(__aarch64__)
-#   define OGRE_CPU OGRE_CPU_ARM
-#elif defined(__mips64) || defined(__mips64_)
-#   define OGRE_CPU OGRE_CPU_MIPS
-#else
-#   define OGRE_CPU OGRE_CPU_UNKNOWN
-#endif
-
 /* Find how to declare aligned variable.
 */
 #if OGRE_COMPILER == OGRE_COMPILER_MSVC