SDL-1.2: updates to SDL_endian.h.

From 6e0df89a49dcb131b097ae040e2a2b26338ebe18 Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Sun, 31 Jul 2022 23:28:40 +0300
Subject: [PATCH] updates to SDL_endian.h.

---
 include/SDL_endian.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/include/SDL_endian.h b/include/SDL_endian.h
index 638b52c2..4a99d0e8 100644
--- a/include/SDL_endian.h
+++ b/include/SDL_endian.h
@@ -42,9 +42,12 @@
 #ifdef __linux__
 #include <endian.h>
 #define SDL_BYTEORDER  __BYTE_ORDER
-#elif defined(__OpenBSD__)
+#elif defined(__OpenBSD__) || defined(__DragonFly__)
 #include <endian.h>
 #define SDL_BYTEORDER  BYTE_ORDER
+#elif defined(__FreeBSD__) || defined(__NetBSD__)
+#include <sys/endian.h>
+#define SDL_BYTEORDER  BYTE_ORDER
 /* predefs from newer gcc and clang versions: */
 #elif defined(__ORDER_LITTLE_ENDIAN__) && defined(__ORDER_BIG_ENDIAN__) && defined(__BYTE_ORDER__)
 #if (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
@@ -58,7 +61,7 @@
 #if defined(__hppa__) || \
     defined(__m68k__) || defined(mc68000) || defined(_M_M68K) || \
     (defined(__MIPS__) && defined(__MIPSEB__)) || \
-    defined(__ppc__) || defined(__POWERPC__) || defined(_M_PPC) || \
+    defined(__ppc__) || defined(__POWERPC__) || defined(__powerpc__) || defined(__PPC__) || \
     defined(__sparc__)
 #define SDL_BYTEORDER	SDL_BIG_ENDIAN
 #else