p_config.h: Rely on glibc endianness definitions when available

Suggested by Julien Cristau.

Signed-off-by: Matt Turner <mattst88@gmail.com>

diff --git a/src/gallium/include/pipe/p_config.h b/src/gallium/include/pipe/p_config.h
index 74a1fa297812c277d4f46c3b828b79b2fe4b7de7..d48188e24f310990d0c3f1c5e4e8742eca6a3517 100644 (file)
--- a/src/gallium/include/pipe/p_config.h
+++ b/src/gallium/include/pipe/p_config.h
@@ -111,6 +111,17 @@
  * Endian detection.
  */
 
+#ifdef __GLIBC__
+#include <endian.h>
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+# define PIPE_ARCH_LITTLE_ENDIAN
+#elif __BYTE_ORDER == __BIG_ENDIAN
+# define PIPE_ARCH_BIG_ENDIAN
+#endif
+
+#else
+
 #if defined(PIPE_ARCH_X86) || defined(PIPE_ARCH_X86_64)
 #define PIPE_ARCH_LITTLE_ENDIAN
 #elif defined(PIPE_ARCH_PPC) || defined(PIPE_ARCH_PPC_64)
@@ -119,6 +130,7 @@
 #define PIPE_ARCH_UNKNOWN_ENDIAN
 #endif
 
+#endif
 
 #if !defined(PIPE_OS_EMBEDDED)