X-Git-Url: http://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Fendian%2Fendian.h;h=3753f49003df8d5d31208ab5b154ebe375d7e696;hb=2b3517d40f2d8ac728785a21da19db6e1230d010;hp=6732e8aa8193f11a8e131a65bee1fa87fbe8495e;hpb=759ac0f0564104d5028acd47c3e9fdb858c96d1d;p=ccan

diff --git a/ccan/endian/endian.h b/ccan/endian/endian.h
index 6732e8aa..3753f490 100644
--- a/ccan/endian/endian.h
+++ b/ccan/endian/endian.h
@@ -113,9 +113,17 @@ static inline uint64_t bswap_64(uint64_t val)
 #elif HAVE_LITTLE_ENDIAN && HAVE_BIG_ENDIAN
 #error "Can't compile for both big and little endian."
 #elif HAVE_LITTLE_ENDIAN
+#ifndef __BYTE_ORDER
 #define __BYTE_ORDER	__LITTLE_ENDIAN
+#elif __BYTE_ORDER != __LITTLE_ENDIAN
+#error "__BYTE_ORDER already defined, but not equal to __LITTLE_ENDIAN"
+#endif
 #elif HAVE_BIG_ENDIAN
+#ifndef __BYTE_ORDER
 #define __BYTE_ORDER	__BIG_ENDIAN
+#elif __BYTE_ORDER != __BIG_ENDIAN
+#error "__BYTE_ORDER already defined, but not equal to __BIG_ENDIAN"
+#endif
 #endif