arch/powerpc64/bits/endian.h - 3p/sel4/musllibc - Git at Google

 #if __BIG_ENDIAN__
 #define __BYTE_ORDER __BIG_ENDIAN
 #else
 #define __BYTE_ORDER __LITTLE_ENDIAN
 #endif
	#if __BIG_ENDIAN__
	#define __BYTE_ORDER __BIG_ENDIAN
	#else
	#define __BYTE_ORDER __LITTLE_ENDIAN
	#endif