1 
2 #ifndef __APPLE_ALTIVEC__
3 /* Prevent gcc from defining the keywords as macros. Do not manually
4  * undef for c99 stdbool.h compat.
5  */
6   #define __APPLE_ALTIVEC__ 1
7   #include_next <altivec.h>
8   #undef __APPLE_ALTIVEC__
9 #else
10   #include_next <altivec.h>
11 #endif
12