I finally nailed its origin down to /usr/include/linux/compiler.h In that file, we have ===== /* Somewhere in the middle of the GCC 2.96 development cycle, we implemented a mechanism by which the user can annotate likely branch directions and expect the blocks to be reordered appropriately. Define __builtin_expect to nothing for earlier compilers. */ #if __GNUC__ == 2 && __GNUC_MINOR__ < 96 #define __builtin_expect(x, expected_value) (x) #endif #define likely(x) __builtin_expect((x),1) #define unlikely(x) __builtin_expect((x),0) ===== Notice that those defines are not guarded by __KERNEL__. I would suggest that, Axiom spells its C MACROS all in CAPS, and prefix them with AXIOM_. Is that workable? ------------------------------------------------------------ property change --2005年1月24日 18:42:59 -0600 Category: Axiom Compiler => building Axiom from source