ref: 7d2f32a9e5e2b27faa217fd3d9d2d2092f052861 dir: /src/runtime/config-unix-32.h/
#include "config-unix-64.h" //#undef WORD_SIZE //#define WORD_SIZE 32 #undef FFS #if _POSIX_VERSION >= 200112L #define FFS ffs #endif