ref: 5f1eafa05adeb65e2cd1f6db83d9cbd88c2cb0d9 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