ref: 5d4c8718a6384d8a27e0bdbf09bc517ac87a4c26 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