#include <bits/wordsize.h>
#if __WORDSIZE == 32
#include "config-32.h"
#elif __WORDSIZE == 64
#include "config-64.h"
#else
#error "Unknown word size"
#endif
The main Radix cross Linux repository contains the build scripts of packages, which have the most complete and common functionality for desktop machines
#include <bits/wordsize.h>
#if __WORDSIZE == 32
#include "config-32.h"
#elif __WORDSIZE == 64
#include "config-64.h"
#else
#error "Unknown word size"
#endif