--- /dev/null
+/* Determine the wordsize from the preprocessor defines. */
+
+#if defined __x86_64__ && !defined __ILP32__
+# define __WORDSIZE 64
+#else
+# define __WORDSIZE 32
+#define __WORDSIZE32_SIZE_ULONG 0
+#define __WORDSIZE32_PTRDIFF_LONG 0
+#endif
+
+#ifdef __x86_64__
+# define __WORDSIZE_TIME64_COMPAT32 1
+/* Both x86-64 and x32 use the 64-bit system call interface. */
+# define __SYSCALL_WORDSIZE 64
+#else
+# define __WORDSIZE_TIME64_COMPAT32 0
+#endif