include: Define __WORDSIZE if needed.
Signed-off-by: Andreas Schneider <asn@cryptomilk.org>
diff --git a/include/cmocka.h b/include/cmocka.h
index d1c057b..2980055 100644
--- a/include/cmocka.h
+++ b/include/cmocka.h
@@ -60,6 +60,16 @@
* Largest integral type. This type should be large enough to hold any
* pointer or integer supported by the compiler.
*/
+
+/* If __WORDSIZE is not set, try to figure it out and default to 32 bit. */
+#ifndef __WORDSIZE
+# if defined(__x86_64__) && !defined(__ILP32__)
+# define __WORDSIZE 64
+# else
+# define __WORDSIZE 32
+# endif
+#endif
+
#ifndef LargestIntegralType
# if __WORDSIZE == 64
# define LargestIntegralType unsigned long int
