#if (CURL_SIZEOF_LONG == 2)
# define CURL_MASK_SLONG 0x7FFFL
# define CURL_MASK_ULONG 0xFFFFUL
-#elif (SIZEOF_LONG == 4)
+#elif (CURL_SIZEOF_LONG == 4)
# define CURL_MASK_SLONG 0x7FFFFFFFL
# define CURL_MASK_ULONG 0xFFFFFFFFUL
-#elif (SIZEOF_LONG == 8)
+#elif (CURL_SIZEOF_LONG == 8)
# define CURL_MASK_SLONG 0x7FFFFFFFFFFFFFFFL
# define CURL_MASK_ULONG 0xFFFFFFFFFFFFFFFFUL
-#elif (SIZEOF_LONG == 16)
+#elif (CURL_SIZEOF_LONG == 16)
# define CURL_MASK_SLONG 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFL
# define CURL_MASK_ULONG 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFUL
#else