--- a/CRC32Stream.st	Mon Mar 18 16:22:38 2019 +0100
+++ b/CRC32Stream.st	Mon Mar 18 16:24:14 2019 +0100
@@ -51,7 +51,7 @@
 
 #ifdef HAS_CRC
 
-# ifdef __LP64__
+# if __POINTER_SIZE__ == 8
 static inline __uint64__
 __crc32_u64(__uint64__ crc, __uint64__ value) {
   asm("crc32q %[value], %[crc]\n" : [crc] "+r" (crc) : [value] "rm" (value));