$OpenBSD: patch-v8_src_base_macros_h,v 1.3 2015/01/22 11:16:41 robert Exp $
--- v8/src/base/macros.h.orig.port	Wed Dec  3 03:33:20 2014
+++ v8/src/base/macros.h	Sat Dec  6 11:34:27 2014
@@ -333,7 +333,7 @@ inline void USE(T) { }
 # define V8_INTPTR_C(x)   (x ## LL)
 # define V8_PTR_PREFIX    "I64"
 #elif V8_HOST_ARCH_64_BIT
-# if V8_OS_MACOSX
+# if V8_OS_MACOSX || defined(__OpenBSD__)
 #  define V8_UINT64_C(x)   (x ## ULL)
 #  define V8_INT64_C(x)    (x ## LL)
 # else
