--- www/qt5-webkit/files/patch-Source_JavaScriptCore_assembler_ARM64Assembler.h	(nonexistent)
+++ www/qt5-webkit/files/patch-Source_JavaScriptCore_assembler_ARM64Assembler.h	(working copy)
@@ -0,0 +1,11 @@ 
+--- Source/JavaScriptCore/assembler/ARM64Assembler.h.orig	2018-05-28 10:30:34 UTC
++++ Source/JavaScriptCore/assembler/ARM64Assembler.h
+@@ -2683,6 +2683,8 @@ class ARM64Assembler { (public)
+             linuxPageFlush(current, current + page);
+ 
+         linuxPageFlush(current, end);
++#elif OS(FREEBSD)
++        __clear_cache(code, reinterpret_cast<char*>(code) + size);
+ #else
+ #error "The cacheFlush support is missing on this platform."
+ #endif