diff --git a/project/include/hx/CFFIExt.h b/project/include/hx/CFFIExt.h
new file mode 100644
index 000000000..c401fa29c
--- /dev/null
+++ b/project/include/hx/CFFIExt.h
@@ -0,0 +1,57 @@
+#ifndef HX_CFFIEXT_INCLUDED
+#define HX_CFFIEXT_INCLUDED
+
+#include <hx/CFFI.h>
+
+extern void *LoadFunc(const char *inName);
+
+#ifdef IMPLEMENT_CFFI_EXT
+#define DEFFUNC_EXT(name,ret,def_args,call_args) \
+   typedef ret (*FUNC_##name)def_args; \
+   FUNC_##name IMPL_##name = NULL; \
+   extern FUNC_##name EXT_##name; \
+   bool LOADED_##name = false; \
+   bool HAS_##name () \
+   { \
+     if (!LOADED_##name) \
+     { \
+       IMPL_##name = (FUNC_##name)LoadFunc(#name); \
+       LOADED_##name = true; \
+     } \
+     return IMPL_##name != NULL; \
+   } \
+   ret REAL_##name def_args \
+   { \
+      if (!HAS_##name()) \
+      { \
+        fprintf(stderr,"Could not find external function:" #name " \n"); \
+        abort(); \
+      } \
+      EXT_##name = IMPL_##name; \
+      return IMPL_##name call_args; \
+   } \
+   FUNC_##name EXT_##name = REAL_##name;
+#else
+#define DEFFUNC_EXT(name,ret,def_args,call_args) \
+typedef ret (*FUNC_##name)def_args; \
+extern bool HAS_##name (); \
+extern FUNC_##name EXT_##name;
+#endif   
+
+#define DEFFUNC_EXT_0(ret,name) DEFFUNC_EXT(name,ret, (), ())
+#define DEFFUNC_EXT_1(ret,name,t1) DEFFUNC_EXT(name,ret, (t1 a1), (a1))
+#define DEFFUNC_EXT_2(ret,name,t1,t2) DEFFUNC_EXT(name,ret, (t1 a1, t2 a2), (a1,a2))
+#define DEFFUNC_EXT_3(ret,name,t1,t2,t3) DEFFUNC_EXT(name,ret, (t1 a1, t2 a2, t3 a3), (a1,a2,a3))
+#define DEFFUNC_EXT_4(ret,name,t1,t2,t3,t4) DEFFUNC_EXT(name,ret, (t1 a1, t2 a2, t3 a3, t4 a4), (a1,a2,a3,a4))
+#define DEFFUNC_EXT_5(ret,name,t1,t2,t3,t4,t5) DEFFUNC_EXT(name,ret, (t1 a1, t2 a2, t3 a3, t4 a4,t5 a5), (a1,a2,a3,a4,a5))
+
+DEFFUNC_EXT_1(value,pin_buffer,buffer);
+DEFFUNC_EXT_1(void,unpin_buffer,value);
+DEFFUNC_EXT_2(value,alloc_array_type,int,hxValueType);
+
+static value alloc_array_type_wrap(int size, hxValueType type)
+{
+    return HAS_alloc_array_type() ? EXT_alloc_array_type(size, type) : alloc_array (size);
+}
+
+#endif
\ No newline at end of file
diff --git a/project/src/hx/CFFIExt.cpp b/project/src/hx/CFFIExt.cpp
new file mode 100644
index 000000000..c6d87c410
--- /dev/null
+++ b/project/src/hx/CFFIExt.cpp
@@ -0,0 +1,3 @@
+#define IMPLEMENT_CFFI_EXT
+
+#include <hx/CFFIExt.h>
\ No newline at end of file