diff -r ea891871f481 -r bb5522e88ab2 misc/libphysfs/lzma/CPP/7zip/IDecl.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libphysfs/lzma/CPP/7zip/IDecl.h	Mon Apr 10 12:06:43 2017 -0400
@@ -0,0 +1,15 @@
+// IDecl.h
+
+#ifndef __IDECL_H
+#define __IDECL_H
+
+#include "../Common/MyUnknown.h"
+
+#define DECL_INTERFACE_SUB(i, base, groupId, subId) \
+DEFINE_GUID(IID_ ## i, \
+0x23170F69, 0x40C1, 0x278A, 0, 0, 0, (groupId), 0, (subId), 0, 0); \
+struct i: public base
+
+#define DECL_INTERFACE(i, groupId, subId) DECL_INTERFACE_SUB(i, IUnknown, groupId, subId)
+
+#endif