diff -r ea891871f481 -r bb5522e88ab2 misc/libphysfs/lzma/CPP/7zip/Archive/7z/7zHeader.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/libphysfs/lzma/CPP/7zip/Archive/7z/7zHeader.cpp	Mon Apr 10 12:06:43 2017 -0400
@@ -0,0 +1,27 @@
+// 7z/Header.cpp
+
+#include "StdAfx.h"
+#include "7zHeader.h"
+
+namespace NArchive {
+namespace N7z {
+
+Byte kSignature[kSignatureSize] = {'7' + 1, 'z', 0xBC, 0xAF, 0x27, 0x1C};
+#ifdef _7Z_VOL
+Byte kFinishSignature[kSignatureSize] = {'7' + 1, 'z', 0xBC, 0xAF, 0x27, 0x1C + 1};
+#endif
+
+class SignatureInitializer
+{
+public:
+  SignatureInitializer() 
+  { 
+    kSignature[0]--; 
+    #ifdef _7Z_VOL
+    kFinishSignature[0]--;
+    #endif
+  };
+} g_SignatureInitializer;
+
+}}
+