diff --git a/debian/proxytunnel.substvars b/debian/proxytunnel.substvars
new file mode 100644
index 0000000..b7d6055
--- /dev/null
+++ b/debian/proxytunnel.substvars
@@ -0,0 +1 @@
+shlibs:Depends=libc6 (>= 2.3.2.ds1-4)
diff --git a/global.h b/global.h
new file mode 100644
index 0000000..b692156
--- /dev/null
+++ b/global.h
@@ -0,0 +1,31 @@
+/* GLOBAL.H - RSAREF types and constants
+ */
+
+/* PROTOTYPES should be set to one if and only if the compiler supports
+  function argument prototyping.
+  The following makes PROTOTYPES default to 0 if it has not already
+  been defined with C compiler flags.
+ */
+
+#ifndef PROTOTYPES
+#define PROTOTYPES 0
+#endif
+
+/* POINTER defines a generic pointer type */
+typedef unsigned char *POINTER;
+
+/* UINT2 defines a two byte word */
+typedef unsigned short int UINT2;
+
+/* UINT4 defines a four byte word */
+typedef unsigned long int UINT4;
+
+/* PROTO_LIST is defined depending on how PROTOTYPES is defined above.
+If using PROTOTYPES, then PROTO_LIST returns the list, otherwise it
+  returns an empty list.
+ */
+#if PROTOTYPES
+#define PROTO_LIST(list) list
+#else
+#define PROTO_LIST(list) ()
+#endif