diff -up tripwire-2.4.2.2-src/src/cryptlib/algebra.h.gcc47 tripwire-2.4.2.2-src/src/cryptlib/algebra.h
--- tripwire-2.4.2.2-src/src/cryptlib/algebra.h.gcc47	2011-11-21 11:06:56.000000000 -0500
+++ tripwire-2.4.2.2-src/src/cryptlib/algebra.h	2012-03-05 15:17:32.733038609 -0500
@@ -273,7 +273,7 @@ template <class T> T AbstractEuclideanDo
 	Element g[3]={b, a};
 	unsigned int i0=0, i1=1, i2=2;
 
-	while (!Equal(g[i1], this->Zero()))
+	while (!this->Equal(g[i1], this->Zero()))
 	{
 		g[i2] = Mod(g[i0], g[i1]);
 		unsigned int t = i0; i0 = i1; i1 = i2; i2 = t;
diff -up tripwire-2.4.2.2-src/src/twadmin/twadmincl.cpp.gcc47 tripwire-2.4.2.2-src/src/twadmin/twadmincl.cpp
--- tripwire-2.4.2.2-src/src/twadmin/twadmincl.cpp.gcc47	2012-03-05 15:21:21.811528228 -0500
+++ tripwire-2.4.2.2-src/src/twadmin/twadmincl.cpp	2012-03-05 15:21:29.140447912 -0500
@@ -35,6 +35,8 @@
 
 #include "stdtwadmin.h"
 
+#include <unistd.h>
+
 #include "twadmincl.h"
 #include "twadminstrings.h"
 #include "keygeneration.h"