--- liboctave/oct-md5.cc
+++ liboctave/oct-md5.cc
@@ -22,6 +22,7 @@
 
 #include <string>
 #include <vector>
+#include <cstdio>
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
--- scripts/gethelp.cc
+++ scripts/gethelp.cc
@@ -26,6 +26,7 @@
 
 #include <string>
 #include <iostream>
+#include <cstdio>
 
 #ifndef NPOS
 #define NPOS std::string::npos