Index: mplex/inputstrm.cpp
--- mplex/inputstrm.cpp.orig
+++ mplex/inputstrm.cpp
@@ -23,6 +23,7 @@
 
 #include "config.h"
 #include <assert.h>
+#include <limits.h>
 
 #include "mjpeg_types.h"
 #include "fastintfns.h"
