diff -up gnuradio-3.7.0rc0/gr-channels/lib/flat_fader_impl.h.orig3 gnuradio-3.7.0rc0/gr-channels/lib/flat_fader_impl.h
--- gnuradio-3.7.0rc0/gr-channels/lib/flat_fader_impl.h.orig3	2013-06-24 21:55:16.076417510 +0200
+++ gnuradio-3.7.0rc0/gr-channels/lib/flat_fader_impl.h	2013-06-24 21:55:31.534171476 +0200
@@ -25,6 +25,7 @@
 
 #include <gnuradio/io_signature.h>
 #include <iostream>
+#include <stdint.h>
 
 #include <boost/format.hpp>
 #include <boost/random.hpp>