File seq24-assert.patch of Package seq24

--- src/perform.cpp
+++ src/perform.cpp
@@ -23,6 +23,7 @@
 #include <stdio.h>
 #include <time.h>
 #include <sched.h>
+#include <assert.h>
 
 //For keys
 #include <gtkmm/accelkey.h>