Use platform independent starter code.

unittests.h

@@ -0,0 +1,10 @@
+#ifndef UNITTTESTS_H
+#define UNITTTESTS_H
+
+#include <stdio.h>
+
+typedef int (*UnitTestType)(void);
+
+#define RUN_UNIT_TEST(fct) printf("%80s: %d\n", #fct, fct())
+
+#endif