all cstdout uses wrapped in preprocessor defines

unittest/internal/UnittDefinitions.cpp

@@ -1,7 +1,9 @@
 #include "UnittDefinitions.h"
 
  ReturnValue_t unitt::put_error(std::string errorId) {
+#if CPP_OSTREAM_ENABLED == 1
 	sif::error << "Unit Tester error: Failed at test ID "
 			<< errorId << "\n" << std::flush;
+#endif
 	return HasReturnvaluesIF::RETURN_FAILED;
 }