Reorganized directory structure - directory 'internal' pulled up one level. No logical changes.

libuavcan/include/uavcan/debug.hpp

@@ -0,0 +1,30 @@
+/*
+ * Debug stuff, should only be used for library development.
+ * Copyright (C) 2014 Pavel Kirienko <pavel.kirienko@gmail.com>
+ */
+
+#pragma once
+
+#if UAVCAN_DEBUG
+
+#include <cstdio>
+#include <cstdarg>
+
+#if __GNUC__
+__attribute__ ((format (printf, 2, 3)))
+#endif
+static void UAVCAN_TRACE(const char* src, const char* fmt, ...)
+{
+    va_list args;
+    std::printf("UAVCAN: %s: ", src);
+    va_start(args, fmt);
+    std::vprintf(fmt, args);
+    va_end(args);
+    std::puts("");
+}
+
+#else
+
+#  define UAVCAN_TRACE(...) ((void)0)
+
+#endif