diff --git a/src/debug.h b/src/debug.h
new file mode 100644
index 0000000..5ba9387
--- /dev/null
+++ b/src/debug.h
@@ -0,0 +1,77 @@
+
+#ifndef DEBUG_H
+#define DEBUG_H
+
+#define NODEBUG_L 0
+#define ERROR_L 1
+#define WARNING_L 2
+#define INFO_L 3
+#define DEBUG_L 4
+
+#ifndef LOG_LEVEL
+#define LOG_LEVEL INFO_L
+#endif
+
+// -------------
+
+#ifndef COLOR_DEBUG
+#define COLOR_DEBUG   "\e[0;34m"
+#endif
+#ifndef COLOR_WARNING
+#define COLOR_WARNING "\e[01;33m"
+#endif
+#ifndef COLOR_ERROR
+#define COLOR_ERROR   "\e[01;31m"
+#endif
+
+#define COLOR_END "\e[0m"
+
+#if (LOG_LEVEL >= DEBUG_L)
+# ifdef COLOR_DEBUG
+#  define DEBUG(str, ...) \
+    fprintf(stdout, COLOR_DEBUG "DEBUG: " str COLOR_END, ##__VA_ARGS__)
+# else
+#  define DEBUG(...) \
+    fprintf(stdout, "DEBUG: " __VA_ARGS__)
+# endif
+#else
+#define DEBUG(...)
+#endif
+
+#if (LOG_LEVEL >= INFO_L)
+# ifdef COLOR_INFO
+#  define INFO(str, ...) \
+    fprintf(stdout, COLOR_INFO str COLOR_END, ##__VA_ARGS__)
+# else
+#  define INFO(...) \
+    fprintf(stdout, __VA_ARGS__)
+# endif
+#else
+#define INFO(...)
+#endif
+
+#if (LOG_LEVEL >= WARNING_L)
+# ifdef COLOR_WARNING
+#  define WARNING(str, ...) \
+    fprintf(stderr, COLOR_WARNING "WARNING: " str COLOR_END, ##__VA_ARGS__)
+# else
+#  define WARNING(...) \
+    fprintf(stderr, "WARNING: " __VA_ARGS__)
+# endif
+#else
+#define WARNING(...)
+#endif
+
+#if (LOG_LEVEL >= ERROR_L)
+# ifdef COLOR_ERROR
+#  define ERROR(str, ...) \
+    fprintf(stderr, COLOR_ERROR "ERROR: " str COLOR_END, ##__VA_ARGS__)
+# else
+#  define ERROR(...) \
+    fprintf(stderr, "ERROR: " __VA_ARGS__)
+# endif
+#else
+#define ERROR(...)
+#endif
+
+#endif