--- a/targets/plc_main_head.c	Thu Apr 12 22:32:12 2018 +0200
+++ b/targets/plc_main_head.c	Thu Apr 12 22:32:43 2018 +0200
@@ -35,6 +35,9 @@
 /* Help to quit cleanly when init fail at a certain level */
 static int init_level = 0;
 
+/* Prototype for Logging to help spotting errors at init */
+int LogMessage(uint8_t level, char* buf, uint32_t size);
+
 /*
  * Prototypes of functions exported by plugins
  **/