include version string

Makefile.base

@@ -9,6 +9,14 @@ endif
 OBJ = $(SRC:%.c=$(BINDIR)%.o)
 DEP = $(SRC:%.c=$(BINDIR)%.d)
 
+GIT_STRING := $(shell git describe --abbrev=4 --dirty=-`hostname`)
+GIT_STRING += $(shell git rev-parse --abbrev-ref HEAD)
+GIT_VERSION = $(shell echo $(GIT_STRING) | sed 's/ /-/')
+ifeq ($(strip $(GIT_VERSION)),)
+	GIT_VERSION := "UNKNOWN"
+endif
+export CFLAGS += -DVERSION=\"$(GIT_VERSION)\"
+
 .PHONY: clean
 
 include $(RIOTCPU)/Makefile.base

core/kernel_init.c

@@ -64,7 +64,7 @@ static char idle_stack[KERNEL_CONF_STACKSIZE_IDLE];
 void kernel_init(void)
 {
     dINT();
-    printf("kernel_init(): This is RIOT!\n");
+    printf("kernel_init(): This is RIOT! (Version: %s)\n", VERSION);
 
     sched_init();