Fix Terminal feature on ChibiOS

common_features.mk

@@ -213,6 +213,7 @@ endif
 ifeq ($(strip $(TERMINAL_ENABLE)), yes)
     SRC += $(QUANTUM_DIR)/process_keycode/process_terminal.c
     OPT_DEFS += -DTERMINAL_ENABLE
+    OPT_DEFS += -DUSER_PRINT
 endif
 
 ifeq ($(strip $(USB_HID_ENABLE)), yes)

tmk_core/common.mk

@@ -46,6 +46,8 @@ ifeq ($(PLATFORM),CHIBIOS)
   endif
   ifeq ($(strip $(AUTO_SHIFT_ENABLE)), yes)
     TMK_COMMON_SRC += $(CHIBIOS)/os/various/syscalls.c
+  else ifeq($(strip $(TERMINAL_ENABLE)), yes)
+    TMK_COMMON_SRC += $(CHIBIOS)/os/various/syscalls.c
   endif
 endif
 

tmk_core/common/print.h

@@ -73,7 +73,9 @@ void print_set_sendchar(int8_t (*print_sendchar_func)(uint8_t));
 
 #elif defined(PROTOCOL_CHIBIOS) /* PROTOCOL_CHIBIOS */
 
+#ifndef TERMINAL_ENABLE
 #  include "chibios/printf.h"
+#endif
 
 #  ifdef USER_PRINT /* USER_PRINT */