1 files changed, 7 insertions, 1 deletions

diff --git a/build_keyboard.mk b/build_keyboard.mk
index 461b17cd7..61aebf393 100644
--- a/build_keyboard.mk
+++ b/build_keyboard.mk
@@ -180,7 +180,13 @@ ifeq ($(strip $(SERIAL_LINK_ENABLE)), yes)
         VAPTH += $(SERIAL_PATH)
 endif
 
-SRC += $(QUANTUM_DIR)/variable_trace.c
+ifneq ($(strip $(VARIABLE_TRACE)),)
+        SRC += $(QUANTUM_DIR)/variable_trace.c
+        OPT_DEFS += -DNUM_TRACED_VARIABLES=$(strip $(VARIABLE_TRACE))
+ifneq ($(strip $(MAX_VARIABLE_TRACE_SIZE)),)
+        OPT_DEFS += -DMAX_VARIABLE_TRACE_SIZE=$(strip $(MAX_VARIABLE_TRACE_SIZE))
+endif
+endif
 
 # Optimize size but this may cause error "relocation truncated to fit"
 #EXTRALDFLAGS = -Wl,--relax