X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=common_features.mk;h=97febe2e77e90a62b9dc07baf55e78db291add71;hb=155e9310ff685f557287749bef2e02510538a6d9;hp=bd88e04d624dd8001801ccfb8988911e3e67c21c;hpb=9739d6ba0ad3da93f42cc28a78a6722d39ad3d72;p=qmk_firmware.git

diff --git a/common_features.mk b/common_features.mk
index bd88e04d6..97febe2e7 100644
--- a/common_features.mk
+++ b/common_features.mk
@@ -263,6 +263,11 @@ ifneq ($(strip $(CUSTOM_MATRIX)), yes)
 endif
 
 ifeq ($(strip $(SPLIT_KEYBOARD)), yes)
+    SERIAL_BACKWARD_COMPAT := $(wildcard $(QUANTUM_DIR)/split_common/serial_backward_compatibility.h)
+    ifneq ($(SERIAL_BACKWARD_COMPAT),)
+      CONFIG_H += $(SERIAL_BACKWARD_COMPAT)
+      # $(info CONFIG_H=$(CONFIG_H))
+    endif
     OPT_DEFS += -DSPLIT_KEYBOARD
     QUANTUM_SRC += $(QUANTUM_DIR)/split_common/split_flags.c \
                 $(QUANTUM_DIR)/split_common/split_util.c \