From c1295a35570686da86723a5ea577b2cf1346180b Mon Sep 17 00:00:00 2001
From: Nick Brassel <nick@tzarc.org>
Date: Fri, 23 Oct 2020 04:37:34 +1100
Subject: [PATCH] Add definition based on currently-selected serial driver.
 (#10716)

* Add definition based on currently-selected serial driver.

* Apply suggestions from code review

Suggestions from zvecr.

Co-authored-by: Joel Challis <git@zvecr.com>

Co-authored-by: Joel Challis <git@zvecr.com>
---
 common_features.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/common_features.mk b/common_features.mk
index 7ed77a889d..32028c8af5 100644
--- a/common_features.mk
+++ b/common_features.mk
@@ -450,6 +450,7 @@ ifeq ($(strip $(SPLIT_KEYBOARD)), yes)
         endif
 
         SERIAL_DRIVER ?= bitbang
+        OPT_DEFS += -DSERIAL_DRIVER_$(strip $(shell echo $(SERIAL_DRIVER) | tr '[:lower:]' '[:upper:]'))
         ifeq ($(strip $(SERIAL_DRIVER)), bitbang)
             QUANTUM_LIB_SRC += serial.c
         else