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-rw-r--r--builddefs/build_keyboard.mk16
1 files changed, 16 insertions, 0 deletions
diff --git a/builddefs/build_keyboard.mk b/builddefs/build_keyboard.mk
index 2b9ec48e70..b5616a438f 100644
--- a/builddefs/build_keyboard.mk
+++ b/builddefs/build_keyboard.mk
@@ -13,6 +13,14 @@ endif
include paths.mk
include $(BUILDDEFS_PATH)/message.mk
+# Helper to add defines with a 'QMK_' prefix
+define add_qmk_prefix_defs
+ ifdef $1
+ # Need to cater for 'STM32L4xx+'
+ OPT_DEFS += -DQMK_$(2)="$($1)" -DQMK_$(2)_$(shell echo $($1) | sed -e 's@+@Plus@g' -e 's@[^a-zA-Z0-9]@_@g' | tr '[:lower:]' '[:upper:]')
+ endif
+endef
+
# Set the qmk cli to use
QMK_BIN ?= qmk
@@ -438,6 +446,14 @@ else
include $(TMK_PATH)/protocol/$(PLATFORM_KEY).mk
endif
+# Setup definitions based on the selected MCU
+$(eval $(call add_qmk_prefix_defs,MCU_ORIG,MCU))
+$(eval $(call add_qmk_prefix_defs,MCU_ARCH,MCU_ARCH))
+$(eval $(call add_qmk_prefix_defs,MCU_PORT_NAME,MCU_PORT_NAME))
+$(eval $(call add_qmk_prefix_defs,MCU_FAMILY,MCU_FAMILY))
+$(eval $(call add_qmk_prefix_defs,MCU_SERIES,MCU_SERIES))
+$(eval $(call add_qmk_prefix_defs,BOARD,BOARD))
+
# TODO: remove this bodge?
PROJECT_DEFS := $(OPT_DEFS)
PROJECT_INC := $(VPATH) $(EXTRAINCDIRS) $(KEYBOARD_PATHS)