1 files changed, 1 insertions, 0 deletions
diff --git a/defines.mk b/defines.mk
index 8cb5cfc..890e03c 100644
--- a/defines.mk
+++ b/defines.mk
@@ -149,6 +149,7 @@ CFLAGS += -Wstrict-prototypes
 CFLAGS += -I$(LIB_DIR)
 CFLAGS += -DF_CPU=$(F_CPU)UL
 CFLAGS += -D__BOARD_$(BOARD_TYPE)__
+CFLAGS += -DARCH=ARCH_$(ARCH)
 CFLAGS += -std=c99