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-rw-r--r--firmware/Makefile3
1 files changed, 2 insertions, 1 deletions
diff --git a/firmware/Makefile b/firmware/Makefile
index 9bf5570..4574e0f 100644
--- a/firmware/Makefile
+++ b/firmware/Makefile
@@ -18,6 +18,7 @@ CONFIG ?= t85_default
# make flash # to load the boot loader into flash
# make disablereset # use external reset line for IO (CAUTION: this is not easy to enable again, see README)
+CFLAGS =
CONFIGPATH = configuration/$(CONFIG)
include $(CONFIGPATH)/Makefile.inc
@@ -29,7 +30,7 @@ AVRDUDE = avrdude $(PROGRAMMER) -p $(DEVICE)
CC = avr-gcc
# Options:
-CFLAGS = -I. -g2 -Os # -Wall
+CFLAGS += -I. -g2 -Os # -Wall
CFLAGS += -I$(CONFIGPATH) -mmcu=$(DEVICE) -DF_CPU=$(F_CPU) -DBOOTLOADER_ADDRESS=0x$(BOOTLOADER_ADDRESS)
CFLAGS += -nostartfiles -ffunction-sections -fdata-sections -fpack-struct -fno-inline-small-functions -fno-move-loop-invariants -fno-tree-scev-cprop