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-rw-r--r--src/avr/Makefile3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/avr/Makefile b/src/avr/Makefile
index c9315b99..db6d5461 100644
--- a/src/avr/Makefile
+++ b/src/avr/Makefile
@@ -5,7 +5,8 @@ CROSS_PREFIX=avr-
dirs-y += src/avr src/generic
-CFLAGS += -mmcu=$(CONFIG_MCU)
+CFLAGS-$(CONFIG_HAVE_LIMITED_CODE_SIZE) += -Os
+CFLAGS += $(CFLAGS-y) -mmcu=$(CONFIG_MCU)
# Add avr source files
src-y += avr/main.c avr/timer.c