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-rw-r--r--src/stm32/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/stm32/Makefile b/src/stm32/Makefile
index 5f4d3af5..eaf989af 100644
--- a/src/stm32/Makefile
+++ b/src/stm32/Makefile
@@ -18,6 +18,7 @@ dirs-$(CONFIG_MACH_STM32L4) += lib/stm32l4
MCU := $(shell echo $(CONFIG_MCU))
MCU_UPPER := $(shell echo $(CONFIG_MCU) | tr a-z A-Z | tr X x)
+CFLAGS-$(CONFIG_HAVE_LIMITED_CODE_SIZE) += -Os
CFLAGS-$(CONFIG_MACH_STM32F0) += -mcpu=cortex-m0 -Ilib/stm32f0/include
CFLAGS-$(CONFIG_MACH_STM32F103) += -mcpu=cortex-m3
CFLAGS-$(CONFIG_MACH_N32G45x) += -mcpu=cortex-m4 -Ilib/n32g45x/include