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nrf: Use --gc-sections to reduce code size

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This saves about 6-7kB.
This commit is contained in:
Ayke van Laethem 2017-10-12 00:44:24 +02:00 committed by Damien George
parent a1116771b0
commit 38afc6553c
1 changed files with 3 additions and 1 deletions
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4
ports/nrf/Makefile
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@ -65,7 +65,7 @@ NRF_DEFINES += -DCONFIG_GPIO_AS_PINRESET
CFLAGS_CORTEX_M = -mthumb -mabi=aapcs -fsingle-precision-constant -Wdouble-promotion CFLAGS_CORTEX_M = -mthumb -mabi=aapcs -fsingle-precision-constant -Wdouble-promotion
CFLAGS_MCU_m4 = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard -ffunction-sections -fdata-sections CFLAGS_MCU_m4 = $(CFLAGS_CORTEX_M) -mtune=cortex-m4 -mcpu=cortex-m4 -mfpu=fpv4-sp-d16 -mfloat-abi=hard
CFLAGS_MCU_m0 = $(CFLAGS_CORTEX_M) --short-enums -mtune=cortex-m0 -mcpu=cortex-m0 -mfloat-abi=soft -fno-builtin CFLAGS_MCU_m0 = $(CFLAGS_CORTEX_M) --short-enums -mtune=cortex-m0 -mcpu=cortex-m0 -mfloat-abi=soft -fno-builtin
@ -74,12 +74,14 @@ CFLAGS += $(CFLAGS_MCU_$(MCU_SERIES))
CFLAGS += $(INC) -Wall -Werror -ansi -std=gnu99 -nostdlib $(COPT) $(NRF_DEFINES) $(CFLAGS_MOD) CFLAGS += $(INC) -Wall -Werror -ansi -std=gnu99 -nostdlib $(COPT) $(NRF_DEFINES) $(CFLAGS_MOD)
CFLAGS += -fno-strict-aliasing CFLAGS += -fno-strict-aliasing
CFLAGS += -fstack-usage CFLAGS += -fstack-usage
CFLAGS += -fdata-sections -ffunction-sections
CFLAGS += -Iboards/$(BOARD) CFLAGS += -Iboards/$(BOARD)
CFLAGS += -DNRF5_HAL_H='<$(MCU_VARIANT)_hal.h>' CFLAGS += -DNRF5_HAL_H='<$(MCU_VARIANT)_hal.h>'
LDFLAGS = $(CFLAGS) LDFLAGS = $(CFLAGS)
LDFLAGS += -Xlinker -Map=$(@:.elf=.map) LDFLAGS += -Xlinker -Map=$(@:.elf=.map)
LDFLAGS += -mthumb -mabi=aapcs -T $(LD_FILE) -L boards/ LDFLAGS += -mthumb -mabi=aapcs -T $(LD_FILE) -L boards/
LDFLAGS += -Wl,--gc-sections
#Debugging/Optimization #Debugging/Optimization
ifeq ($(DEBUG), 1) ifeq ($(DEBUG), 1)