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Makefile: Add generic rule for precompiling linker scripts

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Add a general build rule to precompile *.lds.S files to *.ld files.
Remove the custom rules in src/atsamd/Makefile and src/stm32/Makefile.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
2019-08-21 12:18:13 -04:00
parent 9c15f00e60
commit 351910c5ac
3 changed files with 12 additions and 18 deletions
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13
src/stm32/Makefile
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@@ -13,9 +13,11 @@ MCU_UPPER := $(shell echo $(CONFIG_MCU) | tr a-z A-Z | tr X x)
CFLAGS-$(CONFIG_MACH_STM32F1) += -mcpu=cortex-m3 -Ilib/stm32f1/include
CFLAGS-$(CONFIG_MACH_STM32F4) += -mcpu=cortex-m4 -Ilib/stm32f4/include
CFLAGS-$(CONFIG_MACH_STM32F4) += -mfpu=fpv4-sp-d16 -mfloat-abi=hard
CFLAGS += $(CFLAGS-y) -D$(MCU_UPPER) -mthumb -Ilib/cmsis-core
CFLAGS_klipper.elf += -T $(OUT)stm32.ld --specs=nano.specs --specs=nosys.specs
CFLAGS_klipper.elf += --specs=nano.specs --specs=nosys.specs
CFLAGS_klipper.elf += -T $(OUT)src/stm32/stm32.ld
$(OUT)klipper.elf: $(OUT)src/stm32/stm32.ld
# Add source files
src-y += stm32/main.c stm32/watchdog.c stm32/gpio.c
@@ -41,12 +43,6 @@ asmsrc-$(CONFIG_MACH_STM32F1) := ../lib/stm32f1/gcc/startup_$(MCU).s
asmsrc-$(CONFIG_MACH_STM32F4) := ../lib/stm32f4/gcc/startup_$(MCU).s
OBJS_klipper.elf += $(patsubst %.s, $(OUT)src/%.o,$(asmsrc-y))
# Build the linker script
$(OUT)stm32.ld: src/stm32/stm32.lds.S $(OUT)board-link
@echo " Preprocessing $@"
$(Q)$(CPP) -I$(OUT) -P -MD -MT $@ $< -o $@
$(OUT)klipper.elf: $(OUT)stm32.ld
# Binary output file rules
target-y += $(OUT)klipper.bin
@@ -54,6 +50,7 @@ $(OUT)klipper.bin: $(OUT)klipper.elf
@echo " Creating hex file $@"
$(Q)$(OBJCOPY) -O binary $< $@
# Flash rules
FLASH_TYPE-$(CONFIG_MACH_STM32F1) := stm32f1
FLASH_TYPE-$(CONFIG_MACH_STM32F4) := stm32f4