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Makefile: Reduce use of $^ in build rules 

It's rare to use all of a target's prerequisites in a recipe - replace
most cases with $< (the target's first prerequisite).

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-03-02 12:01:44 -05:00
parent 9430fea2c5
commit 399d539969
5 changed files with 9 additions and 9 deletions
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4
src/atsam/Makefile
View File

@ -59,7 +59,7 @@ lib/bossac/bin/bossac:
$(Q)make -C lib/bossac bin/bossac
flash: $(OUT)klipper.bin lib/bossac/bin/bossac
@echo " Flashing $^ to $(FLASH_DEVICE) via bossac"
@echo " Flashing $< to $(FLASH_DEVICE) via bossac"
$(Q)if [ -z $(FLASH_DEVICE) ]; then echo "Please specify FLASH_DEVICE"; exit 1; fi
$(Q)lib/bossac/bin/bossac -U -p "$(FLASH_DEVICE)" -a -e -w $(OUT)klipper.bin -v -b
$(Q)lib/bossac/bin/bossac -U -p "$(FLASH_DEVICE)" -a -e -w $< -v -b
$(Q)lib/bossac/bin/bossac -p "$(FLASH_DEVICE)" -b -R > /dev/null 2>&1 || true

4
src/atsamd/Makefile
View File

@ -61,6 +61,6 @@ BOSSAC_OFFSET-$(CONFIG_MACH_SAMD21) := 0x2000
BOSSAC_OFFSET-$(CONFIG_MACH_SAMD51) := 0x4000
flash: $(OUT)klipper.bin lib/bossac/bin/bossac
@echo " Flashing $^ to $(FLASH_DEVICE) via bossac"
@echo " Flashing $< to $(FLASH_DEVICE) via bossac"
$(Q)if [ -z $(FLASH_DEVICE) ]; then echo "Please specify FLASH_DEVICE"; exit 1; fi
$(Q)lib/bossac/bin/bossac -U -p "$(FLASH_DEVICE)" -a --offset=$(BOSSAC_OFFSET-y) -w $(OUT)klipper.bin -v -b -R
$(Q)lib/bossac/bin/bossac -U -p "$(FLASH_DEVICE)" -a --offset=$(BOSSAC_OFFSET-y) -w $< -v -b -R

4
src/avr/Makefile
View File

@ -29,6 +29,6 @@ $(OUT)klipper.elf.hex: $(OUT)klipper.elf
$(Q)$(OBJCOPY) -j .text -j .data -O ihex $< $@
flash: $(OUT)klipper.elf.hex
@echo " Flashing $^ to $(FLASH_DEVICE) via avrdude"
@echo " Flashing $< to $(FLASH_DEVICE) via avrdude"
$(Q)if [ -z $(FLASH_DEVICE) ]; then echo "Please specify FLASH_DEVICE"; exit 1; fi
$(Q)avrdude -p$(CONFIG_MCU) -c$(CONFIG_AVRDUDE_PROTOCOL) -P"$(FLASH_DEVICE)" -D -U"flash:w:$(OUT)klipper.elf.hex:i"
$(Q)avrdude -p$(CONFIG_MCU) -c$(CONFIG_AVRDUDE_PROTOCOL) -P"$(FLASH_DEVICE)" -D -U"flash:w:$(<):i"

2
src/pru/Makefile
View File

@ -31,7 +31,7 @@ $(OUT)pru0.elf: $(patsubst %.c, $(OUT)src/%.o,$(pru0-y))
$(OUT)pru1.elf: $(OUT)klipper.elf
@echo " Linking $@"
$(Q)$(CC) $(CFLAGS_pru1.elf) $^ -o $@
$(Q)$(CC) $(CFLAGS_pru1.elf) $< -o $@
flash: $(OUT)pru0.elf $(OUT)pru1.elf
@echo " Flashing"

4
src/stm32f1/Makefile
View File

@ -47,5 +47,5 @@ $(OUT)klipper.bin: $(OUT)klipper.elf
$(Q)$(OBJCOPY) -O binary $< $@
flash: $(OUT)klipper.bin
@echo " Flashing $^ to $(FLASH_DEVICE) via stm32flash"
$(Q)stm32flash -w $(OUT)klipper.bin -v -g 0 $(FLASH_DEVICE)
@echo " Flashing $< to $(FLASH_DEVICE) via stm32flash"
$(Q)stm32flash -w $< -v -g 0 $(FLASH_DEVICE)