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1# SPDX-License-Identifier: GPL-2.02include ../scripts/Makefile.include3 4bindir ?= /usr/bin5 6# This will work when gpio is built in tools env. where srctree7# isn't set and when invoked from selftests build, where srctree8# is set to ".". building_out_of_srctree is undefined for in srctree9# builds10ifndef building_out_of_srctree11srctree := $(patsubst %/,%,$(dir $(CURDIR)))12srctree := $(patsubst %/,%,$(dir $(srctree)))13endif14 15# Do not use make's built-in rules16# (this improves performance and avoids hard-to-debug behaviour);17MAKEFLAGS += -r18 19override CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include20 21ALL_TARGETS := lsgpio gpio-hammer gpio-event-mon gpio-watch22ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))23 24all: $(ALL_PROGRAMS)25 26export srctree OUTPUT CC LD CFLAGS27include $(srctree)/tools/build/Makefile.include28 29#30# We need the following to be outside of kernel tree31#32$(OUTPUT)include/linux/gpio.h: ../../include/uapi/linux/gpio.h33 mkdir -p $(OUTPUT)include/linux 2>&1 || true34 ln -sf $(CURDIR)/../../include/uapi/linux/gpio.h $@35 36prepare: $(OUTPUT)include/linux/gpio.h37 38GPIO_UTILS_IN := $(OUTPUT)gpio-utils-in.o39$(GPIO_UTILS_IN): prepare FORCE40 $(Q)$(MAKE) $(build)=gpio-utils41 42#43# lsgpio44#45LSGPIO_IN := $(OUTPUT)lsgpio-in.o46$(LSGPIO_IN): prepare FORCE $(OUTPUT)gpio-utils-in.o47 $(Q)$(MAKE) $(build)=lsgpio48$(OUTPUT)lsgpio: $(LSGPIO_IN)49 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@50 51#52# gpio-hammer53#54GPIO_HAMMER_IN := $(OUTPUT)gpio-hammer-in.o55$(GPIO_HAMMER_IN): prepare FORCE $(OUTPUT)gpio-utils-in.o56 $(Q)$(MAKE) $(build)=gpio-hammer57$(OUTPUT)gpio-hammer: $(GPIO_HAMMER_IN)58 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@59 60#61# gpio-event-mon62#63GPIO_EVENT_MON_IN := $(OUTPUT)gpio-event-mon-in.o64$(GPIO_EVENT_MON_IN): prepare FORCE $(OUTPUT)gpio-utils-in.o65 $(Q)$(MAKE) $(build)=gpio-event-mon66$(OUTPUT)gpio-event-mon: $(GPIO_EVENT_MON_IN)67 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@68 69#70# gpio-watch71#72GPIO_WATCH_IN := $(OUTPUT)gpio-watch-in.o73$(GPIO_WATCH_IN): prepare FORCE74 $(Q)$(MAKE) $(build)=gpio-watch75$(OUTPUT)gpio-watch: $(GPIO_WATCH_IN)76 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@77 78clean:79 rm -f $(ALL_PROGRAMS)80 rm -f $(OUTPUT)include/linux/gpio.h81 find $(or $(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete -o -name '\.*.cmd' -delete82 83install: $(ALL_PROGRAMS)84 install -d -m 755 $(DESTDIR)$(bindir); \85 for program in $(ALL_PROGRAMS); do \86 install $$program $(DESTDIR)$(bindir); \87 done88 89FORCE:90 91.PHONY: all install clean FORCE prepare92