# SPDX-License-Identifier: GPL-2.0include ../scripts/Makefile.include bindir ?= /usr/bin # This will work when gpio is built in tools env. where srctree# isn't set and when invoked from selftests build, where srctree# is set to ".". building_out_of_srctree is undefined for in srctree# buildsifndef building_out_of_srctreesrctree := $(patsubst %/,%,$(dir $(CURDIR)))srctree := $(patsubst %/,%,$(dir $(srctree)))endif # Do not use make's built-in rules# (this improves performance and avoids hard-to-debug behaviour);MAKEFLAGS += -r override CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include ALL_TARGETS := lsgpio gpio-hammer gpio-event-mon gpio-watchALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS)) all: $(ALL_PROGRAMS) export srctree OUTPUT CC LD CFLAGSinclude $(srctree)/tools/build/Makefile.include ## We need the following to be outside of kernel tree#$(OUTPUT)include/linux/gpio.h: ../../include/uapi/linux/gpio.h	mkdir -p $(OUTPUT)include/linux 2>&1 || true	ln -sf $(CURDIR)/../../include/uapi/linux/gpio.h $@ prepare: $(OUTPUT)include/linux/gpio.h GPIO_UTILS_IN := $(OUTPUT)gpio-utils-in.o$(GPIO_UTILS_IN): prepare FORCE	$(Q)$(MAKE) $(build)=gpio-utils ## lsgpio#LSGPIO_IN := $(OUTPUT)lsgpio-in.o$(LSGPIO_IN): prepare FORCE $(OUTPUT)gpio-utils-in.o	$(Q)$(MAKE) $(build)=lsgpio$(OUTPUT)lsgpio: $(LSGPIO_IN)	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@ ## gpio-hammer#GPIO_HAMMER_IN := $(OUTPUT)gpio-hammer-in.o$(GPIO_HAMMER_IN): prepare FORCE $(OUTPUT)gpio-utils-in.o	$(Q)$(MAKE) $(build)=gpio-hammer$(OUTPUT)gpio-hammer: $(GPIO_HAMMER_IN)	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@ ## gpio-event-mon#GPIO_EVENT_MON_IN := $(OUTPUT)gpio-event-mon-in.o$(GPIO_EVENT_MON_IN): prepare FORCE $(OUTPUT)gpio-utils-in.o	$(Q)$(MAKE) $(build)=gpio-event-mon$(OUTPUT)gpio-event-mon: $(GPIO_EVENT_MON_IN)	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@ ## gpio-watch#GPIO_WATCH_IN := $(OUTPUT)gpio-watch-in.o$(GPIO_WATCH_IN): prepare FORCE	$(Q)$(MAKE) $(build)=gpio-watch$(OUTPUT)gpio-watch: $(GPIO_WATCH_IN)	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@ clean:	rm -f $(ALL_PROGRAMS)	rm -rf $(OUTPUT)include	find $(or $(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete -o -name '\.*.cmd' -delete install: $(ALL_PROGRAMS)	install -d -m 755 $(DESTDIR)$(bindir);		\	for program in $(ALL_PROGRAMS); do		\		install $$program $(DESTDIR)$(bindir);	\	done FORCE: .PHONY: all install clean FORCE prepare