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- # SPDX-License-Identifier: GPL-2.0
- include ../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
- # builds
- ifndef building_out_of_srctree
- srctree := $(patsubst %/,%,$(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-watch
- ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
- all: $(ALL_PROGRAMS)
- export srctree OUTPUT CC LD CFLAGS
- include $(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 -f $(OUTPUT)include/linux/gpio.h
- find $(if $(OUTPUT),$(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -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
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