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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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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