1 # SPDX-License-Identifier: GPL-2.0 2 include ../scripts/Makefile.include 3 4 bindir ?= /usr/bin 5 6 # This will work when gpio is built in tools env. where srctree 7 # isn't set and when invoked from selftests build, where srctree 8 # is set to ".". building_out_of_srctree is undefined for in srctree 9 # builds 10 ifndef building_out_of_srctree 11 srctree := $(patsubst %/,%,$(dir $(CURDIR))) 12 srctree := $(patsubst %/,%,$(dir $(srctree))) 13 endif 14 15 # Do not use make's built-in rules 16 # (this improves performance and avoids hard-to-debug behaviour); 17 MAKEFLAGS += -r 18 19 override CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include 20 21 ALL_TARGETS := lsgpio gpio-hammer gpio-event-mon gpio-watch 22 ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS)) 23 24 all: $(ALL_PROGRAMS) 25 26 export srctree OUTPUT CC LD CFLAGS 27 include $(srctree)/tools/build/Makefile.include 28 29 # 30 # We need the following to be outside of kernel tree 31 # 32 $(OUTPUT)include/linux/gpio.h: ../../include/uapi/linux/gpio.h 33 mkdir -p $(OUTPUT)include/linux 2>&1 || true 34 ln -sf $(CURDIR)/../../include/uapi/linux/gpio.h $@ 35 36 prepare: $(OUTPUT)include/linux/gpio.h 37 38 GPIO_UTILS_IN := $(OUTPUT)gpio-utils-in.o 39 $(GPIO_UTILS_IN): prepare FORCE 40 $(Q)$(MAKE) $(build)=gpio-utils 41 42 # 43 # lsgpio 44 # 45 LSGPIO_IN := $(OUTPUT)lsgpio-in.o 46 $(LSGPIO_IN): prepare FORCE $(OUTPUT)gpio-utils-in.o 47 $(Q)$(MAKE) $(build)=lsgpio 48 $(OUTPUT)lsgpio: $(LSGPIO_IN) 49 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@ 50 51 # 52 # gpio-hammer 53 # 54 GPIO_HAMMER_IN := $(OUTPUT)gpio-hammer-in.o 55 $(GPIO_HAMMER_IN): prepare FORCE $(OUTPUT)gpio-utils-in.o 56 $(Q)$(MAKE) $(build)=gpio-hammer 57 $(OUTPUT)gpio-hammer: $(GPIO_HAMMER_IN) 58 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@ 59 60 # 61 # gpio-event-mon 62 # 63 GPIO_EVENT_MON_IN := $(OUTPUT)gpio-event-mon-in.o 64 $(GPIO_EVENT_MON_IN): prepare FORCE $(OUTPUT)gpio-utils-in.o 65 $(Q)$(MAKE) $(build)=gpio-event-mon 66 $(OUTPUT)gpio-event-mon: $(GPIO_EVENT_MON_IN) 67 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@ 68 69 # 70 # gpio-watch 71 # 72 GPIO_WATCH_IN := $(OUTPUT)gpio-watch-in.o 73 $(GPIO_WATCH_IN): prepare FORCE 74 $(Q)$(MAKE) $(build)=gpio-watch 75 $(OUTPUT)gpio-watch: $(GPIO_WATCH_IN) 76 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@ 77 78 clean: 79 rm -f $(ALL_PROGRAMS) 80 rm -f $(OUTPUT)include/linux/gpio.h 81 find $(or $(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete -o -name '\.*.cmd' -delete 82 83 install: $(ALL_PROGRAMS) 84 install -d -m 755 $(DESTDIR)$(bindir); \ 85 for program in $(ALL_PROGRAMS); do \ 86 install $$program $(DESTDIR)$(bindir); \ 87 done 88 89 FORCE: 90 91 .PHONY: all install clean FORCE prepare
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