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