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 15CC = $(CROSS_COMPILE)gcc 16LD = $(CROSS_COMPILE)ld 17CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include 18 19ALL_TARGETS := lsgpio gpio-hammer gpio-event-mon 20ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS)) 21 22all: $(ALL_PROGRAMS) 23 24export srctree OUTPUT CC LD CFLAGS 25include $(srctree)/tools/build/Makefile.include 26 27# 28# We need the following to be outside of kernel tree 29# 30$(OUTPUT)include/linux/gpio.h: ../../include/uapi/linux/gpio.h 31 mkdir -p $(OUTPUT)include/linux 2>&1 || true 32 ln -sf $(CURDIR)/../../include/uapi/linux/gpio.h $@ 33 34prepare: $(OUTPUT)include/linux/gpio.h 35 36# 37# lsgpio 38# 39LSGPIO_IN := $(OUTPUT)lsgpio-in.o 40$(LSGPIO_IN): prepare FORCE 41 $(Q)$(MAKE) $(build)=lsgpio 42$(OUTPUT)lsgpio: $(LSGPIO_IN) 43 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@ 44 45# 46# gpio-hammer 47# 48GPIO_HAMMER_IN := $(OUTPUT)gpio-hammer-in.o 49$(GPIO_HAMMER_IN): prepare FORCE 50 $(Q)$(MAKE) $(build)=gpio-hammer 51$(OUTPUT)gpio-hammer: $(GPIO_HAMMER_IN) 52 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@ 53 54# 55# gpio-event-mon 56# 57GPIO_EVENT_MON_IN := $(OUTPUT)gpio-event-mon-in.o 58$(GPIO_EVENT_MON_IN): prepare FORCE 59 $(Q)$(MAKE) $(build)=gpio-event-mon 60$(OUTPUT)gpio-event-mon: $(GPIO_EVENT_MON_IN) 61 $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@ 62 63clean: 64 rm -f $(ALL_PROGRAMS) 65 rm -f $(OUTPUT)include/linux/gpio.h 66 find $(if $(OUTPUT),$(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete 67 68install: $(ALL_PROGRAMS) 69 install -d -m 755 $(DESTDIR)$(bindir); \ 70 for program in $(ALL_PROGRAMS); do \ 71 install $$program $(DESTDIR)$(bindir); \ 72 done 73 74FORCE: 75 76.PHONY: all install clean FORCE prepare 77