tools/gpio/Makefile

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