tools/gpio/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 include ../scripts/Makefile.include
   3
   4 bindir ?= /usr/bin
   5
   6 ifeq ($(srctree),)
   7 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
   8 srctree := $(patsubst %/,%,$(dir $(srctree)))
   9 endif
  10
  11 # Do not use make's built-in rules
  12 # (this improves performance and avoids hard-to-debug behaviour);
  13 MAKEFLAGS += -r
  14
  15 CC = $(CROSS_COMPILE)gcc
  16 LD = $(CROSS_COMPILE)ld
  17 CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include
  18
  19 ALL_TARGETS := lsgpio gpio-hammer gpio-event-mon
  20 ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
  21
  22 all: $(ALL_PROGRAMS)
  23
  24 export srctree OUTPUT CC LD CFLAGS
  25 include $(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
  34 prepare: $(OUTPUT)include/linux/gpio.h
  35
  36 #
  37 # lsgpio
  38 #
  39 LSGPIO_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 #
  48 GPIO_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 #
  57 GPIO_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
  63 clean:
  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
  68 install: $(ALL_PROGRAMS)
  69         install -d -m 755 $(DESTDIR)$(bindir);          \
  70         for program in $(ALL_PROGRAMS); do              \
  71                 install $$program $(DESTDIR)$(bindir);  \
  72         done
  73
  74 FORCE:
  75
  76 .PHONY: all install clean FORCE prepare