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 $(srctree)))
   9 endif
  10
  11 # Do not use make's built-in rules
  12 # (this improves performance and avoids hard-to-debug behaviour);
  13 MAKEFLAGS += -r
  14
  15 override CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include
  16
  17 ALL_TARGETS := lsgpio gpio-hammer gpio-event-mon
  18 ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
  19
  20 all: $(ALL_PROGRAMS)
  21
  22 export srctree OUTPUT CC LD CFLAGS
  23 include $(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
  32 prepare: $(OUTPUT)include/linux/gpio.h
  33
  34 #
  35 # lsgpio
  36 #
  37 LSGPIO_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 #
  46 GPIO_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 #
  55 GPIO_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
  61 clean:
  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
  66 install: $(ALL_PROGRAMS)
  67         install -d -m 755 $(DESTDIR)$(bindir);          \
  68         for program in $(ALL_PROGRAMS); do              \
  69                 install $$program $(DESTDIR)$(bindir);  \
  70         done
  71
  72 FORCE:
  73
  74 .PHONY: all install clean FORCE prepare