tools/gpio/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 include ../scripts/Makefile.include
   3
   4 bindir ?= /usr/bin
   5
   6 # This will work when gpio is built in tools env. where srctree
   7 # isn't set and when invoked from selftests build, where srctree
   8 # is set to ".". building_out_of_srctree is undefined for in srctree
   9 # builds
  10 ifndef building_out_of_srctree
  11 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
  12 srctree := $(patsubst %/,%,$(dir $(srctree)))
  13 endif
  14
  15 # Do not use make's built-in rules
  16 # (this improves performance and avoids hard-to-debug behaviour);
  17 MAKEFLAGS += -r
  18
  19 override CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include
  20
  21 ALL_TARGETS := lsgpio gpio-hammer gpio-event-mon gpio-watch
  22 ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
  23
  24 all: $(ALL_PROGRAMS)
  25
  26 export srctree OUTPUT CC LD CFLAGS
  27 include $(srctree)/tools/build/Makefile.include
  28
  29 #
  30 # We need the following to be outside of kernel tree
  31 #
  32 $(OUTPUT)include/linux/gpio.h: ../../include/uapi/linux/gpio.h
  33         mkdir -p $(OUTPUT)include/linux 2>&1 || true
  34         ln -sf $(CURDIR)/../../include/uapi/linux/gpio.h $@
  35
  36 prepare: $(OUTPUT)include/linux/gpio.h
  37
  38 GPIO_UTILS_IN := $(OUTPUT)gpio-utils-in.o
  39 $(GPIO_UTILS_IN): prepare FORCE
  40         $(Q)$(MAKE) $(build)=gpio-utils
  41
  42 #
  43 # lsgpio
  44 #
  45 LSGPIO_IN := $(OUTPUT)lsgpio-in.o
  46 $(LSGPIO_IN): prepare FORCE $(OUTPUT)gpio-utils-in.o
  47         $(Q)$(MAKE) $(build)=lsgpio
  48 $(OUTPUT)lsgpio: $(LSGPIO_IN)
  49         $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
  50
  51 #
  52 # gpio-hammer
  53 #
  54 GPIO_HAMMER_IN := $(OUTPUT)gpio-hammer-in.o
  55 $(GPIO_HAMMER_IN): prepare FORCE $(OUTPUT)gpio-utils-in.o
  56         $(Q)$(MAKE) $(build)=gpio-hammer
  57 $(OUTPUT)gpio-hammer: $(GPIO_HAMMER_IN)
  58         $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
  59
  60 #
  61 # gpio-event-mon
  62 #
  63 GPIO_EVENT_MON_IN := $(OUTPUT)gpio-event-mon-in.o
  64 $(GPIO_EVENT_MON_IN): prepare FORCE $(OUTPUT)gpio-utils-in.o
  65         $(Q)$(MAKE) $(build)=gpio-event-mon
  66 $(OUTPUT)gpio-event-mon: $(GPIO_EVENT_MON_IN)
  67         $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
  68
  69 #
  70 # gpio-watch
  71 #
  72 GPIO_WATCH_IN := $(OUTPUT)gpio-watch-in.o
  73 $(GPIO_WATCH_IN): prepare FORCE
  74         $(Q)$(MAKE) $(build)=gpio-watch
  75 $(OUTPUT)gpio-watch: $(GPIO_WATCH_IN)
  76         $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
  77
  78 clean:
  79         rm -f $(ALL_PROGRAMS)
  80         rm -f $(OUTPUT)include/linux/gpio.h
  81         find $(if $(OUTPUT),$(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete
  82
  83 install: $(ALL_PROGRAMS)
  84         install -d -m 755 $(DESTDIR)$(bindir);          \
  85         for program in $(ALL_PROGRAMS); do              \
  86                 install $$program $(DESTDIR)$(bindir);  \
  87         done
  88
  89 FORCE:
  90
  91 .PHONY: all install clean FORCE prepare