LXR linux/tools/gpio/Makefile

   1# SPDX-License-Identifier: GPL-2.0
   2include ../scripts/Makefile.include
   3
   4bindir ?= /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
  10ifndef building_out_of_srctree
  11srctree := $(patsubst %/,%,$(dir $(CURDIR)))
  12srctree := $(patsubst %/,%,$(dir $(srctree)))
  13endif
  14
  15# Do not use make's built-in rules
  16# (this improves performance and avoids hard-to-debug behaviour);
  17MAKEFLAGS += -r
  18
  19override CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include
  20
  21ALL_TARGETS := lsgpio gpio-hammer gpio-event-mon gpio-watch
  22ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
  23
  24all: $(ALL_PROGRAMS)
  25
  26export srctree OUTPUT CC LD CFLAGS
  27include $(srctree)/tools/build/Makefile.include
  28
  29#
  30# We need the following to be outside of kernel tree
  31#
  32$(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
  36prepare: $(OUTPUT)include/linux/gpio.h
  37
  38GPIO_UTILS_IN := $(OUTPUT)gpio-utils-in.o
  39$(GPIO_UTILS_IN): prepare FORCE
  40        $(Q)$(MAKE) $(build)=gpio-utils
  41
  42#
  43# lsgpio
  44#
  45LSGPIO_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#
  54GPIO_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#
  63GPIO_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#
  72GPIO_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
  78clean:
  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
  83install: $(ALL_PROGRAMS)
  84        install -d -m 755 $(DESTDIR)$(bindir);          \
  85        for program in $(ALL_PROGRAMS); do              \
  86                install $$program $(DESTDIR)$(bindir);  \
  87        done
  88
  89FORCE:
  90
  91.PHONY: all install clean FORCE prepare
  92