Merge tag 'gpio-v4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux...

[cascardo/linux.git] / tools / gpio / Makefile

diff --git a/tools/gpio/Makefile b/tools/gpio/Makefile
index c155d6b..250a891 100644 (file)
--- a/tools/gpio/Makefile
+++ b/tools/gpio/Makefile
@@ -1,12 +1,75 @@
+include ../scripts/Makefile.include
+
+bindir ?= /usr/bin
+
+ifeq ($(srctree),)
+srctree := $(patsubst %/,%,$(dir $(shell pwd)))
+srctree := $(patsubst %/,%,$(dir $(srctree)))
+endif
+
+# Do not use make's built-in rules
+# (this improves performance and avoids hard-to-debug behaviour);
+MAKEFLAGS += -r
+
 CC = $(CROSS_COMPILE)gcc
-CFLAGS += -O2 -Wall -g -D_GNU_SOURCE
+LD = $(CROSS_COMPILE)ld
+CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include
+
+ALL_TARGETS := lsgpio gpio-hammer gpio-event-mon
+ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
+
+all: $(ALL_PROGRAMS)
 
-all: lsgpio
+export srctree OUTPUT CC LD CFLAGS
+include $(srctree)/tools/build/Makefile.include
 
-lsgpio: lsgpio.o gpio-utils.o
+#
+# We need the following to be outside of kernel tree
+#
+$(OUTPUT)include/linux/gpio.h: ../../include/uapi/linux/gpio.h
+       mkdir -p $(OUTPUT)include/linux 2>&1 || true
+       ln -sf $(CURDIR)/../../include/uapi/linux/gpio.h $@
 
-%.o: %.c gpio-utils.h
+prepare: $(OUTPUT)include/linux/gpio.h
+
+#
+# lsgpio
+#
+LSGPIO_IN := $(OUTPUT)lsgpio-in.o
+$(LSGPIO_IN): prepare FORCE
+       $(Q)$(MAKE) $(build)=lsgpio
+$(OUTPUT)lsgpio: $(LSGPIO_IN)
+       $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
+
+#
+# gpio-hammer
+#
+GPIO_HAMMER_IN := $(OUTPUT)gpio-hammer-in.o
+$(GPIO_HAMMER_IN): prepare FORCE
+       $(Q)$(MAKE) $(build)=gpio-hammer
+$(OUTPUT)gpio-hammer: $(GPIO_HAMMER_IN)
+       $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
+
+#
+# gpio-event-mon
+#
+GPIO_EVENT_MON_IN := $(OUTPUT)gpio-event-mon-in.o
+$(GPIO_EVENT_MON_IN): prepare FORCE
+       $(Q)$(MAKE) $(build)=gpio-event-mon
+$(OUTPUT)gpio-event-mon: $(GPIO_EVENT_MON_IN)
+       $(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
 
-.PHONY: clean
 clean:
-       rm -f *.o lsgpio
+       rm -f $(ALL_PROGRAMS)
+       rm -f $(OUTPUT)include/linux/gpio.h
+       find $(if $(OUTPUT),$(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete
+
+install: $(ALL_PROGRAMS)
+       install -d -m 755 $(DESTDIR)$(bindir);          \
+       for program in $(ALL_PROGRAMS); do              \
+               install $$program $(DESTDIR)$(bindir);  \
+       done
+
+FORCE:
+
+.PHONY: all install clean FORCE prepare