xref: /openbmc/linux/tools/gpio/Makefile (revision aeb64ff3) 
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
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
69clean:
70	rm -f $(ALL_PROGRAMS)
71	rm -f $(OUTPUT)include/linux/gpio.h
72	find $(if $(OUTPUT),$(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete
73
74install: $(ALL_PROGRAMS)
75	install -d -m 755 $(DESTDIR)$(bindir);		\
76	for program in $(ALL_PROGRAMS); do		\
77		install $$program $(DESTDIR)$(bindir);	\
78	done
79
80FORCE:
81
82.PHONY: all install clean FORCE prepare
83