xref: /openbmc/linux/tools/gpio/Makefile (revision a44e4f3a) 
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
38#
39# lsgpio
40#
41LSGPIO_IN := $(OUTPUT)lsgpio-in.o
42$(LSGPIO_IN): prepare FORCE
43	$(Q)$(MAKE) $(build)=lsgpio
44$(OUTPUT)lsgpio: $(LSGPIO_IN)
45	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
46
47#
48# gpio-hammer
49#
50GPIO_HAMMER_IN := $(OUTPUT)gpio-hammer-in.o
51$(GPIO_HAMMER_IN): prepare FORCE
52	$(Q)$(MAKE) $(build)=gpio-hammer
53$(OUTPUT)gpio-hammer: $(GPIO_HAMMER_IN)
54	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
55
56#
57# gpio-event-mon
58#
59GPIO_EVENT_MON_IN := $(OUTPUT)gpio-event-mon-in.o
60$(GPIO_EVENT_MON_IN): prepare FORCE
61	$(Q)$(MAKE) $(build)=gpio-event-mon
62$(OUTPUT)gpio-event-mon: $(GPIO_EVENT_MON_IN)
63	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
64
65clean:
66	rm -f $(ALL_PROGRAMS)
67	rm -f $(OUTPUT)include/linux/gpio.h
68	find $(if $(OUTPUT),$(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete
69
70install: $(ALL_PROGRAMS)
71	install -d -m 755 $(DESTDIR)$(bindir);		\
72	for program in $(ALL_PROGRAMS); do		\
73		install $$program $(DESTDIR)$(bindir);	\
74	done
75
76FORCE:
77
78.PHONY: all install clean FORCE prepare
79