xref: /openbmc/linux/tools/gpio/Makefile (revision 4f2c0a4acffbec01079c28f839422e64ddeff004)
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 $(or $(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
92