1# SPDX-License-Identifier: GPL-2.0
2include ../scripts/Makefile.include
3
4bindir ?= /usr/bin
5
6ifeq ($(srctree),)
7srctree := $(patsubst %/,%,$(dir $(CURDIR)))
8srctree := $(patsubst %/,%,$(dir $(srctree)))
9endif
10
11# Do not use make's built-in rules
12# (this improves performance and avoids hard-to-debug behaviour);
13MAKEFLAGS += -r
14
15override CFLAGS += -O2 -Wall -g -D_GNU_SOURCE -I$(OUTPUT)include \
16	 -I$(srctree)/tools/include
17
18ALL_TARGETS := counter_example counter_watch_events
19ALL_PROGRAMS := $(patsubst %,$(OUTPUT)%,$(ALL_TARGETS))
20
21all: $(ALL_PROGRAMS)
22
23export srctree OUTPUT CC LD CFLAGS
24include $(srctree)/tools/build/Makefile.include
25
26#
27# We need the following to be outside of kernel tree
28#
29$(OUTPUT)include/linux/counter.h: ../../include/uapi/linux/counter.h
30	mkdir -p $(OUTPUT)include/linux 2>&1 || true
31	ln -sf $(CURDIR)/../../include/uapi/linux/counter.h $@
32
33prepare: $(OUTPUT)include/linux/counter.h
34
35COUNTER_EXAMPLE := $(OUTPUT)counter_example.o
36$(COUNTER_EXAMPLE): prepare FORCE
37	$(Q)$(MAKE) $(build)=counter_example
38$(OUTPUT)counter_example: $(COUNTER_EXAMPLE)
39	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
40
41COUNTER_WATCH_EVENTS := $(OUTPUT)counter_watch_events.o
42$(COUNTER_WATCH_EVENTS): prepare FORCE
43	$(Q)$(MAKE) $(build)=counter_watch_events
44$(OUTPUT)counter_watch_events: $(COUNTER_WATCH_EVENTS)
45	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $< -o $@
46
47clean:
48	rm -f $(ALL_PROGRAMS)
49	rm -rf $(OUTPUT)include/linux/counter.h
50	rm -df $(OUTPUT)include/linux
51	rm -df $(OUTPUT)include
52	find $(or $(OUTPUT),.) -name '*.o' -delete -o -name '\.*.d' -delete
53	find $(or $(OUTPUT),.) -name '\.*.o.cmd' -delete
54
55install: $(ALL_PROGRAMS)
56	install -d -m 755 $(DESTDIR)$(bindir);		\
57	for program in $(ALL_PROGRAMS); do		\
58		install $$program $(DESTDIR)$(bindir);	\
59	done
60
61FORCE:
62
63.PHONY: all install clean FORCE prepare
64