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