tools/counter/Makefile

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