1 # SPDX-License-Identifier: GPL-2.0
2 include ..
/scripts
/Makefile.
include
7 srctree
:= $(patsubst %/,%,$(dir $(CURDIR
)))
8 srctree
:= $(patsubst %/,%,$(dir $(srctree
)))
11 # Do not use make's built-in rules
12 # (this improves performance and avoids hard-to-debug behaviour);
15 override CFLAGS
+= -O2
-Wall
-g
-D_GNU_SOURCE
-I
$(OUTPUT
)include
17 ALL_TARGETS
:= counter_example
18 ALL_PROGRAMS
:= $(patsubst %,$(OUTPUT
)%,$(ALL_TARGETS
))
22 export srctree OUTPUT CC LD CFLAGS
23 include $(srctree
)/tools
/build
/Makefile.
include
26 # We need the following to be outside of kernel tree
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
$@
32 prepare
: $(OUTPUT
)include/linux
/counter.h
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
$@
42 rm -rf
$(OUTPUT
)include/linux
/counter.h
43 rmdir
-p
$(OUTPUT
)include/linux
44 find
$(or
$(OUTPUT
),.
) -name
'*.o' -delete
-o
-name
'\.*.d' -delete
46 install: $(ALL_PROGRAMS
)
47 install -d
-m
755 $(DESTDIR
)$(bindir); \
48 for program in
$(ALL_PROGRAMS
); do \
49 install $$program $(DESTDIR
)$(bindir); \
54 .PHONY
: all install clean FORCE prepare