bpf: Rebuild bpf.o for any dependency update
This is needed to force a rebuild of bpf.o when one of its dependencies (e.g. uapi/linux/bpf.h) is updated. Add a phony target. Signed-off-by: Mickaël Salaün <mic@digikod.net> Cc: Alexei Starovoitov <ast@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: David S. Miller <davem@davemloft.net> Cc: Wang Nan <wangnan0@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1,13 +1,24 @@
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CFLAGS += -Wall -O2 -lcap -I../../../include/uapi -I../../../lib
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LIBDIR := ../../../lib
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BPFOBJ := $(LIBDIR)/bpf/bpf.o
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CFLAGS += -Wall -O2 -lcap -I../../../include/uapi -I$(LIBDIR)
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test_objs = test_verifier test_tag test_maps test_lru_map test_lpm_map
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TEST_PROGS := $(test_objs) test_kmod.sh
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TEST_FILES := $(test_objs)
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.PHONY: all clean force
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all: $(test_objs)
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$(test_objs): ../../../lib/bpf/bpf.o
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# force a rebuild of BPFOBJ when its dependencies are updated
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force:
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$(BPFOBJ): force
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$(MAKE) -C $(dir $(BPFOBJ))
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$(test_objs): $(BPFOBJ)
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include ../lib.mk
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