bpftool: Skeleton should depend on libbpf

Add the dependency to libbpf, to fix build errors like: In file included from skeleton/profiler.bpf.c:5: .../bpf_helpers.h:5:10: fatal error: 'bpf_helper_defs.h' file not found #include "bpf_helper_defs.h" ^~~~~~~~~~~~~~~~~~~ 1 error generated. make: *** [skeleton/profiler.bpf.o] Error 1 make: *** Waiting for unfinished jobs.... Fixes: 47c09d6 ("bpftool: Introduce "prog profile" command") Suggested-by: Quentin Monnet <[email protected]> Signed-off-by: Song Liu <[email protected]> Signed-off-by: Daniel Borkmann <[email protected]> Reviewed-by: Quentin Monnet <[email protected]> Acked-by: John Fastabend <[email protected]> Link: https://lore.kernel.org/bpf/[email protected]
laijs · Mar 12, 2020 · 39be909 · 39be909
1 parent 14e5728
commit 39be909
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
@@ -126,11 +126,12 @@ $(OUTPUT)_prog.o: prog.c
 $(OUTPUT)_bpftool: $(_OBJS) $(LIBBPF)
 	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(_OBJS) $(LIBS)
 
-skeleton/profiler.bpf.o: skeleton/profiler.bpf.c
+skeleton/profiler.bpf.o: skeleton/profiler.bpf.c $(LIBBPF)
 	$(QUIET_CLANG)$(CLANG) \
 		-I$(srctree)/tools/include/uapi/ \
 		-I$(srctree)/tools/testing/selftests/bpf/include/uapi \
-		-I$(srctree)/tools/lib -g -O2 -target bpf -c $< -o $@
+		-I$(LIBBPF_PATH) -I$(srctree)/tools/lib \
+		-g -O2 -target bpf -c $< -o $@
 
 profiler.skel.h: $(OUTPUT)_bpftool skeleton/profiler.bpf.o
 	$(QUIET_GEN)$(OUTPUT)./_bpftool gen skeleton skeleton/profiler.bpf.o > $@