[PATCH bpf-next 01/16] selftests/bpf: BPF object files should depend only on libbpf headers

[Andrii Nakryiko]

There is no need to re-build BPF object files if any of the sources of libbpf
change. So record more precise dependency only on libbpf/bpf_*.h headers. This
eliminates unnecessary re-builds.

Signed-off-by: Andrii Nakryiko <andr...@fb.com>
---
 tools/testing/selftests/bpf/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/Makefile 
b/tools/testing/selftests/bpf/Makefile
index a83b5827532f..09657d0afb5c 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -316,7 +316,7 @@ $(TRUNNER_BPF_OBJS): $(TRUNNER_OUTPUT)/%.o:                 
        \
                     $(TRUNNER_BPF_PROGS_DIR)/%.c                       \
                     $(TRUNNER_BPF_PROGS_DIR)/*.h                       \
                     $$(INCLUDE_DIR)/vmlinux.h                          \
-                    $$(BPFOBJ) | $(TRUNNER_OUTPUT)
+                    $(wildcard $(BPFDIR)/bpf_*.h) | $(TRUNNER_OUTPUT)
        $$(call $(TRUNNER_BPF_BUILD_RULE),$$<,$$@,                      \
                                          $(TRUNNER_BPF_CFLAGS),        \
                                          $(TRUNNER_BPF_LDFLAGS))
-- 
2.24.1