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From: Andrii Nakryiko <andriin@fb.com>
To: <bpf@vger.kernel.org>, <netdev@vger.kernel.org>, <ast@fb.com>,
	<daniel@iogearbox.net>
Cc: <andrii.nakryiko@gmail.com>, <kernel-team@fb.com>,
	Andrii Nakryiko <andriin@fb.com>
Subject: [PATCH bpf-next] selftests/bpf: fix dependency ordering for attach_probe test
Date: Sun, 6 Oct 2019 20:30:37 -0700	[thread overview]
Message-ID: <20191007033037.2687437-1-andriin@fb.com> (raw)

Current Makefile dependency chain is not strict enough and allows
test_attach_probe.o to be built before test_progs's
prog_test/attach_probe.o is built, which leads to assembler compainig
about missing included binary.

This patch is a minimal fix to fix this issue by enforcing that
test_attach_probe.o (BPF object file) is built before
prog_tests/attach_probe.c is attempted to be compiled.

Fixes: 928ca75e59d7 ("selftests/bpf: switch tests to new bpf_object__open_{file, mem}() APIs")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
---
 tools/testing/selftests/bpf/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 294d7472dad7..f899ed20ef4d 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -160,7 +160,8 @@ $(OUTPUT)/test_queue_map.o: test_queue_stack_map.h
 $(OUTPUT)/test_stack_map.o: test_queue_stack_map.h
 
 $(OUTPUT)/flow_dissector_load.o: flow_dissector_load.h
-$(OUTPUT)/test_progs.o: flow_dissector_load.h $(OUTPUT)/test_attach_probe.o
+prog_tests/attach_probe.c: $(OUTPUT)/test_attach_probe.o
+$(OUTPUT)/test_progs.o: flow_dissector_load.h
 
 BTF_LLC_PROBE := $(shell $(LLC) -march=bpf -mattr=help 2>&1 | grep dwarfris)
 BTF_PAHOLE_PROBE := $(shell $(BTF_PAHOLE) --help 2>&1 | grep BTF)
-- 
2.17.1


             reply	other threads:[~2019-10-07  3:30 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-07  3:30 Andrii Nakryiko [this message]
2019-10-07  5:28 ` [PATCH bpf-next] selftests/bpf: fix dependency ordering for attach_probe test Alexei Starovoitov
2019-10-07 17:36   ` Andrii Nakryiko
2019-10-07 17:01 ` Alan Maguire

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