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| author | Ian Rogers <irogers@google.com> | 2022-05-20 14:18:26 -0700 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-05-23 09:33:39 -0300 |
| commit | 508c9fbce0d30da3cdfe699ae5530aed82a09399 (patch) | |
| tree | ad4f1971b4dfd1585aeb2a8fea3f21553e878281 /tools/perf/Makefile.config | |
| parent | 0869331fbaa2c11c9e94e45305d17ce447189a0a (diff) | |
| download | linux-stable-508c9fbce0d30da3cdfe699ae5530aed82a09399.tar.gz linux-stable-508c9fbce0d30da3cdfe699ae5530aed82a09399.tar.bz2 linux-stable-508c9fbce0d30da3cdfe699ae5530aed82a09399.zip | |
perf build: Error for BPF skeletons without LIBBPF
LIBBPF requires LIBELF so doing "make BUILD_BPF_SKEL=1 NO_LIBELF=1"
fails with compiler errors about missing declarations. Similar could
happen if libbpf feature detection fails.
Prefer to error when BUILD_BPF_SKEL is enabled but LIBBPF isn't.
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: KP Singh <kpsingh@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Yonghong Song <yhs@fb.com>
Cc: bpf@vger.kernel.org
Cc: netdev@vger.kernel.org
Link: https://lore.kernel.org/r/20220520211826.1828180-1-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/Makefile.config')
| -rw-r--r-- | tools/perf/Makefile.config | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index c38423807d01..e0304e70f182 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -671,6 +671,9 @@ ifdef BUILD_BPF_SKEL ifeq ($(feature-clang-bpf-co-re), 0) dummy := $(error Error: clang too old/not installed. Please install recent clang to build with BUILD_BPF_SKEL) endif + ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),) + dummy := $(error Error: BPF skeleton support requires libbpf) + endif $(call detected,CONFIG_PERF_BPF_SKEL) CFLAGS += -DHAVE_BPF_SKEL endif |