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author | Zixuan Tan <tanzixuangg@gmail.com> | 2022-06-25 23:34:38 +0800 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-08-02 16:32:28 -0300 |
commit | 10fef869a58e37ec649b61eddab545f2da57a79b (patch) | |
tree | cb7b695d4af9754c0f221dc8cd4899c28a7144bf /tools/build | |
parent | 9b7c7728f4e4ba8dd75269fb111fa187faa018c6 (diff) | |
download | linux-10fef869a58e37ec649b61eddab545f2da57a79b.tar.gz |
perf build: Suppress openssl v3 deprecation warnings in libcrypto feature test
With OpenSSL v3 installed, the libcrypto feature check fails as it use the deprecated MD5_* API (and is compiled with -Werror). The error message is as follows. $ make tools/perf ``` Makefile.config:778: No libcrypto.h found, disables jitted code injection, please install openssl-devel or libssl-dev Auto-detecting system features: ... dwarf: [ on ] ... dwarf_getlocations: [ on ] ... glibc: [ on ] ... libbfd: [ on ] ... libbfd-buildid: [ on ] ... libcap: [ on ] ... libelf: [ on ] ... libnuma: [ on ] ... numa_num_possible_cpus: [ on ] ... libperl: [ on ] ... libpython: [ on ] ... libcrypto: [ OFF ] ... libunwind: [ on ] ... libdw-dwarf-unwind: [ on ] ... zlib: [ on ] ... lzma: [ on ] ... get_cpuid: [ on ] ... bpf: [ on ] ... libaio: [ on ] ... libzstd: [ on ] ... disassembler-four-args: [ on ] ``` This is very confusing because the suggested library (on my Ubuntu 20.04 it is libssl-dev) is already installed. As the test only checks for the presence of libcrypto, this commit suppresses the deprecation warning to allow the test to pass. Signed-off-by: Zixuan Tan <tanzixuan.me@gmail.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: John Fastabend <john.fastabend@gmail.com> Cc: KP Singh <kpsingh@kernel.org> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Nick Terrell <terrelln@fb.com> 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/20220625153439.513559-1-tanzixuan.me@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/build')
-rw-r--r-- | tools/build/feature/test-libcrypto.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/tools/build/feature/test-libcrypto.c b/tools/build/feature/test-libcrypto.c index a98174e0569c..31afff093d0b 100644 --- a/tools/build/feature/test-libcrypto.c +++ b/tools/build/feature/test-libcrypto.c @@ -2,6 +2,12 @@ #include <openssl/sha.h> #include <openssl/md5.h> +/* + * The MD5_* API have been deprecated since OpenSSL 3.0, which causes the + * feature test to fail silently. This is a workaround. + */ +#pragma GCC diagnostic ignored "-Wdeprecated-declarations" + int main(void) { MD5_CTX context; |