linux-kernel - Re: [PATCH 4/4] build: Switch to new openssl API for test-libcrypto

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Date:   Tue, 9 Aug 2022 12:21:15 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Roberto Sassu <roberto.sassu@...wei.com>,
        Andres Freund <andres@...razel.de>,
        Daniel Borkmann <daniel@...earbox.net>
Cc:     quentin@...valent.com, ast@...nel.org, andrii@...nel.org,
        martin.lau@...ux.dev, song@...nel.org, john.fastabend@...il.com,
        kpsingh@...nel.org, sdf@...gle.com, peterz@...radead.org,
        mingo@...hat.com, terrelln@...com, nathan@...nel.org,
        ndesaulniers@...gle.com, bpf@...r.kernel.org,
        linux-perf-users@...r.kernel.org, llvm@...ts.linux.dev,
        linux-kernel@...r.kernel.org, Jiri Olsa <jolsa@...nel.org>
Subject: Re: [PATCH 4/4] build: Switch to new openssl API for test-libcrypto

Em Tue, Aug 09, 2022 at 12:15:25PM -0300, Arnaldo Carvalho de Melo escreveu:
> Em Mon, Aug 08, 2022 at 03:33:34PM -0300, Arnaldo Carvalho de Melo escreveu:
> > Em Mon, Aug 08, 2022 at 06:14:48PM +0200, Daniel Borkmann escreveu:
> > > Hi Arnaldo,
> > > 
> > > On 7/19/22 7:05 PM, Roberto Sassu wrote:
> > > > Switch to new EVP API for detecting libcrypto, as Fedora 36 returns an
> > > > error when it encounters the deprecated function MD5_Init() and the others.
> > > > The error would be interpreted as missing libcrypto, while in reality it is
> > > > not.
> > > > 
> > > > Signed-off-by: Roberto Sassu <roberto.sassu@...wei.com>
> > > 
> > > Given rest of the tooling fixes from Andres Freund went via perf tree and the
> > > below is perf related as well, I presume you'll pick this up, too?
> > 
> > Sure.
> >  
> > >   [0] https://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git/log/?h=perf/core
> 
> So I fixed up the first one, minor fuzzes, the second I had to fix
> conflicts with the patchset from Andres, ended up as below, will test
> build it then in my container kit.

So I backtracked, the way it works needs further consideration with
regard to the patchkit from Andres, that is already upstream, so it
would be good for Roberto to take a look at what is in torvalds/master
now and see if we have to removed that styled thing from Andres.

Andres, if you could take a look at Roberto's patchkit as well that
would be great.

- Arnaldo
 
> commit bea955a0256e20cc18e87087e42f2a903b9a8b84
> Author: Roberto Sassu <roberto.sassu@...wei.com>
> Date:   Tue Jul 19 19:05:53 2022 +0200
> 
>     bpftool: Complete libbfd feature detection
>     
>     Commit 6e8ccb4f624a7 ("tools/bpf: properly account for libbfd variations")
>     sets the linking flags depending on which flavor of the libbfd feature was
>     detected.
>     
>     However, the flavors except libbfd cannot be detected, as they are not in
>     the feature list.
>     
>     Complete the list of features to detect by adding libbfd-liberty and
>     libbfd-liberty-z.
>     
>     Committer notes:
>     
>     Adjust conflict with with:
>     
>       1e1613f64cc8a09d ("tools bpftool: Don't display disassembler-four-args feature test")
>       600b7b26c07a070d ("tools bpftool: Fix compilation error with new binutils")
>     
>     Fixes: 6e8ccb4f624a73c5 ("tools/bpf: properly account for libbfd variations")
>     Signed-off-by: Roberto Sassu <roberto.sassu@...wei.com>
>     Cc: Alexei Starovoitov <ast@...nel.org>
>     Cc: Andres Freund <andres@...razel.de>
>     Cc: Andrii Nakryiko <andrii@...nel.org>
>     Cc: bpf@...r.kernel.org
>     Cc: Daniel Borkmann <daniel@...earbox.net>
>     Cc: Ingo Molnar <mingo@...hat.com>
>     Cc: John Fastabend <john.fastabend@...il.com>
>     Cc: KP Singh <kpsingh@...nel.org>
>     Cc: llvm@...ts.linux.dev
>     Cc: Martin KaFai Lau <martin.lau@...ux.dev>
>     Cc: Nathan Chancellor <nathan@...nel.org>
>     Cc: Nick Desaulniers <ndesaulniers@...gle.com>
>     Cc: Nick Terrell <terrelln@...com>
>     Cc: Peter Zijlstra <peterz@...radead.org>
>     Cc: Quentin Monnet <quentin@...valent.com>
>     Cc: Song Liu <song@...nel.org>
>     Cc: Stanislav Fomichev <sdf@...gle.com>
>     Link: https://lore.kernel.org/r/20220719170555.2576993-2-roberto.sassu@huawei.com
>     Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
> 
> diff --git a/tools/bpf/bpftool/Makefile b/tools/bpf/bpftool/Makefile
> index 04d733e98bffbc08..9cc132277150c534 100644
> --- a/tools/bpf/bpftool/Makefile
> +++ b/tools/bpf/bpftool/Makefile
> @@ -93,9 +93,11 @@ INSTALL ?= install
>  RM ?= rm -f
>  
>  FEATURE_USER = .bpftool
> -FEATURE_TESTS = libbfd disassembler-four-args disassembler-init-styled libcap \
> +FEATURE_TESTS = libbfd libbfd-liberty libbfd-liberty-z
> +	disassembler-four-args disassembler-init-styled libcap \
>  	clang-bpf-co-re
> -FEATURE_DISPLAY = libbfd libcap clang-bpf-co-re
> +FEATURE_DISPLAY = libbfd libbfd-liberty libbfd-liberty-z
> +	libcap clang-bpf-co-re
>  
>  check_feat := 1
>  NON_CHECK_FEAT_TARGETS := clean uninstall doc doc-clean doc-install doc-uninstall

-- 

- Arnaldo