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Date: Tue, 24 Sep 2024 20:44:15 +0100
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Subject: Re: [PATCH v1 00/11] Libdw/dwarf build clean up
To: Ian Rogers <irogers@google.com>, Peter Zijlstra <peterz@infradead.org>,
 Ingo Molnar <mingo@redhat.com>, Arnaldo Carvalho de Melo <acme@kernel.org>,
 Namhyung Kim <namhyung@kernel.org>, Mark Rutland <mark.rutland@arm.com>,
 Alexander Shishkin <alexander.shishkin@linux.intel.com>,
 Jiri Olsa <jolsa@kernel.org>, Adrian Hunter <adrian.hunter@intel.com>,
 Kan Liang <kan.liang@linux.intel.com>, John Garry <john.g.garry@oracle.com>,
 Will Deacon <will@kernel.org>, James Clark <james.clark@linaro.org>,
 Mike Leach <mike.leach@linaro.org>, Leo Yan <leo.yan@linux.dev>,
 Guo Ren <guoren@kernel.org>, Paul Walmsley <paul.walmsley@sifive.com>,
 Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou <aou@eecs.berkeley.edu>,
 Nick Terrell <terrelln@fb.com>, Guilherme Amadio <amadio@gentoo.org>,
 Changbin Du <changbin.du@huawei.com>, "Steinar H. Gunderson"
 <sesse@google.com>, "Masami Hiramatsu (Google)" <mhiramat@kernel.org>,
 Aditya Gupta <adityag@linux.ibm.com>,
 Athira Rajeev <atrajeev@linux.vnet.ibm.com>,
 Masahiro Yamada <masahiroy@kernel.org>, Huacai Chen <chenhuacai@kernel.org>,
 Bibo Mao <maobibo@loongson.cn>, Kajol Jain <kjain@linux.ibm.com>,
 Anup Patel <anup@brainfault.org>,
 Shenlin Liang <liangshenlin@eswincomputing.com>,
 Atish Patra <atishp@rivosinc.com>, Oliver Upton <oliver.upton@linux.dev>,
 Chen Pei <cp0613@linux.alibaba.com>, Dima Kogan <dima@secretsauce.net>,
 Alexander Lobakin <aleksander.lobakin@intel.com>,
 "David S. Miller" <davem@davemloft.net>,
 Przemek Kitszel <przemyslaw.kitszel@intel.com>,
 linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
 Yang Jihong <yangjihong@bytedance.com>
References: <20240924160418.1391100-1-irogers@google.com>
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From: Leo Yan <leo.yan@arm.com>
In-Reply-To: <20240924160418.1391100-1-irogers@google.com>
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On 9/24/2024 5:04 PM, Ian Rogers wrote:

> The patches remove the conditional compilation assuming the
> features are in libdw where the feature test is expanded to check
> there pressence.
> 
> In the Makefile code dwarf tends to mean unwind or libdw support for
> dwarf things. To make it clearer when dwarf really just means libdw
> numerous build variables and defines are renamed.
> 
> There is some tech debt in the changes as perf check still reports the
> values using the old name and for features that are no longer tested.

I built for Arm64 target with static and dynamic linkage, both can build
successfully in Ubuntu 24.04 and Debian bookworm. FWIW:

Tested-by: Leo Yan <leo.yan@arm.com>