linux-kernel - Re: [PATCH] perf build: Check whether pkg-config is installed when libtraceevent is linked

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Date: Mon, 22 Jan 2024 12:36:36 -0800
From: Namhyung Kim <namhyung@...nel.org>
To: peterz@...radead.org,
	mark.rutland@....com,
	linux-kernel@...r.kernel.org,
	mingo@...hat.com,
	linux-perf-users@...r.kernel.org,
	irogers@...gle.com,
	alexander.shishkin@...ux.intel.com,
	jolsa@...nel.org,
	Yang Jihong <yangjihong1@...wei.com>,
	adrian.hunter@...el.com,
	acme@...nel.org
Subject: Re: [PATCH] perf build: Check whether pkg-config is installed when libtraceevent is linked

On Fri, 12 Jan 2024 03:40:19 +0000, Yang Jihong wrote:
> If pkg-config is not installed when libtraceevent is linked, the build fails.
> 
> The error information is as follows:
> 
>   $ make
>   <SNIP>
>   In file included from /home/yjh/projects_linux/perf-tool-next/linux/tools/perf/util/evsel.c:43:
>   /home/yjh/projects_linux/perf-tool-next/linux/tools/perf/util/trace-event.h:149:62: error: operator '&&' has no right operand
>     149 | #if defined(LIBTRACEEVENT_VERSION) &&  LIBTRACEEVENT_VERSION >= MAKE_LIBTRACEEVENT_VERSION(1, 5, 0)
>         |                                                              ^~
>   error: command '/usr/bin/gcc' failed with exit code 1
>   cp: cannot stat 'python_ext_build/lib/perf*.so': No such file or directory
>   make[2]: *** [Makefile.perf:668: python/perf.cpython-310-x86_64-linux-gnu.so] Error 1
>   make[2]: *** Waiting for unfinished jobs....
> 
> [...]

Applied to perf-tools-next, thanks!

Thanks,
Namhyung