linux-kernel - Re: [PATCH v3 0/3] Rewrite jevents program in python

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Date:   Tue, 14 Jun 2022 17:13:32 +0100
From:   John Garry <john.garry@...wei.com>
To:     Ian Rogers <irogers@...gle.com>
CC:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...nel.org>,
        "Namhyung Kim" <namhyung@...nel.org>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Zhengjun Xing <zhengjun.xing@...ux.intel.com>,
        "Felix Fietkau" <nbd@....name>, Qi Liu <liuqi115@...wei.com>,
        Like Xu <likexu@...cent.com>, <linux-kernel@...r.kernel.org>,
        <linux-perf-users@...r.kernel.org>,
        Nick Forrington <nick.forrington@....com>,
        Kajol Jain <kjain@...ux.ibm.com>,
        James Clark <james.clark@....com>,
        Andrew Kilroy <andrew.kilroy@....com>,
        "Paul A . Clarke" <pc@...ibm.com>, Will Deacon <will@...nel.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        <ananth.narayan@....com>, <ravi.bangoria@....com>,
        <santosh.shukla@....com>, <sandipan.das@....com>,
        Caleb Biggers <caleb.biggers@...el.com>,
        Perry Taylor <perry.taylor@...el.com>,
        Kshipra Bopardikar <kshipra.bopardikar@...el.com>,
        Stephane Eranian <eranian@...gle.com>
Subject: Re: [PATCH v3 0/3] Rewrite jevents program in python

On 14/06/2022 17:03, Ian Rogers wrote:
>> diff -u tools/perf/trace/beauty/include/linux/socket.h
>> include/linux/socket.h
>> Makefile.config:259: *** which python-config not found. Stop.
>> Makefile.perf:239: recipe for target 'sub-make' failed
>> make[1]: *** [sub-make] Error 2
>> Makefile:69: recipe for target 'all' failed
>> make: *** [all] Error 2
>> john@...ian:~/linux/tools/perf$
>>
>> JFYI, this is my alternatives:
>>
>> sudo update-alternatives --config python
>> There are 3 choices for the alternative python (providing
>> /usr/bin/python).
>>
>>     Selection    Path                     Priority  Status
>> ------------------------------------------------------------
>>     0            /usr/local/bin/python3.6   50        auto mode
>>     1            /usr/bin/python2.7         1         manual mode
>>     2            /usr/bin/python3.5         2         manual mode
>> * 3            /usr/local/bin/python3.6   50        manual mode
>>
>> Press <enter> to keep the current choice[*], or type selection number:
> Thanks Gary,
> 
> Perhaps it relates to dev packages. Perhaps, apt-get install
> python-dev-is-python3 which should resolve the symlinks. I wonder that
> you have python dev for python2 but python3 installed without the dev.
> We should be able to make a Makefile test for this.

So I was trying another system here as a sanity test (as my main dev box 
is not working either). And this other system is debian and only 
supports python up to 3.5, so that is why I have 
/usr/local/bin/python3.6 as an alt, i.e. I downloaded and built myself.

Anyway, I do have python3-dev:

john@...ian:~/linux/tools/perf$ sudo apt-get install python3-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
python3-dev is already the newest version (3.5.3-1).