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From: Michael Witten <mfwitten@gmail.com>
Date: Thu, 31 Mar 2011 15:29:12 -0500
Message-ID: <AANLkTi=8YiYNUj0o4=XqrRqmNjUq7zPXVEpsysJ6KbMx@mail.gmail.com>
Subject: Re: [PATCH] Use the environment variable PYTHON if defined
To: Raghavendra D Prabhu <rprabhu@wnohang.net>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
        linux-kernel@vger.kernel.org
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On Thu, Mar 31, 2011 at 14:15, Raghavendra D Prabhu <rprabhu@wnohang.net> wrote:
> Hi,
>    Regarding the point where it warns about python-devel not existing,
> it looks like that existing feature test will pass even when python3 is
> chosen and fail at a later stage. So I made this little change to feature
> test so that it fails when python3 is chosen and perf build succeeds with
> the warning printed rather than failing later.

Good point.

However, try-cc does not run the resulting program after
compiling it, so the test still succeeds.

What you want to do is make the compilation fail;
to do so, move your test here:

  #include <Python.h>

  #if PY_VERSION_HEX >= 0x03000000
    #error "Python 3 is not yet supported; set PYTHON{,_CONFIG}"

  int main(void)
  ...

P.S.
Put your replies below the email quote.
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