220 19291 article Path: news.gmane.org!not-for-mail From: denis bider Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Testing for supported features: Per-feature macros? Sentinel compilation? Date: Sun, 26 Jul 2015 18:03:16 -0700 (PDT) Lines: 140 Approved: news@gmane.org Message-ID: References: <1720943.XpK8Tt98Hf@tjmaciei-mobl4> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_0_1499831596.1437958996961" X-Trace: ger.gmane.org 1437959015 1484 80.91.229.3 (27 Jul 2015 01:03:35 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 27 Jul 2015 01:03:35 +0000 (UTC) Cc: thiago@macieira.org To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBD5LNK7YQYJRBVUG22WQKGQEQVIQ4EI@isocpp.org Mon Jul 27 03:03:21 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-yk0-f200.google.com ([209.85.160.200]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZJWp6-0003Nc-6a for gclcip-std-proposals@m.gmane.org; Mon, 27 Jul 2015 03:03:20 +0200 Original-Received: by ykek23 with SMTP id k23sf107813430yke.2 for ; Sun, 26 Jul 2015 18:03:19 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:cc:message-id:in-reply-to :references:subject:mime-version:content-type:x-original-sender :reply-to:precedence:mailing-list:list-id:x-spam-checked-in-group :list-post:list-help:list-archive:list-subscribe:list-unsubscribe; bh=zhfR/B96cFhhCP6iMAkZuIs8OtyODY4GYGqVOhqWLSE=; b=SVYIsdcUAxnwO7MoGrwXW5GmcnpeYKal+uTGXL5gme/e3uhU+aXjsFjvCyMbRlGrTL cuDWuYMUvrFarTAvyNz1rKzNbNPryTWSNDD9uBDXTDmFvTdeEJw21gzYEfeEtjp+tHwD o+Y3rpBJEcZTveWWJp/s0hsClxUDsBSNYE2lRmZkbwc6dHXNafjZR+k0m/h8ojmYp1fF kVp4KT15VFkuLbFD3b/xkI/VXrNcGGGvNDK8yXBMbd5HBpeYWPyUoMPjDuUUfNtS1551 hB/Ppn/maAe1Uud26M/gyZQqU78fiB+0uka0SflpI6b2kJQxQUoxdS6LiQ0ZamVPWxBe 7yng== X-Gm-Message-State: ALoCoQmDyNpd1I4YiG2t3rdmqtBisOwi1PI506MPek83G0jglLl236/wUV+ZHgGqzMsUJrhhg9aM X-Received: by 10.140.165.203 with SMTP id l194mr27200648qhl.4.1437958999306; Sun, 26 Jul 2015 18:03:19 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.140.39.84 with SMTP id u78ls2623948qgu.31.gmail; Sun, 26 Jul 2015 18:03:18 -0700 (PDT) X-Received: by 10.140.101.243 with SMTP id u106mr436054qge.27.1437958998032; Sun, 26 Jul 2015 18:03:18 -0700 (PDT) In-Reply-To: <1720943.XpK8Tt98Hf@tjmaciei-mobl4> X-Original-Sender: isocppgroup@denisbider.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:19291 Archived-At: ------=_Part_0_1499831596.1437958996961 Content-Type: multipart/alternative; boundary="----=_Part_1_57966111.1437958996966" ------=_Part_1_57966111.1437958996966 Content-Type: text/plain; charset=UTF-8 Maintaining that registry, now and forever in the future, does not seem like a bureaucracy to you? It's extra work for language maintainers; it isn't general; and it doesn't provide a way to test for differences in compiler implementations. > Sentinel compilation would imply a major feature to the language. > You can already do that with a configure script, if you want, though. That opens a whole other can of worms, which sentinel compilation would make it easy to avoid. On Sunday, July 26, 2015 at 4:54:11 PM UTC-6, Thiago Macieira wrote: > On Sunday 26 July 2015 13:35:01 denis bider wrote: > > This is nice and all, but it's a *lot* of bureaucracy for a non-general > > solution that needs maintenance with every new language version; and > leaves > > out niche situations that sentinel compilation would solve (e.g. > > implementation differences between compilers that *claim* to implement > the > > same feature). > > What bureaucracy are you talking about? > > The up-to-date list is > > http://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations > > Sentinel compilation would imply a major feature to the language. You can > already do that with a configure script, if you want, though. > > -- > Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org > Software Architect - Intel Open Source Technology Center > PGP/GPG: 0x6EF45358; fingerprint: > E067 918B B660 DBD1 105C 966C 33F5 F005 6EF4 5358 > > -- --- You received this message because you are subscribed to the Google Groups "ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an email to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. Visit this group at http://groups.google.com/a/isocpp.org/group/std-proposals/. ------=_Part_1_57966111.1437958996966 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Maintaining that registry, now and forever in the fut= ure, does not seem like a bureaucracy to you?

It&#= 39;s extra work for language maintainers; it isn't general; and it does= n't provide a way to test for differences in compiler implementations.<= /div>


> Sentinel compilation would imp= ly a major feature to the language.
> You can already do that = with a configure script, if you want, though.

Tha= t opens a whole other can of worms, which sentinel compilation would make i= t easy to avoid.


On Sunday, July 26, 2015 at 4:54:11 PM UTC-6, T= hiago Macieira wrote:
On Sunday 26 July 2= 015 13:35:01 denis bider wrote:
> This is nice and all, but it's a *lot* of bureaucracy for a no= n-general=20
> solution that needs maintenance with every new language version; a= nd leaves=20
> out niche situations that sentinel compilation would solve (e.g.
> implementation differences between compilers that *claim* to imple= ment the=20
> same feature).

What bureaucracy are you talking about?

The up-to-date list is=20
http://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommenda= tions

Sentinel compilation would imply a major feature to the language. You c= an=20
already do that with a configure script, if you want, though.

--=20
Thiago Macieira - thiago (AT) macieira= ..info - thiago (AT) kde.org
=C2=A0 =C2=A0Software Architect - Intel Open Source Technology Center
=C2=A0 =C2=A0 =C2=A0 PGP/GPG: 0x6EF45358; fingerprint:
=C2=A0 =C2=A0 =C2=A0 E067 918B B660 DBD1 105C =C2=A0966C 33F5 F005 6EF4= 5358

--

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To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposa= ls+unsubscribe@isocpp.org.
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