220 19287 article Path: news.gmane.org!not-for-mail From: Ville Voutilainen Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Testing for supported features: Per-feature macros? Sentinel compilation? Date: Sun, 26 Jul 2015 20:57:34 +0300 Lines: 17 Approved: news@gmane.org Message-ID: References: Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: ger.gmane.org 1437933470 13930 80.91.229.3 (26 Jul 2015 17:57:50 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 26 Jul 2015 17:57:50 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBC5JHI7A7ALRBDV72SWQKGQEM7YOOFY@isocpp.org Sun Jul 26 19:57:38 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pd0-f200.google.com ([209.85.192.200]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZJQB6-0001JY-Qq for gclcip-std-proposals@m.gmane.org; Sun, 26 Jul 2015 19:57:37 +0200 Original-Received: by pdbpo3 with SMTP id po3sf134557184pdb.1 for ; Sun, 26 Jul 2015 10:57:35 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=uCUgVHi37vFPHYgvW6KTbTLyGd2ShMUxyWYTVkD12/8=; b=OGWwPbw6L0k1HAwno7zPhypQ3kZXBjWOB3konQIHF8E+LJI/pMquffjkKvTNYDSUZM BL0stSQNh+mRed/yvNsxoXFlvu78JeCps27AQX1ilX+651QH0+V69zEPGNQsYKNbG+sr xR2tFT3cxIPciKHI4K36vXK9UvRTkq3K/prOP0ifK3tSE80cacYg04D+U5GHQbyuLLKx E6B9AAcYbtCotVgvYoHXpnqJPife8ikam/5ng0Sn20ozNSmWfPXF4FGxpw6pm7RSfsQ3 bOBvav152jscft+5aG5oprpInW0vQAw1N+Rzw5Q/3hDOOs5obTY69szxiq56zVMDg//m FQ/A== X-Gm-Message-State: ALoCoQlLh08H9eVfQqt5t3igkLBNsMU0k/LMWPuf/ew0Kc51PX8ml8+Ows9tHh9L6zo+V/gXLtsz X-Received: by 10.66.160.135 with SMTP id xk7mr26742610pab.9.1437933455236; Sun, 26 Jul 2015 10:57:35 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.107.18.228 with SMTP id 97ls1363121ios.106.gmail; Sun, 26 Jul 2015 10:57:34 -0700 (PDT) X-Received: by 10.107.27.195 with SMTP id b186mr34926085iob.140.1437933454514; Sun, 26 Jul 2015 10:57:34 -0700 (PDT) Original-Received: from mail-ig0-x229.google.com (mail-ig0-x229.google.com. [2607:f8b0:4001:c05::229]) by mx.google.com with ESMTPS id 13si13142598ioe.57.2015.07.26.10.57.34 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 26 Jul 2015 10:57:34 -0700 (PDT) Received-SPF: pass (google.com: domain of ville.voutilainen@gmail.com designates 2607:f8b0:4001:c05::229 as permitted sender) client-ip=2607:f8b0:4001:c05::229; Original-Received: by iggf3 with SMTP id f3so51789817igg.1 for ; Sun, 26 Jul 2015 10:57:34 -0700 (PDT) X-Received: by 10.107.12.194 with SMTP id 63mr34914169iom.4.1437933454414; Sun, 26 Jul 2015 10:57:34 -0700 (PDT) Original-Received: by 10.36.53.9 with HTTP; Sun, 26 Jul 2015 10:57:34 -0700 (PDT) In-Reply-To: X-Original-Sender: ville.voutilainen@gmail.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of ville.voutilainen@gmail.com designates 2607:f8b0:4001:c05::229 as permitted sender) smtp.mail=ville.voutilainen@gmail.com; dkim=pass header.i=@gmail.com; dmarc=pass (p=NONE dis=NONE) header.from=gmail.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:19287 Archived-At: On 26 July 2015 at 20:42, denis bider wrote: > A common issue in libraries with similar goals is how to detect that a > particular language feature is implemented, so as to either make use of it > or not. Currently, in most cases, this requires testing macros for specific > compiler versions. Some implementations support these: http://open-std.org/JTC1/SC22/WG21/docs/papers/2015/n4440.html -- --- 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/. .