From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-out-no.shaw.ca (smtp-out-no.shaw.ca [64.59.134.9]) by sourceware.org (Postfix) with ESMTPS id CCBDD3851C39 for ; Thu, 19 Nov 2020 15:27:48 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org CCBDD3851C39 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=SystematicSw.ab.ca Authentication-Results: sourceware.org; spf=none smtp.mailfrom=brian.inglis@systematicsw.ab.ca Received: from [192.168.1.104] ([24.64.172.44]) by shaw.ca with ESMTP id flqckv3rUtdldflqdktrYb; Thu, 19 Nov 2020 08:27:48 -0700 X-Authority-Analysis: v=2.4 cv=INe8tijG c=1 sm=1 tr=0 ts=5fb68ef4 a=kiZT5GMN3KAWqtYcXc+/4Q==:117 a=kiZT5GMN3KAWqtYcXc+/4Q==:17 a=IkcTkHD0fZMA:10 a=w_pzkKWiAAAA:8 a=uZvujYp8AAAA:8 a=uYT-Tk0qkVT609LjNaIA:9 a=QEXdDO2ut3YA:10 a=Lz48L_9qCwoA:10 a=sRI3_1zDfAgwuvI8zelB:22 a=SLzB8X_8jTLwj6mN0q5r:22 Reply-To: cygwin@cygwin.com To: cygwin@cygwin.com References: <000a01d6be5b$3808cad0$a81a6070$@gmail.com> From: Brian Inglis Organization: Systematic Software Subject: Re: Sv: g++ and c++17 filesystem Message-ID: <15d2b3e5-cbb8-0008-e99a-3922ff4a5f3b@SystematicSw.ab.ca> Date: Thu, 19 Nov 2020 08:27:46 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.4.3 MIME-Version: 1.0 In-Reply-To: <000a01d6be5b$3808cad0$a81a6070$@gmail.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-CA Content-Transfer-Encoding: 8bit X-CMAE-Envelope: MS4xfB+4ekxwhijlnKaNDM1lm/Ei05wLy1cYUZPUbtEbvWsWq8yNxWfYQXljLC3vij2Rj0bRvxTJsJ8Doh7DkjjvX/bDUlnW3Prd/S+yiBbtQwODSx/g5IzR Z3y1FvzH/C1mG8u70KDQx+Y45RdhDA0p0tMbFfaj1HiALqNoea6I3nNwMZySijMkVq26rmhf3wfGFKATdF9V1ROn6EKM1DZUGdY= X-Spam-Status: No, score=-6.1 required=5.0 tests=BAYES_00, KAM_DMARC_STATUS, KAM_LAZY_DOMAIN_SECURITY, NICE_REPLY_A, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=no autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 19 Nov 2020 15:27:50 -0000 On 2020-11-19 03:03, Kristian Ivarsson via Cygwin wrote: >>> 18 nov. 2020 kl. 17:26 skrev René Berber via Cygwin : >>> On 11/18/2020 3:00 AM, Kristian Ivarsson via Cygwin wrote: >>>>>> On 11/17/2020 9:15 AM, Kristian Ivarsson via Cygwin wrote: >>>>>> The filesystem-library as a part of C++17 seems to have some >>>>>> defects and flaws in the cygwin-package and pretty much every >>>>>> lexical- and canonical operation works in mysterious ways (or not >>>>>> at all) >>>>> https://cygwin.com/cygwin-ug-net/using.html#pathnames-win32 >> As stated earlier, it seems like using mingw g++/libstdc++ (from the >> cygwin-package-manager) it seems like it works better, but then you can’t >> mix with other posix/cygwin mechanism (that uses cygstdc++) without >> breaking ODR (and probably some memory models etc as well) so maybe >> someone do have some insightful info about this ? How “special” is >> cygstdc++ (compared to mingw:s libstdc++) ? Could this be fixable in that >> library (cygstdc++) ? > I might be totally wrong, so does anyone have any take on this ? Cygwin provides cross-tools like djgpp-gcc-core mingw64-i686-gcc-core, mingw64-x86_64-gcc-core, cygwin32-gcc-core, cygwin64-gcc-core, and djgpp-binutils, mingw64-i686-binutils, mingw64-x86_64-binutils, cygwin32-binutils, cygwin64-binutils so anyone has the freedom to choose to build DOS, Windows, or Cygwin apps targeting their respective APIs, under Cygwin, and also have the freedom to give away or sell those apps as long as they respect their licences. Cygwin's goal is to have everyone and everything believe it is running in a POSIX environment and provide interoperability within a Windows environment (including Wine) based on POSIX standards, system interfaces, toolchains, shells, utilities: https://pubs.opengroup.org/onlinepubs/9699919799/ system and network servers and services, plus GUI desktops (GNOME, KDE, LXDE, MATE, Plasma, Xfce desktops on X Window System), and apps (task and file managers, web browsers, PDF viewers and editors, graphics viewers and editors including GIMP). This is all ported and supported by volunteers who believe everyone should have a choice, even when for business or family reasons they use Windows. -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised. [Data in binary units and prefixes, physical quantities in SI.]