From: <sten.kristian.ivarsson@gmail.com>
To: <cygwin@cygwin.com>
Subject: Sv: Sv: g++ and c++17 filesystem
Date: Fri, 20 Nov 2020 10:37:51 +0100 [thread overview]
Message-ID: <000801d6bf20$d0ce0670$726a1350$@gmail.com> (raw)
In-Reply-To: <15d2b3e5-cbb8-0008-e99a-3922ff4a5f3b@SystematicSw.ab.ca>
[snip]
> >> 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
> >> cygstdc++ 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.
Tnx Brian
I think The Cygwin-community is doing a great job but with some caveats, such as this
We're in need of various posix-libraries and I guess they won't be available if using the mingw-g++/libstdc++ (I guess cygstdc++ is needed then due to some special memory models etc etc etc) ?
I can for sure try it out, but that would be quite cumbersome because the and I guess it'll be a whole lot of hazzle to make it working
I'd rather help out or having a dialog of how to fix std::filesystem, i.e. change the usage of the __CYGWIN__ macro in that implementation, but this seems to be a part of the "real" GCC-distribution o I guess I need to be involved in that open-source-community instead, but I guess it somehow is invoked from this project somehow so I guess some people here do have some real insights about this ?
The whole C/C++ community is striving for total cross-platform libraries (but I guess we have a few years left for that) and std::filesystem was supposed to take us all in that direction and I totally understand that std::filesystem-library in Cygwin do think it is on a posix-filesystem (though it's not) and I totally understand why the behaviour is as it is, but I don't agree that is a good thing, considering that the underlaying posix-implementation already today accepts Windows:ish-like-paths in some circumstances, I'd like the whole package to be even more agnostic because most applications don't have any wish to inspect the content of a path-object no more than the value of a socket-descriptor
Applications might wanna extract type, name, parent-folder, etc but do rarely care about what kind of separator it has (/ or \) and the style of the root directory etc and it would be very neat if the cygwin std::filesystem-library became more agnostic in these regards
Best regards,
Kristian
> --
> Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada
>
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next prev parent reply other threads:[~2020-11-20 9:37 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-17 15:15 sten.kristian.ivarsson
2020-11-17 16:45 ` René Berber
2020-11-18 9:00 ` Sv: " sten.kristian.ivarsson
2020-11-18 16:24 ` René Berber
2020-11-18 16:31 ` Eliot Moss
2020-11-18 20:46 ` Kristian Ivarsson
2020-11-18 20:56 ` Eliot Moss
2020-11-18 21:18 ` Kristian Ivarsson
2020-11-18 23:47 ` Eliot Moss
2020-11-19 8:10 ` Sv: " sten.kristian.ivarsson
2020-11-18 21:45 ` Norton Allen
2020-11-19 0:08 ` Doug Henderson
2020-11-19 6:23 ` Brian Inglis
2020-11-19 10:03 ` Sv: " sten.kristian.ivarsson
2020-11-19 15:27 ` Brian Inglis
2020-11-20 9:37 ` sten.kristian.ivarsson [this message]
2020-11-20 15:29 ` Sv: " Brian Inglis
2020-11-20 16:11 ` Sv: " sten.kristian.ivarsson
2020-11-19 15:36 ` Eliot Moss
2020-11-20 8:31 ` Sv: " sten.kristian.ivarsson
2020-11-20 18:28 ` Jonathan Yong
[not found] ` <000601d6c173$aa55d540$ff017fc0$@gmail.com>
2020-11-23 11:09 ` Sv: " Jonathan Yong
2020-11-24 9:32 ` Sv: " sten.kristian.ivarsson
2020-11-24 10:24 ` Jonathan Yong
2020-11-24 11:35 ` Sv: " sten.kristian.ivarsson
2020-11-24 12:33 ` Jonathan Yong
2020-11-24 14:01 ` Sv: " sten.kristian.ivarsson
2020-11-25 2:25 ` Jonathan Yong
2020-11-24 13:22 ` Eliot Moss
2020-11-24 14:31 ` Sv: " sten.kristian.ivarsson
2020-11-24 20:06 ` Ken Brown
2020-11-24 20:39 ` Eliot Moss
2020-11-25 8:02 ` Sv: " sten.kristian.ivarsson
2020-11-25 8:30 ` sten.kristian.ivarsson
2020-11-25 0:23 ` Brian Inglis
2020-11-25 9:00 ` Sv: " sten.kristian.ivarsson
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