Hello!
I want to port my D application to Windows using CygWin. Is it possible? How?

On Monday, 14 November 2016 at 12:24:17 UTC, unDEFER wrote:
> Hello!
> I want to port my D application to Windows using CygWin. Is it possible? How?

It is. I'd recommend MinGW, though. Else you will have to ship the cygwin.dll. However, you can compile your D app directly on windows with dmd/dub, depending on the app. What kinda application is it?

On Monday, 14 November 2016 at 12:36:53 UTC, Chris wrote:
> It is. I'd recommend MinGW, though. Else you will have to ship the cygwin.dll. However, you can compile your D app directly on windows with dmd/dub, depending on the app. What kinda application is it?

I still think how to better port my application. The goal of the project is rewrite existing program environment entirely. But for beginning it will very original file manager and text/image viewer. The screenshot:
https://drive.google.com/open?id=0ByWS85CFyRGwd3ZJd3RrQ01razA

It is my "/". You can see "bin" with many files, "etc" with many other directories and files, and the most interesting - "proc" with many directories with the same structure.

So the problem is that I'm using rsync to copy. And rsync ported to windows only with cygwin. And I think: make some rsync replacement for windows with reduced functionality or use cygwin for my program fully.

Strange that all I can find on "cygwin.h" request is http://www.privoxy.org/dox/cygwin_8h-source.html
So I still don't understand what means "ship cygwin.dll".

Hello, again!
I'm long have thought and have decided to try to do the next thing:
I'm trying to list "/" of cygwin environment with the next code:

===============================
import std.stdio;
import cygwin.std.file;

void main()
{
        foreach (string name; dirEntries("/", SpanMode.shallow))
        {
                writefln(name);
        }
}
===============================

Where cygwin.std.file is std.file copied to cygwin directory with replacement "version (Windows)" to "version (WindowsNotWindows)", "version (Posix)"/"version(linux)"/"version(CRuntime_Glibc)" to "version (Windows)". Also I have copied all dependencies core.sys.posix to cygwin directory with the same replacement.

I think that cygwin defines all posix functions, so the Posix code of D must works under Windows with cygwin libraries.
But now I have the next linker error:

===============================
$ dmd try.d
OPTLINK (R) for Win32  Release 8.00.17
Copyright (C) Digital Mars 1989-2013  All rights reserved.
http://www.digitalmars.com/ctg/optlink.html
try.obj(try)
 Error 42: Symbol Undefined _D6cygwin3std4file10dirEntriesFAyaE6cygwin3std4file8SpanModebZS6cygwin3std4file11DirIterator
try.obj(try)
 Error 42: Symbol Undefined _D6cygwin3std4file8DirEntry4nameMxFNaNbNdZAya
try.obj(try)
 Error 42: Symbol Undefined _D6cygwin3std4file11DirIterator8popFrontMFZv
try.obj(try)
 Error 42: Symbol Undefined _D6cygwin3std4file11DirIterator5emptyMFNdZb
try.obj(try)
 Error 42: Symbol Undefined _D6cygwin3std4file11DirIterator5frontMFNdZS6cygwin3std4file8DirEntry
try.obj(try)
 Error 42: Symbol Undefined _D6cygwin3std4file11DirIterator11__fieldDtorMFZv
try.obj(try)
 Error 42: Symbol Undefined _D6cygwin3std4file12__ModuleInfoZ
Error: linker exited with status 177865064
===============================

And looks like these functions is not POSIX functions which I can find in cygwin-libraries. Any ideas?
How to correctly use CygWin under D?

On 18/11/2016 10:33 PM, unDEFER wrote:
> Hello, again!
> I'm long have thought and have decided to try to do the next thing:
> I'm trying to list "/" of cygwin environment with the next code:
>
> ===============================
> import std.stdio;
> import cygwin.std.file;
>
> void main()
> {
>         foreach (string name; dirEntries("/", SpanMode.shallow))
>         {
>                 writefln(name);
>         }
> }
> ===============================
>
> Where cygwin.std.file is std.file copied to cygwin directory with
> replacement "version (Windows)" to "version (WindowsNotWindows)",
> "version (Posix)"/"version(linux)"/"version(CRuntime_Glibc)" to "version
> (Windows)". Also I have copied all dependencies core.sys.posix to cygwin
> directory with the same replacement.
>
> I think that cygwin defines all posix functions, so the Posix code of D
> must works under Windows with cygwin libraries.
> But now I have the next linker error:
>
> ===============================
> $ dmd try.d
> OPTLINK (R) for Win32  Release 8.00.17
> Copyright (C) Digital Mars 1989-2013  All rights reserved.
> http://www.digitalmars.com/ctg/optlink.html
> try.obj(try)
>  Error 42: Symbol Undefined
> _D6cygwin3std4file10dirEntriesFAyaE6cygwin3std4file8SpanModebZS6cygwin3std4file11DirIterator
>
> try.obj(try)
>  Error 42: Symbol Undefined _D6cygwin3std4file8DirEntry4nameMxFNaNbNdZAya
> try.obj(try)
>  Error 42: Symbol Undefined _D6cygwin3std4file11DirIterator8popFrontMFZv
> try.obj(try)
>  Error 42: Symbol Undefined _D6cygwin3std4file11DirIterator5emptyMFNdZb
> try.obj(try)
>  Error 42: Symbol Undefined
> _D6cygwin3std4file11DirIterator5frontMFNdZS6cygwin3std4file8DirEntry
> try.obj(try)
>  Error 42: Symbol Undefined
> _D6cygwin3std4file11DirIterator11__fieldDtorMFZv
> try.obj(try)
>  Error 42: Symbol Undefined _D6cygwin3std4file12__ModuleInfoZ
> Error: linker exited with status 177865064
> ===============================
>
> And looks like these functions is not POSIX functions which I can find
> in cygwin-libraries. Any ideas?
> How to correctly use CygWin under D?

Perhaps you should treat it as a port to a new platform.
So start with getting druntime going (which means recompiling it).

On Friday, 18 November 2016 at 09:40:25 UTC, rikki cattermole wrote:
> Perhaps you should treat it as a port to a new platform.
> So start with getting druntime going (which means recompiling it).

No, no recompile. The idea is very simple:
1. The cygwin provides libraries
2. I can rewrite dirEntries() using functions from cygwin. The posibility is provided by D language and not by runtime.
3. Profit

What I'm understand wrong? Why simple using of cygwin-libraries can require druntime recompile?

On Friday, 18 November 2016 at 09:33:58 UTC, unDEFER wrote:
> ===============================
> $ dmd try.d
> OPTLINK (R) for Win32  Release 8.00.17
> Copyright (C) Digital Mars 1989-2013  All rights reserved.
> http://www.digitalmars.com/ctg/optlink.html
> try.obj(try)
>  Error 42: Symbol Undefined _D6cygwin3std4file10dirEntriesFAyaE6cygwin3std4file8SpanModebZS6cygwin3std4file11DirIterator
> try.obj(try)
>  Error 42: Symbol Undefined _D6cygwin3std4file8DirEntry4nameMxFNaNbNdZAya
> try.obj(try)
>  Error 42: Symbol Undefined _D6cygwin3std4file11DirIterator8popFrontMFZv
> try.obj(try)
>  Error 42: Symbol Undefined _D6cygwin3std4file11DirIterator5emptyMFNdZb
> try.obj(try)
>  Error 42: Symbol Undefined _D6cygwin3std4file11DirIterator5frontMFNdZS6cygwin3std4file8DirEntry
> try.obj(try)
>  Error 42: Symbol Undefined _D6cygwin3std4file11DirIterator11__fieldDtorMFZv
> try.obj(try)
>  Error 42: Symbol Undefined _D6cygwin3std4file12__ModuleInfoZ
> Error: linker exited with status 177865064
> ===============================

Who can explain these symbols?
_D6cygwin3std4file10dirEntriesFAyaE6cygwin3std4file8SpanModebZS6cygwin3std4file11DirIterator
dirEntries, SpanMode, DirIterator. dirEntries is function and defined in the code, SpanMode is enum and defined in the code, DirIterator is struct and defined in the code. So why it needed in something more??

Dne 18.11.2016 v 10:53 unDEFER via Digitalmars-d napsal(a):

> On Friday, 18 November 2016 at 09:40:25 UTC, rikki cattermole wrote:
>> Perhaps you should treat it as a port to a new platform.
>> So start with getting druntime going (which means recompiling it).
>
> No, no recompile. The idea is very simple:
> 1. The cygwin provides libraries
> 2. I can rewrite dirEntries() using functions from cygwin. The posibility is provided by D language and not by runtime.
> 3. Profit
>
> What I'm understand wrong? Why simple using of cygwin-libraries can require druntime recompile?
No it does not require it. Your error seems like you do not links against your cygwin stdio, where do you place your cygwin.std.* files? Did you rename module std.whatever to module cygwin.std.whatever ?

On 18/11/2016 10:53 PM, unDEFER wrote:
> On Friday, 18 November 2016 at 09:40:25 UTC, rikki cattermole wrote:
>> Perhaps you should treat it as a port to a new platform.
>> So start with getting druntime going (which means recompiling it).
>
> No, no recompile. The idea is very simple:
> 1. The cygwin provides libraries
> 2. I can rewrite dirEntries() using functions from cygwin. The
> posibility is provided by D language and not by runtime.
> 3. Profit
>
> What I'm understand wrong? Why simple using of cygwin-libraries can
> require druntime recompile?

Cygwin is a massive platform, it isn't just a library.
It is a full port of programs, libraries and who knows what else.

Also you should read this, it pretty much sums up what I'm saying[0].

[0] https://cygwin.com/faq/faq.html#faq.programming.msvcrt-and-cygwin

On Friday, 18 November 2016 at 10:04:28 UTC, Daniel Kozak wrote:
> No it does not require it. Your error seems like you do not links against your cygwin stdio, where do you place your cygwin.std.* files? Did you rename module std.whatever to module cygwin.std.whatever ?

Oh, you are right, it is so easy. Of couse not "dmd try.d", it must be "dmd `find . -iname "*.d"`". Look, so simply:
======================================
$ dmd `find . -iname "*.d"`
OPTLINK (R) for Win32  Release 8.00.17
Copyright (C) Digital Mars 1989-2013  All rights reserved.
http://www.digitalmars.com/ctg/optlink.html
time.obj(time)
 Error 42: Symbol Undefined _fstat64
time.obj(time)
 Error 42: Symbol Undefined _open64
time.obj(time)
 Error 42: Symbol Undefined _stat64
time.obj(time)
 Error 42: Symbol Undefined _lstat64
time.obj(time)
 Error 42: Symbol Undefined _fchmod
time.obj(time)
 Error 42: Symbol Undefined _closedir
time.obj(time)
 Error 42: Symbol Undefined _readdir64
time.obj(time)
 Error 42: Symbol Undefined _opendir
time.obj(time)
 Error 42: Symbol Undefined _readlink
Error: linker exited with status 217443944
=======================================

A little bit more, and I will have this example working. I will upload my example..