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References:	<03641eb2-5a32-b6f7-2fb2-f71af81f76d9 AT gmail DOT com> <01f85e1d-788d-1727-7549-bf216448ca31 AT SystematicSw DOT ab DOT ca>
In-Reply-To:	<01f85e1d-788d-1727-7549-bf216448ca31@SystematicSw.ab.ca>
From:	Jean Vanhay <jean DOT vanhay AT gmail DOT com>
Date:	Mon, 29 Jul 2019 10:33:01 +0200
Message-ID:	<CAFqei5RQr6jO_CEgCS=+KhhgCHgYHUtoZMrgJm1KKhyDLCMkMQ@mail.gmail.com>
Subject:	Re: Compilation of Qt5 Cygwin in Qt Creator
To:	Brian DOT Inglis AT systematicsw DOT ab DOT ca, cygwin AT cygwin DOT com
X-IsSubscribed:	yes
X-MIME-Autoconverted:	from quoted-printable to 8bit by delorie.com id x6T8XqIA003438

Hello Brain,

Thanks for your reply :-). To answer yours questions :

> Do you also have to build under and for the Cygwin environment,
> and run under Cygwin?

I think I am not clear.. sorry. I need to build under Cygwin (qmake /
make). I develop under Windows. Actually with notepad++.
The binary file is injected on a board where ElinOS6.2 is running.
Because the project use Qt Libraries, I want to develop under Qt Creator
(Windows Version). I search a way to do that :).
I hope I am a little bit more clear :).

> Think of Cygwin as another Unix distro rather than a Windows environment.
> It's easy to port many Linux and X11 applications to Cygwin and Cygwin/X.
> It's major work to port any Windows app to Cygwin or any other Unix
distro.
> Just pretend you're working under a strange Unix distro (like SuSE) ;^>

I am working with a strange Unix distro, ElinOS is based on Yocto ;). It
can be weird to develop a Unix app under Windows but I search a way to do
that.
Actually the qmake & make search the right libs to compile, only if I
launch both command under the cygwin.
My project works on the target. I have actually tried the qmake & make from
ElinOS, I can do the same from cygwin.

> You would have to port Qt Creator to run under Cygwin/X, as has been done
with
> Qt Designer and the other QT tools.

Is it possible to do the opposite ? I would like to create a Kit where :
- Compilers is the gcc/g++ from Cygwin / ElinOS (works)
- Debbuger is the gdb from Cygwin / ElinOS (works)
- Qt Versions is the qmake from Cygwin / ElinOS (actually the main issue)

The last point is the hardest point to resolve (as describe in my first
email).

> You should be able to build Qt Creator to run under Cygwin/X, using the
cygport
> utility to make it easier to reproduce a Unix package build under Cygwin.
> ...
> ...

As I understand I need to use Cygwin/X. I am going to try that (I never
used it).

Best Regards,
Jean Vanhay

Le dim. 28 juil. 2019 à 17:02, Brian Inglis <Brian DOT Inglis AT systematicsw DOT ab DOT ca>
a écrit :

> On 2019-07-27 05:39, Jean Vanhay wrote:
> > I have some issues about Cygwin Qt5 and Qt Creator on Windows 10.
> > I have a computer running on Windows 10 and a Qt versions Qt 5.11.2
> MinGW 32
> > bits and Qt Creator 4.7.2.
> > I have a project where it is required to develop under a Cygwin
> environment.
>
> Do you also have to build under and for the Cygwin environment, and run
> under
> Cygwin?
>
> You could run your existing Ubuntu code under WSL displaying on Cygwin/X.
>
> > After install cygwin, I was hoping cygwin Qt Versions can be integrated
> to the
> > Qt Creator IDE on Windows 10. But for some reason, I never succed to
> install it.
> > If I try to install Qt Versions from Cygwin 64, on Qt Creator I have
> this message :
> > -> Qt Creator -> Options -> Kits -> Qt Versions -> Add...
> > qmake C:\cygwin64\lib\qt5\bin\qmake.exe could not be added
> > "C:\cygwin64\lib\qt5\bin\qmake.exe" crashed.
> > I can add compiler / debugger but the environment to develop is not
> correct
> > because of the qmake crashed.
>
> Think of Cygwin as another Unix distro rather than a Windows environment.
> It's easy to port many Linux and X11 applications to Cygwin and Cygwin/X.
> It's major work to port any Windows app to Cygwin or any other Unix distro.
> Just pretend you're working under a strange Unix distro (like SuSE) ;^>
>
> > The other cygwin environment that I want to use comes from SysGo/ElinOS.
> I have
> > open a topic on the Qt Forum :
> > https://forum.qt.io/topic/105153/qt-versions-cygwin-g
> > If I do the same step than cygwin64, the error message is completely
> different :
> > cannot read
> >
> /opt/elinos-6.2/cdk/x86/x86_64/glibc-2.24/share/qt5/mkspecs/devices/linux-elinos-g++/qmake.conf
> > : no such file or directory
> >
> > After some research on how to change the qmake -query that Qt Creator do
> when I
> > want to install a Qt versions, i discovered that the problem can maybe
> come from
> > cygwin.
> > If I create a qt.conf file. And depending on the path I write
> > "/cygdrive/c/sysgo/opt/..." or "C:\sysgo\opt", the Qt Creator send me
> some
> > differents messages.
> > When I write "/cygdrive/c/..." => Qt Creator write the full path as
> cygwin path.
> > When I write "C: \"                    => Qt Creator get back the
> "default" path.
> >
> > I hope the background is a little clear... In both way my questions is :
> > - How to install cygwin64 Qt 5 on Qt Creator Windows version ?
>
> You would have to port Qt Creator to run under Cygwin/X, as has been done
> with
> Qt Designer and the other QT tools.
>
> > - Is it possible to "custom" "hardcoded" path in cygwin to have a full
> path from
> > root C:\ ?
>
> You should be able to build Qt Creator to run under Cygwin/X, using the
> cygport
> utility to make it easier to reproduce a Unix package build under Cygwin.
>
> If sources are available on any of the standard mirrors, and build using
> any of
> the standard tool chains, the effort required can be minimal, once you
> understand how to get cygport to do your work for you. That's how Cygwin
> volunteers are able to support 11270 packages on two architectures in their
> spare time.
>
> There are 96 qt5 support and 34 library packages available under Cygwin,
> but
> only for 5.9 currently, and only clang/llvm 5 as yet. You may be able to
> build
> the newer versions if required by starting from the current Cygwin
> packages and
> sources, and using those as bases for building the newer versions from
> newer
> sources.
>
> You would need to install the Cygwin/X x.org server, tools, and
> development
> packages for X and Qt, and any build dependencies, as you would under
> Linux.
> The Cygwin package names may differ somewhat from the Linux package names
> e.g.
> qt5-declarative-tools, qt5-devel-tools, qt5-doc-tools, qt5-linguist-tools,
> although not all required packages or libraries may have been ported to
> Cygwin yet.
>
> Porting Linux packages to Cygwin using cygport involves installing the
> cygport
> package, any of your package build dependencies, defining the package name
> and
> version and where to download the sources (many mirrors are supported) in a
> PACKAGE.cygport file, running "$ cygport PACKAGE.cygport download all
> test", and
> fixing any build or test issues, as you would on Linux.
>
> You could download the sources for the qt5-...-tools packages and use those
> PACKAGE.cygport files as models for one for Qt Creator.
>
> Once cygport builds your Cygwin package, you can install your build using:
> $ tar -xvf PACKAGE-V.V-1.x86_64/dist/PACKAGE/PACKAGE-V.V-1.tar.xz -C /
> or submit it for inclusion in the Cygwin repo, so it can be installed using
> Cygwin setup by anyone, anywhere.
>
> --
> 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.
>
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