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Date: Thu, 21 Feb 2008 13:24:06 +1100
From: hce <webmail DOT hce AT gmail DOT com>
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Subject: Re: Building C++ program with QT under cygwin
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On Thu, Feb 21, 2008 at 12:58 PM, Larry Hall (Cygwin)
<reply-to-list-only-lh AT cygwin DOT com> wrote:
>
> hce wrote:
>  > On Thu, Feb 21, 2008 at 11:55 AM, Erich Dollansky
>  > <oceanare AT pacific DOT net DOT sg> wrote:
>  >> Hi,
>  >>
>  >>  one thing at a time.
>  >>
>  >>
>  >>  hce wrote:
>  >>  >
>  >>  > I am new to cygwin. I've just installed cygwin for building my C++
>  >>
>  >>  I see Cygwin as an emulator. Your program will see Linux but not
>  >>  Windows. But you still can call Windows directly.
>  >>
>  >>
>  >>  > and the C++ program was built using macro #ifdef WIN32 for the code of
>  >>  > select(), read() and write() system calls. My understand is that I can
>  >>  > use all linux system calls under cygwin, should I remove all #ifdef
>  >>  > WIN32 in the program and compile with a parameter -unix rather than
>  >>  > win32?
>  >>
>  >>  Do not delete those things. Never ever even think of deleting them.
>  >>
>  >>  > The major issue is the QT package. In linux, I installed a QT package
>  >>  > for linux and called the QT gmake to generate a Makefile. On window
>  >>  > the QT was installed for window and compiled under window environment.
>  >>  > I have got errors when using window QT to generate Makefile under
>  >>  > cygwin. How should I use the QT under cygwin? Should I download a unix
>  >>  > version QT and build the QT using unix macro under cygwin, or should I
>  >>  > still using window QT under cygwin?
>  >>  >
>  >>  You must install QT inside Cygwin if you want to make full use of it.
>  >
>  > All right, I am going to install the QT inside Cygwin. Now, there are
>  > two QT packages, one for Window and one for Linux. Should I download
>  > one for Linux and build it for linux under Cygwin?
>
>  If you can live with QT3, just go to kde-cygwin.sourceforge.net and install
>  the pre-packaged version using 'setup.exe'.

I am using QT 4.3 under linux, so I guess have to download the same
version QT to the cygwin. I guess you said yes I should install the QT
4.3 for Linux package under Cygwin. Please correct me.

>
>  > Should I also to call QT gmake with "-unix -o" to generate Makefile,
>  > the same parameters I was calling from linux?
>
>  If you must go this way then yes, I would recommend trying that.
>
>
>  >>  I have no idea if this will work.
>  >>
>  >>  In theory you should be able to use the Windows version. This will make
>  >>  your program even more weird as it itself will behave like a Linux
>  >>  program but the libraries are then a mix of Windows and Linux.
>  >>
>  >>  Try to stick either with Cygwin or move to Windows.
>  >
>  > I have to stick with Cygwin as the Windows does not support select()
>  > for file system, nor does the minGW. Try to learn Cygwin program
>  > environment as much as possible :-).
>
>  In general, if you work the way that you would work on a Linux system,
>  then you'll have better luck with Cygwin.

Great, I have zero experince on Window program. This is what I am looking for.

Thank you Larry.

Jim

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