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Date: Thu, 21 Feb 2008 12:33:50 +1100
From: hce <webmail DOT hce AT gmail DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: Building C++ program with QT under cygwin
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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?

Should I also to call QT gmake with "-unix -o" to generate Makefile,
the same parameters I was calling from linux?

>  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 :-).

Thanks Erich.

Jim

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