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Date: Sat, 21 Feb 2004 09:23:19 -0500 (EST)
From: Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To: cygwin AT cygwin DOT com
To: vemuri AT helixgenomics DOT com
cc: cygwin AT cygwin DOT com
Subject: Re: cygwin & windows application..
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On Sat, 21 Feb 2004 vemuri AT helixgenomics DOT com wrote:

> Dear all,
>
>       Suppose that I have developed an application (app.exe) using cygwin.
>
> Is it mandatory to have cgywin installed on the client system to run that
> application 'app.exe'? Is there any work around for this ?
>
> Is there any way of making app.exe which can work with out constraints?
>
> Practically, it may not be a good porting philosophy for cygwin,
> if cygwin becomes mandatory on every system for running an application
> developed by cygwin.
>
> Thank you for any help.
> Prasad.

Cygwin is a POSIX emulation layer.  If you want the full POSIX emulation
provided by Cygwin (i.e., POSIX paths, system call semantics, etc), you'll
have to have Cygwin on the target machine -- no ifs or buts about it.
If, however, you simply use Cygwin as a development environment (e.g., use
gcc to compile the code, make to manage your projects, etc), perhaps the
MinGW project may be of help.  FYI, Cygwin's gcc has a MinGW target, which
is invoked by passing the "-mno-cygwin" flag to gcc.  If your project
builds with "-mno-cygwin", the resulting executable won't require Cygwin
on the target machine.

Note that if you get "missing functionality" errors with "-mno-cygwin", it
will probably be non-trivial to port the project to MinGW.  Also note that
if you have any problems using the "-mno-cygwin" flag, all questions and
complaints should go to the MinGW mailing lists, and not the Cygiwn ones.
	Igor
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