Re: [Mingw-users] Help to transfer programs of cygwin

[Christopher F. <cg...@re...>]

On Thu, Jan 17, 2002 at 01:03:58AM +0000, Jos? Fonseca wrote:
>On 2002.01.17 00:28 Christopher Faylor wrote:
>>On Wed, Jan 16, 2002 at 04:07:21PM -0800, Paul Garceau wrote:
>>>----- Original Message -----
>>>From: Jos? Fonseca <j_r...@ya...>
>>>Date: Wednesday, January 16, 2002 2:48 pm
>>>Subject: Re: [Mingw-users] Help to transfer programs of cygwin
>>>
>>>> On 2002.01.16 19:52 Jianguo Wang wrote:
>>>> > I ahve a program which is complied well under cygwin. And it seems the
>>>> > executable file is using some cygwin dll. How can I make the program
>>>> > compilable under GNU mingw32? And also executed without the need of
>>>> > cygwin
>>>> > dll?
>>>> >
>>>> > Your help is highly appreciated.
>>>>
>>>>That really depends on how much of the POSIX functionallity provided by
>>>>Cygwin your program uses and what unix tools (besides the compiler and
>>>>make) are necessary to build it.  In the best case a simple 'make'
>>>>could do it.  In the worst case you'll have to gather some extra stuff
>>>>to be able to do it.
>>>> Take a look at
>>>> http://mefriss1.swan.ac.uk/~jfonseca/gnu-win32/documentation/porting/ for
>>>> some more insight in this problem.
>>>>
>>>> After you build your program the cygwin dll dependency will be
>>>> dropped
>>>> since MinGW programs depend on msvcrt.dll.
>>>
>>>You might also consider using MSYS.  It is already set up with Posix
>>>dependencies intact, and is, in essence a Mingw development environment
>>>which eliminates any and all dependencies on cygwin.dll while
>>>maintaining and supporting Unix-like shells.
>
>I also make a strong reference to MSYS in that page.  ;-)
>
>>>As Jose has noted, Mingw has no dependencies on cygwin.dll.  MSYS is
>>>Mingw with shell capabilith (hence posix dependencies intact).  MSYS is
>>>in beta testing and is available in binary form from the Mingw download
>>>page (http://sourceforge.net/project/showfiles.php?group_id=2435).
>>
>>The last I heard, msys was a modified cygwin DLL.  So, wouldn't he be
>>trading reliance on the cygwin1.dll with reliance on the msys.dll?
>
>Not really.  MSYS is a posix system which has as its purpose enable the
>porting of unix packages _to_ MinGW.  MSYS is centered in MinGW an not
>on himself.  For example, by default when build an application on MSYS
>you target MinGW.

And how does that help in this regard?  AFAICT, this doesn't solve the
user's problem in any way.  They have a program which uses the cygwin
DLL.  They were not, AFAICT, talking about a POSIX environment for
building tools.  They have a program which used the UNIX API.  Not the
same thing at all.

cgf