Mail Archives: cygwin/2001/02/20/03:33:15
Hi Hans,
this depends on your fprintf format string. Be aware that MS has some
extensions that are not standard and therefore not supported. Anyway, you
have the source for both runtime libraries. Any contribution G++ to enhance
compatibility without breaking platform independent code is probably
welcome.
Greetings,
Jörg
>-----Original Message-----
>From: Hans Holberg [mailto:holberg AT o-s-c DOT de]
>Sent: Monday, February 19, 2001 6:01 PM
>To: Schaible, Joerg
>Subject: Re: Cygwin compiled DLL under Visual C++
>
>
>Hi Jörg,
>thanx for your answer.
>But why do we have the same runtime error in using the Cygwin DLL
>under GNU G++? Is it the same incompatibility?
>Do you have another idea to bring QT together with Cygwin?
>Hans
>
>----- Original Message -----
>From: "Schaible, Joerg" <Joerg DOT Schaible AT gft DOT com>
>To: "Hans Holberg" <holberg AT o-s-c DOT de>; <cygwin AT cygwin DOT com>
>Sent: Monday, February 19, 2001 5:03 PM
>Subject: RE: Cygwin compiled DLL under Visual C++
>
>
>Hi Hans,
>
>well it seems that you've lost - sorry to say that. You try to link
>incompatible run-time libraries and I doubt that you will get
>any further.
>Please check the archives, this is a well-known fact and not Cygwin
>specific. You would have similar problems using e.g. the
>Borland run-time.
>OTOH, a lot of developers would like to see this kind of
>compatibility and
>since Cygwin is open source, you (or your company) may want to
>volunteer.
>
>Greetings,
>Jörg
>
>
>>-----Original Message-----
>>From: Hans Holberg [mailto:holberg AT o-s-c DOT de]
>>Sent: Monday, February 19, 2001 4:54 PM
>>To: cygwin AT cygwin DOT com
>>Subject: Cygwin compiled DLL under Visual C++
>>
>>
>>Dear Cygwin-Support!
>>Dear Christopher Faylor,
>>we at OSC have bought 2000 seats of Cygwin for our product
>development.
>>We have developed a lot of functionality under Solaris, so we
>>use Cygwin for
>>the NT-Port.
>>We also have a separate platform independent GUI development with QT
>>(Trolltech) and C++.
>>It is not possible to compiler/or use QT under Cygwin. So we
>>have developed
>>the GUI
>>with QT under Visual C++. In order to access our ported
>>functionality we
>>have built a DLL
>>under Cygwin (1.1.4 and 1.1.8) with the dlltool. Then we have
>>linked the DLL
>>in our QT Visual C++
>>Project and we could link an executable. But it crashed! Then
>>we tried a
>>simple function without
>>Cygwin specific parts as a DLL (same procedure). It worked.
>>Then we used the
>>fprintf() function
>>in the Cygwin world in the DLL and it crashed again. So we
>>tried if Visual
>>C++ is the problem or not.
>>And it is not the problem, because we have linked the simple
>>DLL in a Cygwin
>>C++ (G++) program,
>>-> same crash!
>>
>>Please give us an advise how we can generate a running DLL
>>under Cygwin (in
>>C) in order to
>>use it in a Visual C++ project.
>>
>>If you need more information I can send you the error messages and a
>>description of
>>how we have generated the DLL.
>>
>>I really hope you can help us, because we have some hard deadlines.
>>Thanks
>>Hans Juergen Holberg
>>
>>_______________________________________________________________
>>_____________
>>OSC - OFFIS Systems and Consulting GMBH, Industriestr. 11,
>>D-26121 Oldenburg
>>Dipl.Inform. Hans J. Holberg Phone +49 (0) 4 41
>>3 50 42 -3 14
>>Director Consulting Embedded Systems Sekr.: -3 00
>> Fax: -3 80
>>E:Mail holberg AT o-s-c DOT de URL:
>http://www.o-s-c.de
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