[Coin-ipopt] Re: linking IPOPT in VC++ 6.0

[damien at khubla.com]

Hi Guys,

you can't build IPOPT 3.x under Visual Studio 6.  You'll get their famous
"internal compiler error" on the templates.  I went through all sorts of
hoops a few weeks ago trying to get this to work.  VS 6 doesn't have the
latest round of template functionality from the C++ revisions, MS
deliberately only put them into VS7 and higher to encourage people to
upgrade.

Damien

> Hallo Michael,
>
> I'm copying your message to the mailing list, in case someone else reading
> this has an idea...
>
>> Unfortunately we ran into some troubles, when we tried to install IPOPT
>> along
>> with Diffpack.
>> The reason is that Diffpack is running under Windows using the Microsoft
>> VC++
>> 6.0
>> compiler.
>>
>> As in the ipopt tarball there are just project files for
>> VisualStudio.net we
>> tried to
>> - create the projects in our Visual Studio, compile & link
>> - create the ipopt library in cygwin (which worked of course) and to
>> link
>> against this library in VS
>> but failed in both cases, due to compilation problems in some template
>> classes.
>
> If you try to hook up Ipopt using the C interface (not the C++ interface)
> it might be easier.  As far as I know, there are ways to build
> Windows-compatible DLLs in Cygwin (with dlltool or so?) and you cold
> export the C intreface symbols, but I have to admid that I don't know yet
> how to do that.  Using the C interface, you wouldn't have to deal with
> templates etc.
>
>> So could you please tell me if there is a chance to compile and link
>> IPOPT
>> using MSVC++ 6.0?
>> Or do you think the problems are caused by incompatibilities of C# and
>> C++?
>
> I have no experience with C#, and our code is not written in C#, it is
> standard C++.  However, I have never tried to build Ipopt with MSVC++ 6.0
> yet.  If your other code is in C#, again, maybe using the C interface
> makes it easier to link with Ipopt.  If that doesn't help, could you
> please send some more details (to the mailing list) on what is going
> wrong?
>
> Schoene Gruesse nach Erlangen,
>
> Andreas
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