Re: [Openexr-devel] OpenEXR Windows port

[Dustin Graves]

Luc-Eric Rousseau wrote:
>  > -----Original Message-----
>  > From: Dustin Graves [mailto:address@hidden
>  >
>  > Last night I did a rough port to Windows with Visual Studio 6 + Intel
>  > 5.0 Compiler.  I was unable to use the compilers provided with both
>  > Visual Studio 6.0 and .NET because they do not recognize this
>  > as legal syntax:
>  >
>  > template <class T>
>  > template <class S>
>  > inline bool
>  > Vec2<T>::operator != (const Vec2<S> &v) const
>  > ...
>  > The template followed by a template causes a syntax error.  This is a
>  > bug with the compiler, which I'll try reporting to Microsoft.
>
> try template <class T, class S>, should be the same

I'd tried this, but these actually aren't the same thing.  A template 
parameter list of a template and its template member cannot be conbined, 
so there isn't going to be a simple work around for this with the 
current Microsoft compiler.


>  > 3.  std::min and std::max are unavailable (due to conflict
>  > with min and
>  > max in windefs.h), so std::_MIN and std::_MAX are provided instead.
>
> When you need to include windows.h, use #define NOMINMAX before
> including it.  See windef.h.  you may also #define WIN32_LEAN_AND_MEAN
> to speed up compile.

The problem here is that std::min and std::max do not seem to exist with 
VC6.  They are provided with VC .NET, but with VC6 they are renamed to 
_cpp_min and _cpp_max and then #defined to _MIN and _MAX.


>  > 5.  Scoping error with variable declarations within 'for' loops,
>  > resulting in multiple defines, required variables to be
>  > declared outside
>  > of the 'for' loop, once per function.
>
> I'm not too fond of the new scoping rule, but you can enable it in
> VC++ 6.0 with "Disable language extensions", in the compiler settings.
> It's off by default because it breaks existing code, in some cases
> silently.

This works nicely.  I will update the project files to include this 
setting.