cross-platform c++ classes?

[Lucas Vogel]

I am looking to create a development library based on a cross-platform API.
The way I would like to develop my library would be to create a "core set"
of c++ classes, with platform-specific implementations(i.e., a COM subset
for windows) based on these core classes. The API that I am developing off
of is implemented on Windows, (Red Hat) Linux and SGI(IRIX I think). 

My question to the council is, how do I create this core set of classes so
that they are also cross-platform compatible? Any and all
recommendations/suggestions would be greatly appreciated.

Thanks guys!

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Lucas Vogel
lvogel@exponent.com
623-587-6739	work
623-587-4191	fax
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