Obtaining the value of a preprocessor constant at compile time??

[JUAN DENT]

I have a preprocessor constant BOOST_MSVC and I want to print its value as I compile the code.. How can I do this?

It could be something like:

#error BOOST_MSVC

but that does not work...

Thanks,
Juan

[JLBorges]

See: http://stackoverflow.com/questions/12637392/c-preprocessor-expand-macro-in-a-warning