Hi,

I've got a header that I'd like to use in both application that use Boost and in ones that don't. Is there a define I can use to check whether Boost is available? In particular, I wish to use boost::trim_copy, but I don't want to force all files that include my header to use Boost.

I'm guessing BOOST_VERSION should be enough. I think all non-trivial boost headers end up including this, but I'm not 100%.