# Revision history [back]

I suspect this is a bug in your code and not in your build files, because you're getting an error about missing types/symbols/namespaces. If this was an error in your build files, I would expect either missing header files or linker errors about undefined symbols.

I suspect this is as simple as missing the boost namespace on these keywords, or missing a using namespace ... clause, but without seeing a sample of what you're trying to compile, it's hard to say for sure.