[CMake] Passing requirements to users

[James Mansion]

(Another stupid noob question, sorry!)

bjam has a handy feature where I can define a build
for a library and specify that a project that uses
the library will automatically get certain settings,
such as an appropriate #include and defines.

I don't seem to be able to do this automatically.

Have I missed something?

I'm playing with 2.4.2 and have the book, if that
helps.

Thanks
James