How to build ports, using a version of clang installed from ports

[Stephen Woolerton]

Hi everyone,

I wish to compile a version of clang from ports, and then use that to build all my ports. 

By way of background, I'm running a 10.0 arm snapshot and the version of clang on the system is 3.4. A number of ports won't compile with clang 3.4, and so I wish to build the clang 3.3 port, and then compile all my ports with clang 3.3. 

How would I do this please?

Thank you
Stephen