On one of the boost.regex pages it is written : Note that the full STLPort libraries appear not to support single-thread static builds....
STLport's makefiles only build the multithreaded versions, there is no STLPort version built that supports static single thread runtimes (of course you can build this variant yourself from the IDE if you want).
If it is not possible to create single threaded static builds then how to use the boost multi-threaded date_time libraries with the STLport libraries???
Just use them: make sure the libraries are in your lib search path, and then set your project to use any of the multithreaded runtimes (under code generation). The code will link to the right STLport and Boost libs "automagically". HTH, John.