Compiling STLPort 5.1.4 with VC9 (using the VC8 settings) produce compiler Errors C2487 (in _locale.h for instance).
It seems that the new compiler of Microsoft has the "Static const init bug".
I had to insert the following line at the end of in _msvc.h
#define _STLP_STATIC_CONST_INIT_BUG 1
Please add new rules for VC9 in the next STLPort release !