Is there a known issue of linker errors with using boost::regex library with STLport.
If I don't install STLport I am able to build regex however I am getting linker error while trying to build after installing STLPort.
Vijay, apologies but I haven't had time to look at your project. Have you done as I suggested and just added the regex source files to your project and/or tried building regex as a static lib from the IDE using *exactly* the same settings as your project? There are so many variables with STLport it's pretty much impossible to track down problems like this via email. Basically it's a question of checking that the library build settings match your IDE project *exactly*. Check everything, then check it again, it's the only way. John.