[c-prog] multithreading in C++: platform specific?

[Jos Timanta Tarigan]

hi, 

Im trying to do a multithreading in C++ but i notice that some tutorials using 
a lib which i dont have on my default compiler. is multithreading is an add-on? 
does it come with default C++? Im using OS X, IDE: XCode and compiler: gcc 4.0. 
how can I do multithreading in C++ using my machine?


thanks in advance :)