GCC and libraries

[Konrad Scorciapino]

Hello,

I've installed wxWindows libraries, but got some errors when trying to compile  
some code that included them:

konrad at localhost ~/fonte/wx > g++ HelloWorldApp.cpp -o HelloWorldApp
HelloWorldApp.cpp:1: wx/wxprec.h: No such file or directory
HelloWorldApp.cpp:4: wx/wx.h: No such file or directory
konrad at localhost ~/fonte/wx >

After searching, I found those files (wx.h and wxprec.h) at 
/usr/X11R6/include... Do I need to configure anything to make gcc compile?

Thanks!