file not found in xcode4.6
My code was build with Xcode version 4.5.2. But now i upgraded to Xcode 4.6.
Code started give error like <wchar.h> file not found.
I am building my code using terminal & i have included <iostream> that includes <wchar.h> internally.
Please suggest what needs to be done
OS X Mountain Lion (10.8.2), Xcode 4.6