Hello,
I'm trying to compile a C++ program which uses the icon library's PutIconTags () function. I've included

#include <proto/icon.h>

and the function call looks like this:

IIcon->PutIconTags ( NULL, 
    pDrawerIcon, 
    ICONPUTA_NotifyWorkbench, TRUE, 
    ICONPUTA_PutDefaultType, WBDRAWER, 
    TAG_DONE );

However, I get these errors:
error: 'ICONPUTA_NotifyWorkbench' was not declared in this scope
error: 'ICONPUTA_PutDefaultType' was not declared in this scope

If I comment the tags out, I get an IIcon error:
undefined reference to `IIcon'

What's wrong with my code? Do I need to include some additional system header files to make it work?

I'm compiling with these options: -O3 -N -Wall -lauto