C++ Include Paths

I am just starting to use Sun Studio 12 and I have a problem with include files. I am not sure what I am doing will compile or run but I did not expect to get errors that file s could not be found. in the tools.options.C/C++.Code Assitance.C++ Compile.Include Directories I have:
/opt/SUNWspro/prod/include/CC/Cstd
/opt/SUNWspro/prod/include/CC/std
/opt/SUNWspro/prod/include/CC
/opt/SUNWspro/prod/include/CC/rw7
/opt/SUNWspro/prod/include/cc
/usr/include
/usr/include/libgnomeui-2.0
My source file of test.cc has
#include <stdlib.h>
#include <gnome.h>
#include <gtk/gtk.h>
gnome.h is in /usr/include/libgnomeui-2.0 and I have created symbolic links that define /usr/include/gtk, /usr/include/libgnomeui, /usr/include/gdk and other gnome include directories. gnome.h is in /usr/include/libgnomeui-2.0. From the editor I can access gnome.h and gtk.h by right-clicking and selecting Go To.Include. If I open gtk.h, the editor shows all of the files included in that module as undefined.
When I compile I get:
"test.cc", line 9: Error: Could not open include file<gnome.h>.
"/usr/include/gdk/gdkcolor.h", line 30: Error: Could not open include file<cairo.h>.
Plus a bunch more
I expected that the compiler would use symbolic links. What am I doing wrong? Also I wanted to add the "-H" option when the compiler is invoked. Where would I add that in the Tools.Options settings?
Thanks,

Try going to Project Properties->C/C++/Fortran->C Compiler->General->Include Directories and adding your include directories there.

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Awesome. I'm getting very close.
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