[Gimp-developer] cairo.h missing - how can I locate it?

[Paul Thompson <patjahsd gmail com>]

When I include gimp/libgimp/gimp.h as <libgimp/gimp.h> in compile, there is
a statement

#include <cairo.h>

I cannot find cairo.h in my gimp source which I downloaded quite recently.
Is there an additional source which includes the cairo.h file?

Paul A. Thompson