Update of cairoDevice failed

I just tried to install the cairoDevice package update, but got the following error:

cairoDevice.h:1:21: fatal error: gtk/gtk.h: No such file or directory
#include <gtk/gtk.h>

I have RGtk2 installed. I find a gtk/gtk.h in the Rgtk2/include/Rgtk2 directory. What else is cairoDevice expecting me to do or have installed?
Running RStudio 1.2.5001, R 3.6.1 on an updated Windows 10 laptop.
Thanks for any help you can give me.
Larry Hunsicker

This problem went away once the compiled version of the update became available. But it would be nice if the authors and maintainers included clearer instructions about how to install from source in Windows. I was unable to find anything on the web (RStudio community, R community, StackOverflow, etc. on how to do this. As I note above, it is not sufficient to have installed RGtk2, even though RGtk2 seems to have the required gtk/gtk.h. I suspect that there is some editing of the installation script that should be done.

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