Installing data in heirarchical fashion

[David Bruce]

Hi,

I'm trying to rewrite my Makefile.am's to make better use of Automake's 
built-in variables.  I'm a little stuck on how to get my program's (tuxmath) 
data files installed in a heirarchical tree.  My current scheme puts the data 
under /usr/local/share/tuxmath, with deeper directories such 
as /usr/local/share/tuxmath/images, 
/usr/local/share/tuxmath/images/backgrounds, 
and so forth.

If I just use:

dist_pkgdata_DATA = bkgd1.jpg bkgd2.jpg bkgd3.jpg  

in my Makefile.am for the backgrounds subdirectory, the files just wind up in 
$(pkgdata) itself, i.e. /usr/local/share/tuxmath.

Is there a proper, automated, "Automake Way" to get the whole data tree 
installed in the desired location?

Thanks for any help,
-- 
David Bruce