2.4.0 makefile issue

[Geoffrey Leach <geoff hughes net>]

Presumably because there's something that I don't have installed that 
is not checked for by ./configure

make
....
make[2]: Leaving directory `/usr/local/src/balsa-2.4.0/images'
Making all in doc
make[2]: Entering directory `/usr/local/src/balsa-2.4.0/doc'
make[2]: *** No rule to make target `../gnome-doc-utils.make', needed 
by `Makefile.in'.  Stop.
make[2]: Leaving directory `/usr/local/src/balsa-2.4.0/doc'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/local/src/balsa-2.4.0'
make: *** [all] Error 2