No rule to make target `index.hhk'



I haven't tried "make install" for a few years, but I thought I'd try 
today:

make[4]: Entering directory `/c/maximacvs3/doc/info'
make[4]: Nothing to be done for `install-exec-am'.
make[4]: *** No rule to make target `index.hhk', needed by 
`install-datafiles'.  Stop.

Advice? I've did ./bootstrap -- it seems that make install almost 
finished.

Barton