cannot find input file: `wnotify_config.h.in'

[Stephen R. van den Berg]

Compiling 8.1 on i386 stops at:
configure: creating ./config.status
config.status: creating make_variables
config.status: creating Makefile
config.status: error: cannot find input file: `wnotify_config.h.in'

Any ideas?
-- 
Stephen.