> 	After doing cc -E, I now believe "long" is mistakingly used for file
> 	offset, instead of off_t, like return value and argument for gzseek().
> 	I'd like to propose the following fix.

A better fix would be to find out why HAVE_UNISTD_H is not defined and
make sure it is defined in the future.  All NetBSD systems have unistd.h
and should use it.

-allen