2013/9/19 Wang Xuerui <idontknw.wang@gmail.com>

> 2013/9/19 gevisz <gevisz@gmail.com>:
> > I would like to build sane-backend only for one specific scanner.
> >
> > However, there are a huge lot of different USE flags for other scanners
> > that are already switched on by default.
> >
> > Is there any easy way to switch them off?
> >
> > Something like:
> >
> >           media-gfx/sane-backends -sane_backends* sane_backends_hp
> >
> > Exactly that way does not work, but may be something like that...
> >
> > ...instead of directly switching off every one of them.
>
> According to the Package Manager Specification, the variable should
> not be incremental, i.e. any value set would override *any* defaults
> or previously set values. So just do SANE_BACKENDS="xxx" in your
> make.conf, same as what you'd do for VIDEO_CARDS and the like.
>
> Hope it helps :)
>

Yes,

SANE_BACKENDS="hp"

works,

SANE_BACKENDS="+hp3500"

does not.

Thank you for all who replied.