[gentoo-user] Re: can fix preserved-rebuild ...

[walt <w41ter@gmail.com>]

William Kenworthy wrote:
> After each update, these appear, and for libusb, the number slowly
> increases (up to 185 now).  so far I have done the suggested "emerge
> @preserved-rebuild", plus tried rebuilding every package mentioned but
> after building, there is no change ...
>
> !!! existing preserved libs:
>>>> package: dev-libs/libusb-0.1.12-r5
>   *  - /lib/libusb.so
>   *      used by /lib/udev/check-mtp-device (media-libs/libgphoto2-2.4.3)
>   *      used by /usr/bin/dfutool (net-wireless/bluez-utils-3.36)
>   *      used by /usr/bin/evolution (mail-client/evolution-2.26.2)
>   *      used by 185 other files
>>>> package: x11-libs/libXaw-1.0.5
>   *  - /usr/lib/libXaw.so.8
>   *  - /usr/lib/libXaw8.so
>   *  - /usr/lib/libXaw8.so.8
>   *  - /usr/lib/libXaw8.so.8.0.0
>   *      used by /usr/bin/xgpsspeed (sci-geosciences/gpsd-2.38)
> Use emerge @preserved-rebuild to rebuild packages using these libraries
> rattus ~ #

Are you using an unstable version of gentoo, e.g. ~x86 or ~amd64?  The
only reason I know of for 'preserving' an old version is if there is also
a newer one, i.e. libusb-1.0.1, which is a ~ version.

On my ~amd64 machine I had both libusb-0.1.12-r5 and libusb-1.0.1.
I just deleted the 0.1.12 and revdep-rebuild found and rebuilt usbutils,
hal, and sane-backends with no problems, so there seems to be no reason
to have the old version unless you perhaps have the new version masked
on your machine for some reason?