Confused About Linux Compatibility

Boris Samorodov bsam at
Fri Nov 7 12:34:09 PST 2008

Drew Tomlinson <drew at> writes:

> I am attempting to install a Linux RPM of Legato's Networker Backup
> Client on FBSD 7.1  I do not know if this is possible but I hope so.
> :)
> I have followed instructions in the Handbook and
>  I am at the point of installing
> an appropriate linux_base port and linux_base-f8 seemed like the most
> recent/reasonable.  However when I attempt to install, I get this
> output:
> ** Port marked as IGNORE: emulators/linux_base-f8:
>        compat.linux.osrelease: 2.4.2 is not supported
> ** Listing the failed packages (-:ignored / *:skipped / !:failed)
>        - emulators/linux_base-f8
> Further Google searches suggest that compat.linux.osrelease is a
> sysctl setting.  I've seen reference to setting it to 2.6.16 but also
> that this is experimental.  I found
> but this leaves me confused as
> well.
> Bottom line, what linux_base port should I install and do I need to
> set this sysctl to something?  I'm confused...

Current default (i.e. well tested and supported) linux base port is
linux_base-fc4 with compat.linux.osrelease=2.4.2. This should be your
first try. If you get any further questions a better mailing list (to
look for additional information as well as asking questions) is
freebsd-emulation at .

Boris Samorodov (bsam)
Research Engineer, Telephone & Internet SP
FreeBSD committer, The Power To Serve

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