* grant beattie <grant@netbsd.org> [2004-02-29 11:21:30 +1100]:

> On Sat, Feb 28, 2004 at 06:40:32PM -0500, Jan Schaumann wrote:
> 
> > Hi,
> > 
> > Just to confirm:  it is possible to fake an older release for the
> > purpose of bulk builds, right?  I have an O2 with -current installed,
> > and would like to use it to bulk-build for 1.6.2-sgimips.  Am I correct
> > that extracting the 1.6.2-sets into a chroot (or building them into
> > there) is sufficient or do I need to tweak anything else?
> > 
> > Should I expect some breakage due to different kernel versions of the
> > running system and the bulk-faked system?
> 
> install pkgtools/libkver :)
> 
> This package provides a shared library and a replacement for
> sysctl(1) (when needed i.e. when the original one is statically linked)
> so that the real version numbers and strings of the running NetBSD
> kernel as returned by sysctl(3) and uname(3) are overridden by
> those the library is configured to report.
> 
> This is useful for -among other things- building packages in
> sandboxed/chrooted environment for a different NetBSD release than the
> system hosting the sandbox/chroot.

Very much so. I'd add one comment, in that you can do without LD_PRELOAD
if you setup /etc/ld.so.conf:
	libc.so.12      machdep.fpu_present     1:/usr/pkg/lib/libkver.so.1,libc.so.12

I've tried using something other than machdep.*, but never got anything to work.
Either ld.so.conf(5) is wrong when it says you can use <sysctl_variable>, or
the source needs to be fixed to allow other sysctl entries.

Another comment would be why is libkver looking for a symlink outside of the /usr/pkg/
tree?

Ron