Re: Upraded from 7.0.1 to 7.0.2 --> could not run ELF binary

[Joerg Sonnenberger <joerg%bec.de@localhost>]

On Thu, Nov 03, 2016 at 08:54:53AM -0400, Brad Spencer wrote:
> coypu%SDF.ORG@localhost writes:
> 
> [snip]
> 
> > For *most* things, there is a strong emphasis on backwards compatibility.
> > To the point that if you upgrade a NetBSD 1.5 system to NetBSD 7.99.x,
> > and some program fails to run, it will be probably considered a bug.
> 
> Over the many years I have run NetBSD there has been two instances where
> this was not true for me.  The first was from 0.9 to 1.0.  In that case,
> emacs from 0.9 would not work on 1.0 without a recompile.  The second
> was from 4.0 to 7.0.  In that case, programs that used pthreads /
> schedular activations did not work as that support had been removed some
> time ago.  This messed with some packages from the 4.0 pkgsrc on the 7.0
> kernel and I don't believe that there was ever an official fix for this
> situation although I did find at least one email thread talking about
> this.  Neither situation was fatal or hard to deal with.

I did provide sources for a drop-in libpthread, so that you can run
pre-5.0 binaries on 5.0+ where necessary.

Joerg