FreeBSD 9 & recompile ports

[Volodymyr Kostyrko]

George Kontostanos wrote:
> Greetings all and my apologies for cross posting!
>
> There seems to be a confusion regarding the ABI change in FreeBSD 9
> and if this affects the usual upgrade path which includes a full port
> rebuild.
>
> The relevant post is here: http://forums.freebsd.org/showthread.php?t=28831
>
> Frankly, I am also confused because I remember a relevant discussion a
> few months ago in the lists. Traditionally a major RELEASE upgrade
> requires a full ports rebuild, however this time there is no
> COMPAT_FREEBSD8 in GENERIC and most upgraded systems seem to be
> working fine. On the other hand this is stated in UPDATING:
>
> 20110828:
>          Bump the shared library version numbers for libraries that
>          do not use symbol versioning, have changed the ABI compared
>          to stable/8 and which shared library version was not bumped.
>          Done as part of 9.0-RELEASE cycle.
>
> Your input would be appreciated!

Why can't it be that only shared libraries should be bumped, but no 
kernel incompatible changes were introduced?

-- 
Sphinx of black quartz judge my vow.