cvs commit: src/sys/kern kern_tc.c src/sys/net rtsock.c src/sys/netipx ipx_proto.c src/sys/netnatm natm_proto.c

David O'Brien obrien at
Sun Sep 11 18:36:18 PDT 2005

On Sun, Sep 11, 2005 at 10:29:16PM +0100, Robert Watson wrote:
> On Wed, 7 Sep 2005, David E. O'Brien wrote:
> > Modified files:
> >   sys/kern             kern_tc.c
> >   sys/net              rtsock.c
> >   sys/netipx           ipx_proto.c
> >   sys/netnatm          natm_proto.c
> > Log:
> > Forward declaring static variables as extern is invalid ISO-C.  Now that
> > GCC can properly handle forward static declarations, do this properly.
> As a result of this change, it is no longer possible to build 7.x kernels 
> on 6.x worlds without building all of world or tweaking kernel makefiles. 

We do not support building a HEAD kernel on a RELENG_ box.  Never have.
That it usually works for you is just gravy.

The documented minimal steps to build a HEAD kernel is:

	make kernel-toolchain

> While that's not a formally supported configuration, it makes it a lot 
> easier and faster to do development from a central buildbox on a farm of 
> test systems.

Building a HEAD kernel on RELENG_ isn't anywhere near a supported
configuration.  I really don't know where you got the idea it was.  On a
6.0-beta2 machine I just did a HEAD 'make kernel-toolchain' - it took
3m53.49s and allowed me to build a HEAD kernel just fine.

> In the future, could you merge the gcc fixes to the relevant branches
> before merging the dependent C changes, in order to avoid this sort of
> thing?

I'm afraid that is unreasonable to do in this case.  I'd be waiting an
undetermined amount of time for RELENG_6 to thaw before I could do this
work.  HEAD was already frozen for 1 months this year - you're
effectively asking me to work as if is frozen for an additional 2 months.
On top of that - the "relevant branches" is HEAD and only HEAD.  Which
is where the GCC fixes were committed before depending on them.

Note that I did the RELENG_5 MFC for you personally, knowing you do try
to build HEAD kernels on RELENG_*.  I would have MFC'ed to RELENG_6 for
your benefit, but its frozen.  You are an RE - please feel free to MFC
the bug fix.  I certainly would not mind. :-)

-- David  (obrien at

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