Supporting cross-debugging vmcores in libkvm (Testing needed)

[Marius Strobl]

On Thu, Nov 19, 2015 at 11:16:24AM -0800, John Baldwin wrote:
> On Tuesday, November 17, 2015 11:45:05 PM Marius Strobl wrote:
> > On Mon, Nov 16, 2015 at 04:37:32PM -0800, John Baldwin wrote:
> > > Hmm, it is true that libkvm now depends on libelf.  My -j 16 tinderbox
> > > builds did not trip over that, and lib/Makefile has libelf in its
> > > "early" list of libraries (SUBDIR_ORDERED), so it seems like it should
> > > be built before libkvm is tried?
> > 
> > Well, I'd agree in principle but also just can say that -j16 builds
> > reliably fail here:
> > --- lib/libkvm__L ---
> > /home/marius/co/build/head3/i386.i386/usr/home/marius/co/head3/src/tmp/usr/bin/
> > ld: cannot find -lelf
> > cc: error: linker command failed with exit code 1 (use -v to see invocation)
> > *** [libkvm.so.6] Error code 1
> 
> I found this.  There are three(!) places I've had to annotate the libkvm now
> depends on libelf though it seems only one of them is actually used by
> buildworld (and that was the one I had missed).
> 

Does this mean that the .WAITs in SUBDIR_ORDERED of lib/Makefile
don't have the desired effect? I see other build failures which
suggest that other .WAITs in tree just don't work as expected.
Usually I only hit these with -j128 or higher, though.

Marius