Bug#630399: perl: multiarch libc and partial upgrades

[Jonathan Nieder]

Niko Tyni wrote:

> Clarification: I don't think this works because it leaves
> /lib/x86_64-linux-gnu out.

Sorry, mails crossed.  It's in libgcc.

> I guess we could also patch Configure not to check the existence of the
> directories but that doesn't seem very elegant to me...

Actually, that seems to me like the right thing to do independent of
the above, if upstream can be convinced it's a good idea.  But
rebuilding in an environment where the directories are known to exist
is certainly simpler.