[trans-mem][build] Hack around top-level Makefile libstdc++ breakage

[Joseph S. Myers]

On Thu, 3 Nov 2011, Richard Henderson wrote:

> I've worked for 2 days to try to work out what our Makefile does.  It
> seems completely and totally broken to me.  I can't imagine there's a
> quick fix, but I'd be delighted to be proven wrong.

It would be fixed by staged install (install into a temporary directory 
within the build tree, run the compilers from there relying on 
relocatability so that only the install to the staging directory and 
nothing else needs to know how to put pieces together from their build 
tree locations), but that is anything but a quick fix (probably months of 
work)....

-- 
Joseph S. Myers
joseph@codesourcery.com