[Bug bootstrap/54820] [4.8 Regression] ada: cannot find -lstdc++ since 4.8.0 20121002

[Arnaud Charlet]

> On that machine, the entire user-space is built without any static
> libstdc++
> libraries, so it's quite annoying (and unexpected) to have to install them
> for
> Ada bootstrap.  Couldn't Ada use the g++/libstdc++ bits from the compiler
> being built?

That would probably be better indeed, it's dangerous to rely on the
base compiler too much, in particular when the base compiler is a C++ compiler.

This whole switch to C++ is causing all sort of subtle troubles in particular
wrt building GNAT, so if people who worked on the switch could have a look and
suggest a change, I'll be happy to review it.

Arno