-V<version> and libstdc++

[Carlo Wood]

Why doesn't using option -V switch libstdc++ to?
Especially since libstdc++ is part of the gcc distribution,
it would be handy to get the same headers when I use
-V2.95.3 as do people who only have 2.95.3 installed.

The reason I want to use -V is to test if my package
will also work with older compilers (thus, for people who
have *only* an older compiler installed).

If this has been discussed in the past at length then
my excuses for asking again.  I'd be happy to be refered to
the most important mails in the archive in that case.

Apart from the question why it doesn't work out-of-the-box,
I really need to test compiler/libstdc++ combinations (headers
and binaries) for multiple releases of gcc.  How can I best
achieve this?

-- 
Carlo Wood <carlo@alinoe.com>

PS I have installed (or tried to): 3.1, 3.0, 2.96 (redhat 7.0/rawhide 1.0),
   2.95.3 (recent) and 2.95.1 (the oldest I want to support myself).