PATCH RFA: Build stages 2 and 3 with C++

[Ian Lance Taylor]

David Edelsohn <dje.gcc@gmail.com> writes:

> I now can get through the build of the compiler, but stage2 and stage3
> libstdc++ and libsupc++ files have many comparison failures due to
> tree.c:get_file_function_name() introducing explicit randomness to
> produce different symbols for anonymous namespaces:

Interesting.  I don't know why this doesn't happen on GNU/Linux.
Perhaps AIX has symbols which are dropped on GNU/Linux for some reason.

Presumably the fix will be to use -frandom-seed.  Does this patch fix
the problem?  (The only real change is to fragment.am, the other changes
are all generated by automake).

Ian

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