libstd++-v3 build failure

[Marchelm Bomers]

Recently tried to build the above on Digital Alphaserver 2100, Tru64 Unix 5.0A
(with gcc 3.0), but ran into the following error.

=== QUOTE +++
checking for g++ that will successfully compile libstdc++-v3... configure: error
: please upgrade to GCC 3.0 or above

checking how to run the C preprocessor... (cached)
/users/marchelm/ftp/gcc/gcc-3.0/gcc/xgcc -B/users/marchelm/ftp/gcc/gcc-3.0/gcc/
-B/usr/local/alphaev5-dec-osf 5.0/bin/ -B/usr/local/alphaev5-dec-osf5.0/lib/
-isystem /usr/local/alphaev5-dec-osf5.0/include -E
checking for cstdio to use... stdio
checking for clocale to use... generic
checking for ISO C99 support in <math.h>... no
checking for ISO C99 support in <stdio.h>... no
checking for lldiv_t declaration... no
checking for ISO C99 support in <stdlib.h>... no
checking for additional ISO C99 support in <wchar.h>... no
checking for enabled ISO C99 support... no
checking for enabled long long support... no
checking for c header strategy to use... c_std
checking for thread model used by GCC... single
checking for exception model to use... configure: error: unable to detect
exception model
make: *** [configure-target-libstdc++-v3] Error 1
=== UNQUOTE ===

I'm sure that I read something somewhere regarding this problem but can't seem
to locate it (blindness setting in I'm sure!). Could someone out there possibly
point me in the right direction one way or the other?

Tanx muchly.

Marchelm Bomers