gcc 3.0 & backward compatibility for libstdc++

[Laurent Pinchart <laurent dot pinchart at capflow dot com>]

I'm trying to install a 'Linux From Scratch', and it's driving me crazy.

I installed glibc 2.2.3 & gcc 3.0 (had a little problem with gcc 3.0 
when compiling it with LDFLAGS=-static, but that was only a makefile & 
env variables problem).

I'm now trying to compile ncurses. The compiler complains that 
strstreambuf has no member function named vscan. According to the ISO 
C++ standard, strstreambuf has no vscan, and so libstdc++-v3 shipped 
with gcc 3.0 has no vscan either. No problem with that.

The problem is that ncurses needs vscan, which was present in the 
libstdc++ shipped with gcc 2.95.2 (is that libstdc++-v2 ?). So, to be 
able to compile 'old' (the latest ncurses is not so old) programs, I 
need a '2.95.2-like' libstdc++. Am I right ?

If I'm right, how should I install it ? Is it possible to download it 
without downloading gcc 2.95.2 ? I checked several libstdc++ in 
ftp://ftp.gnu.org/pub/gnu/libstdc++, but the numbering scheme puzzles me 
(no 3.x version, ...), and I haven't been able to find a 'stand-alone' 
libstdc++ identical to the one in gcc 2.95.2. BTW, if someone could tell 
me how the libstdc++ versions are numbered, it would be nice. Is 2.8.0 a 
v2, and 2.90.8 a v3 ? There was still a vscan in 2.90.6, but not in 
2.90.8. So is 2.90.6 a v2 and 2.90.8 a v3 ? I'm lost :-)

Anyway, after downloading the version I need, how should I install it so 
I'll be sure it won't overwrite any files nor cause any problem with the 
libstdc++-v3 files ?

Any help will be appreciated.
Thanks to everybody in advance.

Laurent Pinchart