Can't run GUB 2.9.4 on linux

[Joe Neeman]

I'm trying to install the GUB 2.9.4-1 on gentoo linux (amd64, but with a bunch 
of x86 compatibility libs). I get
$ 
LD_LIBRARY_PATH=/home/joe/oldlilypond/usr/lib/ 
/home/joe/oldlilypond/usr/bin/lilypond
/home/joe/oldlilypond/usr/bin/lilypond: 
/usr/lib/gcc/x86_64-pc-linux-gnu/3.4.4/32/libstdc++.so.6: 
version `CXXABI_1.3.1' not found (required 
by /home/joe/oldlilypond/usr/bin/lilypond)

The GUB of 2.8.1 works and I notice that
# 2.8.1

$ ldd /home/joe/lilypond/usr/bin/lilypond |grep std
$

# 2.9.4
$ ldd /home/joe/oldlilypond/usr/bin/lilypond |grep std
/home/joe/oldlilypond/usr/bin/lilypond: 
/usr/lib/gcc/x86_64-pc-linux-gnu/3.4.4/32/libstdc++.so.6: 
version `CXXABI_1.3.1' not found (required 
by /home/joe/oldlilypond/usr/bin/lilypond)
        libstdc++.so.6 
=> /usr/lib/gcc/x86_64-pc-linux-gnu/3.4.4/32/libstdc++.so.6 (0x55873000)
$

So it seems 2.8.1 is linked statically with libstdc++ and 2.9.4 isn't. Is this 
intentional?