ncurses++ will not compile with gcc 3.x

[Felix Natter]

hi,

I think it's better to turn off building ncurses++ by default
because gcc 3.x (soon to be released) will not compile it,
and there is no easy way to fix it (ncurses++ relies on non-standard
GNU-extensions to iostreams).

You could also check for the version number of gcc
(if building with gcc) and only build it if it's < 3.x.
-- 
Felix Natter