[Bug other/48378] gcc 4.6.0 fails to build from source

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48378

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-03-31 
10:38:30 UTC ---
this is documented at
http://gcc.gnu.org/install/configure.html
and
http://gcc.gnu.org/wiki/FAQ#configure