------- Additional Comments From jakub at gcc dot gnu dot org 2005-01-06 14:12 ------- There is no bug, the compiler has been configured incorrectly. --libdir=/usr/lib64 should not be used for multilibbed gcc's, --libdir=/usr/lib is what you want. The os multilib magic will DTRT. Similarly, --libexecdir=/usr/lib64 --with-slibdir=/lib64 is wrong too, you should either just use --prefix=/usr and not pass these at all, or pass --libdir=/usr/lib --libexecdir=/usr/lib --with-slibdir=/lib. powerpc64 gcc defaulting to -m64 works just fine that way for years.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17646