------- Comment #5 from dominiq at lps dot ens dot fr 2009-11-29 16:21 ------- (In reply to comment #3) > So how do I switch to 64-bit mode?
On x86_64-apple-darwin* it is the default, so I assume you are using i686-apple-darwin*. In this case you need a "multlib" build and you compile with -m64. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42207
