Binutils needs to support 64-bit binaries, too, or the compiler won't be able to. Are you sure that the version of binutils that you have supports 64-bit binaries? Thanks, Lyle -----Original Message----- From: gcc-help-owner@xxxxxxxxxxx [mailto:gcc-help-owner@xxxxxxxxxxx] On Behalf Of nico Sent: Thursday, November 11, 2004 5:40 AM To: <gcc-help@xxxxxxxxxxx> <gcc-help@xxxxxxxxxxx> Subject: AMD 64 Hi, how do I have to configure my gcc, if I want to use the -m64 compile-switch? I tried this: ../gcc-3.4.3/configure --prefix=/usr/local/gcc-3.4.3 --with-cpu=athlon64 make bootstrap but that is the result: gcc -m64 bla.c bla.c: sorry, unimplemented: 64-bit mode not compiled in What can I do? Thanks Nico
