Hi, Since gcc-4.9_4.9-20140218-1 does not build on GNU/Hurd due to a minor error in gcc/lto/lto.c, see bug #740153, I had hopes that this version could have included that patch (and forwarded upstream). The currently main reason to have gcc-4.9 building on GNU/Hurd since it is needed for gnat-4.9, and we are working on making it build on GNU/Hurd too. Thanks!