On Thu, 2012-03-22 at 11:23 +0100, Svante Signell wrote: > Please Cc: me since I'm not subscribed to help-gnat. Are you subscribed to gcc-help? If not, subscribe. Ok, you've created your own section, I would copy the mlib-tgt-specific-* files that are closest to HURD (BSD one?) and then rename it to mlib-tgt-specific-gnu or mlib-tgt-specific-hurd and then modify that. Do the same for s-osinte-* files if kfreebsd does not match exactly for hurd. You'll notice that there are OS specific versions of those files. Start there. Luke.