Date: Fri, 26 Feb 2010 17:15:53 +0200 From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: Patrick Mahan <mahan@mahan.org> Cc: freebsd-hackers@freebsd.org Subject: Re: Building FreeBSD on a linux FC11 box. Message-ID: <873a0oqb86.fsf@kobe.laptop> In-Reply-To: <20100221202250.GF57731@acme.spoerlein.net> ("Ulrich \=\?iso-8859-1\?Q\?Sp\=F6rlein\=22's\?\= message of "Sun, 21 Feb 2010 21:22:51 %2B0100") References: <4B800F60.60700@mahan.org> <20100220210314.GB22800@kiwi.sharlinx.com> <20100221202250.GF57731@acme.spoerlein.net>
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--=-=-= Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable On Sun, 21 Feb 2010 21:22:51 +0100, Ulrich Sp=F6rlein <uqs@FreeBSD.org> wro= te: > On Sat, 20.02.2010 at 13:03:14 -0800, R. Tyler Ballance wrote: >> You might want to ask the Debian GNU/kFreeBSD guys: >> http://www.debian.org/ports/kfreebsd-gnu/ >> >> I bet they've got a good idea :) > > They are using the kernel only, though. > > Before you reinvent the wheel, take a look at NetBSD, they are known for > their cross-compilation work. It's non-trivial to set up a NetBSD-like cross-compilation environment, but the bits you have to use are well-documented in the support of the NetBSD source tree for 'tools'. I've experimented a bit with some of the work that's needed and it includes at least the following: * mtree -- This is used by parts of the build glue to set up build-time directories. * make -- Targetting *all* possible platforms with BSD make is probably not worth the effort, but adding a minimal configure.in script that can produce an 'fbmake' binary suitable for cross building FreeBSD is doable and not very hard. With these two in place and a bit of Makefile target hacking it might be possible to cross-build FreeBSD on e.g. Linux. I don't have a Linux machine anymore, but if someone starts doing this I can probably set one up and test any patches. --=-=-= Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.11 (FreeBSD) iEYEARECAAYFAkuH5bAACgkQ1g+UGjGGA7aB/wCggV7frZPeALfAwquxvvEUWDzc qrsAn0HtlnqZ/F6aztvmhPY/d0ClrB7G =Jfu8 -----END PGP SIGNATURE----- --=-=-=--
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