Cross compile world on i386 to x86_64

Ruslan Ermilov ru at
Sat Dec 2 09:13:14 PST 2006

On Sat, Dec 02, 2006 at 12:10:22PM -0500, Mike Meyer wrote:
> In <20061202170124.GD31897 at>, Ruslan Ermilov <ru at> typed:
> > On Sat, Dec 02, 2006 at 06:57:32PM +0530, Joseph Koshy wrote:
> > > >Can I avoid reinstalling the system with amd64 binaries by
> > > >cross-compiling world and kernel for amd64 on the installed
> > > >i386 FreeBSD-CURRENT?
> > > 
> > > Yes, it is possible, do check the archives for the details.
> > > 
> > We've been doing this "upgrade" last week;
> > compared to the last time I checked it, the
> > 32-bit compatibility only improved, so the
> > whole process was much simpler, and basically
> > was like this:
> I went through it a month or so ago. I'll add one bit of advice:
> Drop in a spare disk and dual boot during the transition. My system
> disk was mirrored, and I turned that off and set up one of the two as
> amd64 during the transition, then turned the mirror back on when it
> was done.
> That also makes the cross-compile installation process easier, as you
> can mount the second disk on your i386 system and just just install to
> it.
That's not sexy; with two disks you can install amd64 bits
on a spare disk under i386 without problems, boot from the
new disk, and so on, but this would not be called the
"in-place upgrade from i386 to amd64" then.  ;)

Ruslan Ermilov
ru at
FreeBSD committer
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