Date: Sat, 19 Apr 2003 09:28:06 -0500 From: Mike Meyer <mwm-dated-1051194487.705ba5@mired.org> To: =?iso-8859-1?q?Paul=20Jansen?= <vlaero@yahoo.com.au> Cc: questions@freebsd.org Subject: Re: compiling kernel for another machine then installing - how? Message-ID: <16033.23798.356601.919618@guru.mired.org> In-Reply-To: <20030419053455.63747.qmail@web40109.mail.yahoo.com> References: <20030419053455.63747.qmail@web40109.mail.yahoo.com>
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In <20030419053455.63747.qmail@web40109.mail.yahoo.com>, Paul Jansen <vlaero@yahoo.com.au> typed: > I've also looked in the handbook but it doesn't > discuss this issue. > Basically I've got a slow machine and a much faster > machine. I wanted to compile the kernel for the > slower machine on the faster one to save a lot of > time. I've followed the directions in the handbook to > compile a kernel as normal but I'm not sure exactly > what I need to copy and where. Is it easier to NFS > mount to do this? I tried and ran into some pathing > issues. > Can anyone help? What you need to copy depends on which version of FreeBSD you are running. With 4.x, you need to get /kernel and the contents of /modules into place. With 5-whatever, you just need the contents of /boot/kernel. For 4.x, if you are just building a custom kernel for a system that is already running from the sources you started with, you can copy either /usr/src/sys/compile/CONFIGNAME/kernel (traditional kernel build methodology) or /usr/obj/usr/src/sys/CONFIGNAME/kernel (make buildkernele methodology) over, and use the /modules that is already installed. If you need to install /modules, it's probably easiest to NFS-mount the /usr/src and /usr/obj on the target system and do a "make install". The trick here is that you have to mount /usr/src with the same path name as it has on the fast system, as that path name is used in the object tree. So if it's really /usr/src on your fast system, mount it as /usr/src on the slow one. If it's really in /my/scratch/disk/freebsd/src and /usr/src is a symlink to that, you have to mount it as /my/scratch/disk/freebsd/src on the slow system, and create the symlink if you want. /usr/obj doesn't have that requirement, but I do it the same way anyway. The only way I know of to do this for 5.0 is the NFS-mount and install, but I haven't really gotten into 5.0. <mike -- Mike Meyer <mwm@mired.org> http://www.mired.org/consulting.html Independent Network/Unix/Perforce consultant, email for more information.
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