NetBSD upgrade system from source
Disclaimer: I wrote these notes some time ago, and I haven't add the occasion to perform a system upgrade from sources since then. Thus, these information may be outdated and/or incomplete.
Backup data (/etc)
$> tar zcvf etc-3.0.tar.gz /etc
Prepare the directories (as root)
%> mkdir /usr/src %> mkdir /usr/obj %> mkdir -p /usr/builds/i386 %> mkdir -p /usr/releases/i386
Change the ownership of those directories to you user.
Get the sources
$> wget ftp://ftp.NetBSD.org/pub/NetBSD/NetBSD-3.0.2/source/sets/*.tgz
Unpack the sources
$> for file in *.tgz; do tar zxvf $file -C /; done
Build or update the crosscompiler
$> cd /usr/src $> ./build.sh -D /usr/builds/i386 -R /usr/releases/i386 -u \ -m i386 tools
Crosscompile the kernel
$> ./build.sh -D /usr/builds/i386 -R /usr/releases/i386 -u \ -m i386 kernel=GENERIC
Install the new kernel (as root)
%> cd / %> mv netbsd netbsd-3.0 %> cp /usr/src/sys/arch/i386/compile/obj/GENERIC/netbsd .
Reboot the system.
Crosscompile the userland
$> build.sh -D /usr/builds/i386/ -R /usr/releases/i386/ -U -u \ -m i386 build
Install (as root)
%> build.sh -D /usr/builds/i386/ -R /usr/releases/i386/ -U -u \ -m i386 install=/
postinstall failed checks and fix things accordingly.
Update /etc (as root)