Hi, Le 15/11/2015 19:08, John Paul Adrian Glaubitz a écrit : > Hi! > > On 11/12/2015 03:34 PM, Laurent Vivier wrote: >> For the qemu-m68k part, I've tried to merge it after the qemu-2.4 >> release, but there have been some comments and I have to rewrite a major >> part of the instruction translator. I need to find some time... > > Today realized that this can be extremely useful for building packages > for m68k and other slower/older architectures. > > I was playing around with combining chroot with qemu [1] and tried to > cross-build packages with sbuild which turned out to be successful. > > I made a test setup for armel as follows: > > $ apt-get install sbuild qemu-user-static binfmt-support > $ cd /srv/chroots > $ debootstrap --no-check-gpg --variant=buildd --foreign --arch=armel > unstable sid-armel-sbuild ftp://ftp.debian.org/debian > $ sbuild-update --keygen > $ cat /etc/schroot/chroot.d/sid-armel-sbuild > [sid-armel-sbuild] > description=Debian sid chroot for armel > type=directory > directory=/srv/chroots/sid-armel-sbuild > #groups=Debian,guest,d-i > #profile=dsa > #aliases=sid > groups=root,sbuild,glaubitz,buildd > root-groups=root,sbuild,glaubitz,buildd > #command-prefix= > #source-root-users=glaubitz,sbuild,buildd > #run-setup-scripts=true > #run-exec-scripts=true > $ adduser glaubitz sbuild > $ cp -av /usr/bin/qemu-arm-static /srv/chroots/sid-armel-sbuild/usr/bin > $ chroot sid-armel-sid > $ ./debootstrap/debootstrap --second-stage
In GitHub repo (https://github.com/vivier/qemu-m68k), on branch 680x0-v2.4.0, you can find a LXC script to create debian container: https://raw.githubusercontent.com/vivier/qemu-m68k/680x0-v2.4.0/scripts/lxc-cross-debian You must copy it to /usr/share/lxc/templates There is also a script to create different kind of containers with it: https://raw.githubusercontent.com/vivier/qemu-m68k/680x0-v2.4.0/scripts/debian-create-lxc.sh you can do something like: debian-create-lxc.sh raspberrypi to create a container compatible with raspberrypi. There is a script to configure binfmt: https://raw.githubusercontent.com/vivier/qemu-m68k/680x0-v2.4.0/scripts/qemu-binfmt-conf.sh After that, you can convert a container into a qemu image: https://raw.githubusercontent.com/vivier/qemu-m68k/680x0-v2.4.0/scripts/lxc-img > After that, I could cross-build xbill for armel under my normal user > with: > > # sbuild --source --arch=armel --arch-all -d sid xbill_2.1-8.dsc > > This can be done analogously for sh4 with the exceptions that libmpfr4 > and libgomp10 need to be installed manually here as they are available > in the unreleased suite only which debootstrap doesn't support. > Furthermore, qemu-sh4 doesn't implement syscall 186 [2] and segfaults > on an amd64 host [3] but I assume these issues should be fixable. With > the help of workaround, I am now cross-building using this setup for > sh4. > > Unless I have overlooked anything, this sbuild configuration should work > without any issues with the buildd package and hence can be used to > set up a very fast buildd :). Thus, it might be a very good alternative > to Aranym once Laurent's patches have been merged with qemu upstream. > > Adrian > >> [1] https://wiki.debian.org/QEMU >> [2] https://bugs.launchpad.net/qemu/+bug/1516408 >> [3] https://bugs.launchpad.net/ubuntu/+source/qemu-linaro/+bug/1254824 > Thanks. When you find a bug, or want a feature, in qemu-linux-user don't hesitate to send it to me :) Laurent
