On Saturday, January 8, 2022, Andrew Randrianasulu <[email protected]> wrote:
> also, there is additional mechanism used by Termux, it does not require > root-level commands > > https://proot-me.github.io/ > > but you probably can use it on debian/arch/ubuntu.. > for fedora 34/35 (on x86_64) you can try this repo https://copr.fedorainfracloud.org/coprs/pgaskin/proot/ click on build and build number hyperlink to get into download dir, or add repo via provided instructions.. note: there is already proot 5.3.0... but if 5.2.0 works for you - great.. I can't test those methods due to storage space limitations on my tablet.. just ~200 mb free!) https://download.copr.fedorainfracloud.org/results/pgaskin/proot/fedora-35-x86_64/02689485-proot/ > > > > On Saturday, January 8, 2022, Andrew Randrianasulu < > [email protected]> wrote: > >> should be faster than full VM for compiling, but might not work for >> testing /proc/self pointing at wrong image? also ALSA still not work if >> called under qemu-user, last I checked) >> >> https://wiki.debian.org/QemuUserEmulation >> >> Installing packages >> The binfmt-support package contains a helper script to easily >> register/unregister binary formats with the kernel using the binfmt_misc >> module. >> >> Install qemu, binfmt-support, and qemu-user-static: >> >> # apt install qemu binfmt-support qemu-user-static >> Check whether the binfmt entries were successfully registered: >> >> # update-binfmts --display >> This command should print entries for each supported target user >> emulator, except for the host system. >> >> === >> >> >> see appendix if you already have chroot folder with arm system >> >> or try to use Raspbian's one from >> >> >> https://wiki.debian.org/RaspberryPi/qemu-user-static >> >> a bit involved when it comes to image resizing... >> >> === >> >> Note: If the host system is Debian Buster and the chroot will be Debian >> Bullseye, it is good to make sure the host has the version 5.2 of >> qemu-user-static, available from buster-backports. Otherwise some binaries >> may cause qemu-user-static to Seg Fault, see 987497. For example setting >> locale(s) in chroot fails without the upgrade of qemu-user-static. >> >> {..} >> sudo losetup -f -P --show 2020-08-20-raspios-buster-arm64.img >> >> >> Mounting the image >> Mount the image with root permissions: >> >> sudo mount /dev/loop0p2 -o rw /mnt >> Optional: If you want to mount the RaspiOS /boot >> >> sudo mount /dev/loop0p1 -o rw /mnt/boot >> Also mount necessary host directories. >> >> cd /mnt >> sudo mount --bind /dev dev/ >> sudo mount --bind /sys sys/ >> sudo mount --bind /proc proc/ >> sudo mount --bind /dev/pts dev/pts >> (not necessary/advised if you use systemd-nspawn) >> >> To get everything work (e.g., network) you need to comment out everything >> in /mnt/etc/ld.so.preload before you chroot in. Take care of that now! >> >> (not sure if copying qemu binary into chroot still needed on latest >> Debian?) >> cp /usr/bin/qemu-aarch64-static /mnt/usr/bin >> >> or qemu-arm-static for armhf >> >> Now chroot in! >> >> cd /mnt >> (not needed if we already in mnt?) >> sudo chroot . bin/bash >> >> now you can try to get git sources and install usual deps for Cin-gg >> compilation from inside arm/aarch64 chroot and see how far it comes! >> >> === >> >
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