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
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-x...
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.
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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...
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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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