busybox-chroots

This script builds a small busybox-based chroot, useful for compiling software that has a hard time with cross-compilation.

See the releases tab for downloadable tarballs.

Some tips for running these chroots:

Patched QEMU

See https://github.com/just-containers/qemu/releases - this is a version of qemu with an additional "-execve" flag. You'll be able to run this chroots like:

cp qemu-arm-static /path/to/chroot/bin/qemu-arm-static
chroot /path/to/chroot /bin/qemu-arm-static -execve /bin/sh

You'll likely still need root access for this to work, or the right combination of fakeroot + fakechroot.

PRoot + any QEMU

This has a few benefits:

• No root access
• No need to copy qemu into the chroot

Example:

proot -r /path/to/chroot -q qemu-arm-static -w / /bin/sh

Or better yet:

env - PATH=/usr/bin:/bin:/usr/sbin:/sbin \
  proot -S /path/to/chroot \
  -q qemu-arm-static \
  -w /
  /bin/sh

proot -S is similar to -r, but with binds to /dev, /sys, etc.

See https://github.com/just-containers/PRoot/releases for statically-compiled binaries of proot.

Usage

./download
./build arm-linux-musleabihf
./build arm-linux-musleabi
./build aarch64-linux-musl
./build x86_64-linux-musl
./build i486-linux-musl

Tarballs will be in the dist directory.