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Last pushed: 2 years ago
Short Description
Machinekit build environment based on QEMU cross compiler for Armhf
Full Description


Machinekit build environment based on QEMU cross compiler for Armhf

This is an implementation of QEMU User emulation on a Docker container using proot


Download this docker container using the following commands

docker pull kinsamanka/mk-qemu-cross

To use the cross compiler environment, run the following docker command:

docker run -i -t --rm=true kinsamanka/mk-qemu-cross

This command will drop you to the chroot environment. You can verify that you're
running under an emulated environment by issuing the following command: uname - m, it should return armv7l

Compiling Machinekit

cd /usr/src/
git clone --depth=1
cd machinekit


./configure \
    CC=arm-linux-gnueabihf-gcc \
    CXX=arm-linux-gnueabihf-g++ \
     < ... whatever flags ... >

make -j4

To compile using the native compiler, remove the CC and CXX flags.

Exporting the results

The compilation results are normally exported using netcat:

tar cvf - . | nc -l -q1 -p <port> <destination ip>

The other option is to bind a host directory to the chroot container. The following command will bind the host dir to the /mnt directory:

docker run -v <host dir>:/opt/rootfs/mnt -i -t --rm=true kinsamanka/mk-qemu-cross

Note that the host dir must be specified using its full pathname.

Modifying the container

Note that any changes made on the container will be lost after exiting it due to the --rm=true switch.

To make permanent changes to the container, run the following command:

docker run -i -t kinsamanka/mk-qemu-cross

Make the desired changes and take note of the hostname. The hostname is the 12 digit hex number (e.g. root@2524b7a328a3:/#).

After exiting the container, commit the changes by running the following command:

docker commit <12 digit id> <container name>


docker commit 2524b7a328a3 MyContainer

To use the updated container, just run:

docker run -i -t --rm=true MyContainer
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