markgrimes/yocto-sdk repository overview

⁠yocto-sdk

Image to cross compile code for ARM using the yocto sdk. Includes docker so that container images can be created from build result.

Includes a cross compile compatible version of ldd from https://gist.github.com/jerome-pouiller/c403786c1394f53f44a3b61214489e6f⁠ to figure out what libraries should be in an image. This version is at /bin/xldd and should be executed with the sysroot as an argument, i.e. xldd --root /opt/poky/2.4.2/sysroots/cortexa8hf-neon-poky-linux-gnueabi.

Also useful (but not included) is the extractDynamicLibs.sh⁠ script which can pull out those libraries into a single directory for addition to the docker image.

Currently provides the toolchain for Yocto 2.5 for the following architectures:

• aarch64
• armv5e
• cortexa8hf

The Dockerfile for each of these is in the relevant directory, the tag on docker hub matches the name.

⁠Usage

Start a container and you will have a shell. Before doing anything else you will need to source the environment script:

source /opt/poky/2.5/environment-setup-<arch>-poky-linux-gnueabi

You should then have CMake available, and the correct compiler commands stored in the $CC and $CXX variables. When using CMake, it automatically uses the compiler referenced in those variables.