Yocto and LmP build machine requirements

Building a Yocto image (Yocto or LmP) means building a whole Linux distribution. To succesfully build such images, you must:

• Have a build machine capable of building a Yocto image:

  • A CPU with a minimum of eight cores.

  • A minimum of 100GB of free disk space per target. We highly recommend a solid state drive disk.

  • A minimum of 16GB of RAM available. Our recommendation is 32GB.

    • 64GB RAM accelerates the build because you can keep most of the files in a RAM cache.

    Tip: Logs with signal 9 or Killed signal terminated program indicate a lack of memory.

• Have the required unhindered connectivity to internet:

  Yocto builds consist of more than 1,500 components spread around the internet. Invasive man-in-the-middle proxies can prevent the builds from working by interfering with the end-to-end security built into some of the tooling (such as curl or git). If you have such an enviroment, please work with your local IT support staff for solutions because these will be specific to the network infrastructure your IT has chosen. We also recommend you read Yocto documentation on working with proxies.

  Errors that indicate issues caused by proxies include:

  • fatal: unable to connect to github.com: github.com[0: 140.82.121.3]: errno=Connection timed out.
  • do_fetch. Failed to fetch URL.
  • fatal: unable to connect to git.yoctoproject.org:git.yoctoproject.org[0: 44.225.90.102]: errno=Connection timed out.

  You can also test for this:

  curl -L https://dl.google.com/go/go1.14.4.linux-amd64.tar.gz >go1.14.4.tar.gz
  

  If that fails with curl: (60) server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt, a proxy is being used.

• Log into the build machine as a non-root user. If you are a root user:

  1. Add another user.
  2. Log in as the non-root user before proceeding further. The user may be in the sudoers group.