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nerves v1.15.0 Release Notes

  • 🚀 This is a major update to Buildroot 2021.02. Please review the Buildroot release notification below in addition to the following. The following changes affect all systems:

    0️⃣ 1. The rngd daemon's jitter entropy option changed defaults. This daemon feeds values from a hardware random number generator to the Linux kernel's entropy pool. Without it, you can experience long boot delays as programs wait for enough entropy to get good random numbers. Jitter entropy is a way of gathering entropy from the CPU without any special random number generation hardware. It's not necessary with most hardware with Nerves and it adds a boot-time delay as the CPU is measured. Previously it defaulted to off. Now you need to add the following to your nerves_defconfig:

       # BR2_PACKAGE_RNG_TOOLS_JITTERENTROPY_LIBRARY is not set

    🏗 2. Buildroot changed how it computes hashes over projects downloaded from version control systems. If you have made a custom system and added your own packages, you may need to update the .hash files to -br1 versions. The files are different so the existing checksums will not match. See buildroot 5b95a5d for more info.

    1. The nervesproject/nerves_system_br Docker image that corresponds to this release has been updated from Ubunto 18.04 LTS to Ubuntu 20.04 LTS. This fixed an internal compiler error that was seen, but resulted in some package changes (no more Python 2, for example) that might affect scripts using it.

    • 👌 Improvements

      • It's now possible to include executable files for other CPU architectures in the root filesystem without have the scrubber find them and report an error. To use this feature, add the file .noscrub to the directory with the files.

    • ⚡️ Package updates