Bitbake cache, Approved on: 15:22, 28 January 202...

  • Bitbake cache, Approved on: 15:22, 28 January 2026 Pages BitBake cheat sheet Last edited 4 weeks ago BitBake takes several steps when fetching source code or files. The goal is maximum build security and as much time savings as possible. So my questions are: Is there some way to explicitly set the BitBake then reloads the cached information about the recipe instead of reparsing it from scratch. This document provides a comprehensive overview of the caching mechanisms and performance optimizations in BitBake. A single build can easily devour 50GB–200GB of storage, and over time, leftover Specifies the code parser cache directory (distinct from CACHE and PERSISTENT_DIR although they can be set to the same value if desired). 1 Class Types 1. bitbake can automatically cache the build outputs and use it for future builds, this cache is called the "shared-state cache" and is controlled with the SSTATE_DIR variable The only solution is to: bitbake -c cleanall <list_of_my_recipes_to_be_rerun> So I have to explicitly clean the cache to tell bitbake to rerun them. 3. The default value is “$ {TOPDIR}/cache”. Note: It will take a few hours to build the image depending on the number of Ever wondered what bitbake does when parsing? If you've ever wondered where bitbake spends its time during parsing, its now quite easy to find out! Start with a clean cache by "rm tmp/cache -rf". - openembedded/bitbake When starting bitbake I get the following info that the dependency cache is empty and parsing all recipes takes several minutes. Optimizing BitBake build performance To optimize BitBake build performance, you need to configure Intention This page is intended to make the life of new developers easier. 2 Configuration Files 1. This manual provides information on the BitBake tool. This is very frustrating as with every bitbake command I have to wai 文章浏览阅读679次，点赞4次，收藏5次。bitbake主要使用三种缓存机制：下载缓存 (DL_DIR)、编译缓存 (TMPDIR)、共享状态缓存 (SSTATE_DIR)_bitbake清除编译缓存 The SState cache data is on an internal (HTTPS) cache server. Bitbake uses sstate cache to determine which recipes need to rebuild. Optimizing BitBake build performance To optimize BitBake build performance, you need to configure it to use multiple threads, enable parallel tasks, and utilize a faster cache. - bitbake/lib/bb/cache. 1 Recipes 1. 1 Introduction 1. Now, we are ready to start a full clean build in Yocto. bb files that contain the . bitbake -c clean The official bitbake Git is at https://git. The fetcher codebase deals with two distinct processes in order: obtaining the files from somewhere (cached or otherwise) and then When using sstate cache, these signatures are compared and any difference will cause the task to be rerun. The information attempts to be as independent as possible regarding systems that use BitBake, such as BitBake then reloads the cached information about the recipe instead of reparsing it from scratch. 5 Append Files 1. What I Welcome to the BitBake User Manual. Recipe file collections exist to allow the user to have multiple repositories of . 3 Classes 1. If we know that we want cached tasks to be used we can generate the needed signatures and 4 Yocto Project Concepts This chapter provides explanations for Yocto Project concepts that go beyond the surface of “how-to” information and reference (or If you’ve worked with the Yocto Project, you know it’s a powerful tool for building custom embedded Linux distributions. 4 Layers 1. py at master · openembedded/bitbake Copyright © 2004-2026, Richard Purdie, Chris Larson, and Phil Blundell. where foo is the name of the package without any extension or version number. 3 Concepts 1. <bitbake-devel @ lists. A powerful feature of the Yocto build system is the shared state cache, usually called sstate cache for brevity. You can BitBake Practical Guide, Programmer Sought, the best programmer technical posts sharing site. bb files that contain the If there is no setscene tasks running, sstate cache can't be used because sstate function got broken or some environment value changes invalidate sstate cache. 2 History and Goals 1. To get a package build just type. org> This work is licensed under the Creative Commons Attribution License. openembedded. It covers how BitBake utilizes various caching strategies to bitbake can automatically cache the build outputs and use it for future builds, this cache is called the "shared-state cache" and is controlled with the SSTATE_DIR variable in your However, one common frustration is the **exponential disk space consumption** of Bitbake builds. 4 Obtaining Approved version. openembedded. After having built a recipe successfully, bitbake stores the output Feel free to add all your usual bitbake commands to this page. You can use following tools to check any BitBake, a popular build tool for Linux distributions, can be configured to enhance build performance. Building less stuff takes less time. org/bitbake/. However, one common frustration is the **exponential disk space consumption** The official bitbake Git is at https://git. bitbake foo. Do not open issues or file pull requests here. Feel free to add all your usual bitbake commands to this page Start a build To get a package build just type bitbake foo where foo is Table of Contents 1 Overview 1. I would like to use this cache from various devices.


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