Note that we use the Linux mainline kernel e. Below are snippets of our build machine configuration to support runtime package management along with other notes. This closely follows the previously referenced Yocto documentation.
We run an HTTP server using python's http. Let's see which python3 packages are installed on our target. Keep in mind that we are including debug information due to our debuglevel setting in dnf. Didn't find an answer to your question? And please note that we update our site daily with new content related to our open source approach to network security and system design.
If you would like to be notified about these changes, then please follow us on Twitter and join our mailing list. Note that we're currently working with the master branch for the 2.
Note that we use the same Linux host PC as our build machine and http server for package management. Please help us improve this article by adding your comment or question:.
Sign in authenticate with a 3rd party for enhanced features, such as image upload. Image was built with Yocto Project 2. A discussion of techniques to accelerate development with the Linux Kernel and related when working with the Yocto Project and an NXP i.
I got a yocto built for imx board. I can build ffmpeg package, but need also to populate headers and libraries in my SDK. You will need ffmpeg-dev as well. Headers go to -dev package. In general, you can check the packages that are produced by a recipe using oe-pkgdata-util. In this case:.Live Coding with Yocto Project #7: distros, machines, images and airmarrpi4.space
Learn more. Asked 1 year, 10 months ago. Active 1 year, 10 months ago.
Yocto Project Reference Manual
Viewed times. Didn't have any problems with prervious libraires like modbus, etc. How to build ffmpeg development packages? Thanks in advance. Alek Alek 57 7 7 bronze badges.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Taken from the NXP Community website. You can find the list in the generated. We've talked about this in the past and for various reasons, it is hard to know what packages would end up in the image, without going through the complete build process. One of the best tools for seeing what is an an image is the buildhistory class.
Add it to your user classes in local. The output ends up in the build directory in the buildhistory directory. Learn more. Is there a way to check the exact list of packages that will be installed in the image in Yocto? Ask Question. Asked 2 years, 5 months ago. Active 5 months ago. Viewed 9k times. Any guidance in this regard is appreciated. Thanks in advance.
Active Oldest Votes. David Bensoussan David Bensoussan 1, 1 1 gold badge 17 17 silver badges 37 37 bronze badges. Hi, for some reason pn-depends. Only task-depends. I actually discovered that pn-buildlist has what I need. But still I would like to show what this command is capable of, however the pn-depends.
It seems they did a refactor and it's not working on newer versions. The second method doesn't seem to show all packages that are in the image.
I can't remember with version I use to write this answer. It maybe changed. Could you find a way working for you?
Krupal Tharwala Krupal Tharwala 5 5 silver badges 15 15 bronze badges. This is a great tool for "after" the build, but he asked before. Angelo Dureghello Angelo Dureghello 71 3 3 bronze badges. Could you please give some hint on what it might do? That would be superhelpful. Hi, it's passed some time from when i was into this, but, probably the usage may be better checked here: stackoverflow. Sign up or log in Sign up using Google.
Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.As I mentioned in my previous blog, much confusion exists around terminology. I think this is especially true when we speak of recipes and packages in the Yocto context. In the early days of Open Embedded OEon which Yocto is based, there was a very simple relationship between recipes and packages.
The relationship is still a close one, but it has become more complicated, as everything does over time. A recipe is a set of instructions that is read and processed by the build engine called BitBake.
In its most basic form a recipe is a single file with some lines in it describing the software to be built. In practice, most recipes consist of multiple files, having a. In fact, most recipes also include other functionality beyond what is defined in the.
The two most popular package formats are still. Packages can also contain source code, but certainly in the embedded Linux community, that practice is dwindling.
One of the more common package formats found in the embedded space is. This was the default package format for OpenEmbedded-based distributions, while Yocto currently favors the RPM format. See my previous blog on this subject. By default, a recipe produces at a minimum, 4 packages. The other three are the development -dev package, the documentation -doc package, and the debug -dbg package. The development package most typically contains the header files and libraries, if there are any, for a given package.
The documentation package should be self explanatory, and for many packages, is empty! Documentation has not always been the top priority for development engineers, and this is no less true for open source developers. Some recipes produce many more packages. Take a look at the recipe for python for a good example. The current version of that recipe in the poky repository produces seventy packages. As you might expect, this is a pretty extreme example because python has many modules.
This is most confusing when trying to add new packages to your root file system image. He tried the obvious, based on general instructions in the various manuals which describe adding packages to images:. However, that failed because while there is a recipe called net-snmp, there are no packages by that name. Root file system images are created from packages, and not recipes.
Looking at this output, it becomes clear that the packages desired for installation on the root file system are net-snmp-server, net-snmp-client, and possibly the supporting packages such as the -libs and -mibs.
So your image must be modified to have these packages installed. In summary, the correct way to specify this is as follows:. BitBake -e is your friend. Awesome post! Using Hob to create a custom image helps make the distinction between images, recipes, and packages clearer since in one panel you choose your recipes but then in another you have to choose the specific packages from each recipe you what included in your image. Based on what layers you have available, this lists all the… whoa!Often a developer will want to add a new package such as tcpdump or openvpn, or other standard packages.
A GUI for bitbake is called Hob. Setting up a package feed is the easiest way to install packages, but it does require setting up a web server on your build host and adding in a feed conf file. A common question is 'how do I develop or modify a package in the bitbake environment'. Here is a step-by-step procedure that may prove useful as a guide:. If you are ultimately trying to produce a patch that will persist for the package you will want to use something like 'quilt' to track your patch in step 3.
Then, when your development cycle is complete you can:. Alternatively if you are trying to 'upstream' your patches which you should do to avoid future maintenance on your part :. One very simple way to do this that may or may not work depending on the complexity and dependencies is:.
Let's use the gst-plugins-bad package as an example. This package has quite a few items inside of it. This will all be controlled in it's bb file. Open this file, and modify it. Once done and saved, this stores a modified config file in the kernel's work-dir it will not be persistent if you clean or remove the workdir. Powered by Trac 1. Wiki Timeline Browse Source Search. Download in other formats: Plain Text.This version of the Yocto Project Reference Manual is for the 2. To be sure you have the latest version of the manual for this release, go to the Yocto Project documentation page and select the manual from that site.
Manuals from the site are more up-to-date than manuals derived from the Yocto Project released TAR files. If you located this manual through a web search, the version of the manual might not be the one you want e. You can see all Yocto Project major releases by visiting the Releases page.
To report any inaccuracies or problems with this manual, send an email to the Yocto Project discussion group at yocto yoctoproject. Welcome to the Yocto Project Reference Manual! This manual provides reference information for the current release of the Yocto Project. The manual is best used after you have an understanding of the basics of the Yocto Project.
The manual is neither meant to be read as a starting point to the Yocto Project nor read from start to finish. Use this manual to find variable definitions, class descriptions, and so forth as needed during the course of using the Yocto Project. If you want to use the Yocto Project to quickly build an image without having to understand concepts, work through the Yocto Project Quick Build document.
Currently, the Yocto Project is supported on the following distributions:. Yocto Project releases are tested against the stable Linux distributions in the following list.
The Yocto Project should work on other distributions but validation is not performed against them. In particular, the Yocto Project does not support and currently has no plans to support rolling-releases or development distributions due to their constantly changing nature.
We welcome patches and bug reports, but keep in mind that our priority is on the supported platforms listed below. If you encounter problems, please go to Yocto Project Bugzilla and submit a bug. We are interested in hearing about your experience. The list of packages you need on the host development system can be large when covering all build scenarios using the Yocto Project.
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I want to add gedit to the the image. But i am not able to find the dependencies of gedit package. You can use the following command which opens up a Dependency explorer that displays dependencies on the packages:.
You can also use Toaster, which is a web UI that collects information about what you build, including dependencies.
This video shows the dependency information provided:. You find the dependencies by reading the build documentation and the build system scripts in this case probably configure.
The list of packages installed in your image is stored in the manifest file besides of build history which is already mentioned. That manifest is located in the deploy directory i. Here as an example of the directory listing there are target images and the manifest file. Learn more. How to determine dependencies of recipes in yocto? Ask Question.
Asked 4 years, 4 months ago. Active 4 months ago.
Adding yocto packages
Viewed 11k times. Vikram Vikram 71 1 1 gold badge 2 2 silver badges 6 6 bronze badges. Active Oldest Votes. You can use the following command which opens up a Dependency explorer that displays dependencies on the packages: bitbake -g recipe-name -u depexp or bitbake -g gedit -u depexp ,in your case. On pyro and later use: bitbake -g recipe-name -u taskexp Note: this command needs python-gtk2 installed. Diego 4, 1 1 gold badge 27 27 silver badges 29 29 bronze badges. Note that depexp has been changed taskexp in Pyro and later.
Jussi Kukkonen Jussi Kukkonen Content of the manifest file looks like: alsa-conf cortexa7hf-neon-vfpv4 1. The list consists of the package name, architecture and a version. Here as an example of the directory listing there are target images and the manifest file example-image-genericx