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BitBake cheat sheet. Difference between revisions of 'BitBake cheat sheet' Return to history page ← BitBake cheat sheet quality revision quality revision Revision as of 06:56, 5 February 2019 (view source) importedFrq08988. BitBake cheat sheet. Last edited one month ago ago; BitBake cheat sheet Revision as of 07:40, 4 February 2020 by Jean Christophe Trotin (talk contribs) ← Older revision. Bitbake Cheat Sheet – Issue use warning but continue the build when a threshold is majual. Lists files whose stamp file timestamps are compared when the stamp policy mode is set to “whitelist”. You could create an include file named foo. Custom schedulers need to.
1 Command-line options[edit]
Here are a few commonly-used command line options for BitBake.
| Option | Meaning |
|---|---|
| -c <task> | execute <task> for the image or recipe being built. ex: bitbake -c fetch busybox. Some of the possible tasks are: fetch, configure, compile, package, clean |
| -f | force execution of the operation, even if not required |
| -b | execute tasks from a specific .bb recipe directly. This does not handle any dependencies from other recipes. |
| -v | show verbose output |
| -DDD | show lots of debug information |
| -s | show recipe version information |
| -e | output recipe environment variables |
| --help | get usage help |
| -c listtasks <image-or-recipe-name> | show the tasks associated with an image or individual recipe |
| -g <recipe> | output dependency tree in graphviz format |
Here are a few examples of command line options for BitBake.
| How to | Command | Comment |
|---|---|---|
| How to get the version of packages | bitbake -s | |
| How to get the Image package list | bitbake <image> -g | Then: cat pn-buildlist |
| How to clean a module | bitbake <module> -f -c cleanall | |
| How to clean an image | bitbake <image> - c cleanall | |
| How to load the packages to a local hard drive | bitbake <image> -f -c fetchall | |
| How to get the list of tasks | bitbake <image> -f -c listtasks | |
| How to display all appends | bitbake-layers show-appends | |
| How to display all layers | bitbake <recipe-or-image-name> -g -u depexp | |
| How to configure the kernel | bitbake <kernel_module> -c menuconfig | kernel module : linux-stm32 |
| How to make an SDK relocatable image | bitbake <image> -c populate_sdk | self-extracting image available in tmp-glibc/deploy/sdk |
2 .bb file syntax[edit]
This table lists some of the syntaxes found in recipe (.bb) files.
| Syntax | Meaning | Notes |
|---|---|---|
| simple assignment | ||
| assign if no other value is already assigned (default assignment) | ||
| weak default assignment | takes lower precedence than ?= | |
| variable expansion | OTHER_VAR expanded at time of reference to VAR | |
| immediate variable expansion | OTHER_VAR expanded when parsing this line | |
| append with space | ||
| prepend with space | ||
| append without space | ||
| prepend without space | ||
| append without space | ||
| alternate/override value | if string1 is listed in OVERRIDES, use 'bar' for value of VAR, otherwise use 'foo' | |
| conditional append | if string1 is in OVERRIDES, then append ' bar' to the value of VAR | |
| range-specific conditional | If the version of the package is in the specified range (1.0-1.8 in this example), then perform an override on the indicated variable | |
| python code expansion | ex: VAR = 'the date is: ${@time.strftime(’%Y%m%d’,time.gmtime())}' | |
| include file | include file named 'foo', search BBPATH | |
| require file | include file named 'foo', failing if not found exactly where specified | |
| define a task using shell code | ||
| define a task using python code | ||
| add a task | adds a defined task to the list of tasks, with a specific ordering. Zero or more 'before' or 'after' clauses can be used. | |
| associate a subsidiary flag value to a variable | a few subsidiary flag value names are well-defined: 'dirs', 'cleandirs', 'noexec', 'nostamp', 'fakeroot', 'umask', 'deptask', 'rdeptask', 'recdeptask', 'recrdeptask' %%% Flag values appear to be used exclusively with task definitions (i.e. do_sometask) |
3 Additional BitBake-related command[edit]
Bitbake Cheat Sheet Printable
| Syntax | Meaning | Notes |
|---|---|---|
| bitbake-layers | Shows information about layers and recipes | Included in the bitbake/bin directory in openembedded source tree. |
| bitbake-whatchanged <image> | Shows all changes made since the last generation of image | |
| bitbake -g -u depexp <recipe-or-image-name> | Shows dependency information in a graphical interface | |
| bitbake -u goggle st-image-weston | simple graphical interface | This is a simple graphical wrapper over the streaming text output of BitBake. It shows collapsible trees for the logs for sub-tasks for each recipe. |
4 Useful links[edit]
Bitbake clean sstate
How should the sstate-cache directory be deleted in Yocto?, bitbake -c cleansstate <recipe-name>. See: Yocto Reference Manual. There are more tasks for cleaning, which remove sstate cache and even Furthermore you can remove the sstate-cache with bitbake for a specific recipe by calling do_cleansstate like shown below (see do_cleansstate). $ bitbake -c cleansstate recipe Please be aware that the Shared State Cache needs a lot of memory space and it will be growing again to the size it needs during building your images.
[yocto] bitbake -c clean for all recipes, And what about cleanstate or cleanall? clean : roughly the same as removing tmp Then remove tmp, sstate-cache and downloads. Clean up bitbake -c clean foo This command will clean up your tmp dir for the given package. It is very useful if you work on a new .bb recipe. Without it your changes to the recipe may not work. Working with tmp/work. To recompile your source code if you change a line in it. bitbake -f -c compile foo The command above recompiled the code for foo.
The best way to build with Yocto Project and BitBake, BitBake checks SSTATE to see if a recipe does not need to be rebuilt, thereby and -C command for invalidating a stamp (specific clean). Cleans up all the tasks state with regard to the given <pkgname> This option is frequently used during the development of new recipes bitbake -e Displays the internal state of variables used by BitBake
Bitbake clean vs cleansstate
Yocto Project Reference Manual, The easy answer here is rm -rf tmp/. > > And what about cleanstate or cleanall? clean : roughly the same as removing tmp cleansstate : roughly Removes all output files, shared state (sstate) cache, and downloaded source files for a target (i.e. the contents of DL_DIR). Essentially, the do_cleanall task is identical to the do_cleansstate task with the added removal of downloaded source files. You can run this task using BitBake as follows: $ bitbake -c cleanall recipe
[yocto] bitbake -c clean for all recipes, No, cleanall does not clean dependencies. eg bitbake -c cleanall core-image-minimal. only removes the output of that named recipe. Clean up bitbake -c clean foo This command will clean up your tmp dir for the given package. It is very useful if you work on a new .bb recipe. Without it your changes to the recipe may not work. Working with tmp/work. To recompile your source code if you change a line in it. bitbake -f -c compile foo The command above recompiled the code for foo.
Yocto: : does bitbake cleanall ,cleans dependencies as well, bitbake -c listtasks <recipe>. fetchall Fetch all source; build · devshell · package_write_ipk · cleansstate Clean the build/sstate-cache directory When your done, clean up: bitbake linux-yocto -c cleansstate Finding recipies. devtool search recipe-name Search for recipe names. bitbake-layers show-layers
Bitbake dependency graph
What I Wish I'd Known – Yocto Project, A dependency graph shows dependencies between recipes, tasks, and targets. You can use the “-g” option with BitBake to generate this graph. When you start
Inspect DEPENDS, How do do I inspect dependencies for recipes? You can get the dependency graph information using: bitbake -g <packagename> && less
How to determine dependencies of recipes in yocto?, You can use the following command which opens up a Dependency explorer that displays dependencies on the packages: bitbake -g
Bitbake cleanall world
Yocto: : does bitbake cleanall ,cleans dependencies as well, only removes the output of that named recipe. What i usually do to clean 'everything' is running cleanall on the receipe 'world': bitbake -c cleanall No, cleanall does not clean dependencies. eg. bitbake -c cleanall core-image-minimal only removes the output of that named recipe. What i usually do to clean 'everything' is running cleanall on the receipe 'world': bitbake -c cleanall world If that fails because of unresolvable packages like that:
[yocto] how to clean all?, You may be thinking of 'bitbake -c cleanall recipename' which cleans the working directory, sstate packages and downloaded files for the bitbake <module> -f -c cleanall How to clean an image: bitbake <image> - c cleanall How to load the packages to a local hard drive: bitbake <image> -f -c fetchall How to get the list of tasks: bitbake <image> -f -c listtasks How to display all appends: bitbake-layers show-appends How to display all layers: bitbake <recipe-or-image-name> -g -u
Yocto Project Reference Manual, bitbake clean sstate bitbake clean vs cleansstate bitbake dependency graph bitbake cleanall world bitbake clean sysroot bitbake cheat sheet yocto rebuild rootfs Bitbake iterates through each target it needs to build and resolves them and their dependencies using this process. Understanding how providers are chosen is made complicated by the fact that multiple versions might exist for a given provider. BitBake defaults to the highest version of a provider.
Bitbake clean sysroot
how to clean the libs and headers files installed in yocto sysrootdir , I'm afraid that Yocto does not provide any build in solution for cleaning files from shared headers area like tmp/sysroots/. Indeed please familiar $ bitbake -b foo.bb -c clean This means anything that recipe 'b' puts into sysroot is available when recipe 'a' is configuring itself.
staging: Ensure a clean recipe sysroot removes , Ensure a clean recipe sysroot removes addto_recipe_sysroot stamps bitbake -c devshell nodejs-native; never result in npm in the sysroot Use bitbake sysroot to find provider: You can also use this sysroot to find the provider of a particular file. For example, if you want to use blkid functionality and you don’t know the yocto/bitbake provider for this libraries or binaries to include into your recipe, you can grep for the header/library/binary inside “tmp/sysroots/<MACHINE
Solved: YOCTO project clean, Solved: How can I clean YOCTO build directory? I tried 'bitbake -c cleanall core-image-minimal' but it has no effect. rm -fr tmp/sysroots. If you want to clean out The following command runs the clean task on the foo.bb recipe file: $ bitbake -b foo.bb -c clean
Bitbake cheat sheet
Bitbake Cheat Sheet. From eLinux.org. Here are some quick notes on bitbake syntax and rules. For an exhaustive list of functionality, and longer descriptions,
bitbake -f -c compile foo The command above recompiled the code for foo. To build the ipk use the command below bitbake foo Check Recipe Version bitbake -s | grep foo Check Bitbake Version bitbake --version Run Bitbake A Little at a Time bitbake -c listtasks foo # lists the tasks bitbake -c taskname foo Show build environment bitbake -e foo
BitBake cheat sheet. Last edited 232 days ago; BitBake cheat sheet , . Contents. 1 Command-line options; 2.bb file syntax; 3 Additional BitBake-related command; 4
Yocto rebuild rootfs
After first time building “altera-image-minimal”, it produced rootfs with modules version contained “-dirty” at the end. However kernel built from sources in local directory doesn’t have “-dirty” in version string. Thus kernel can’t run with produced rootfs. I opened directory which contains Yocto’s copy of Linux sources
I have integrated a makefile based project into custom recipes within yocto but there was an issue: do_rootfs failed. Please find library source and I try to integrate this library into oe-core: h
Bitbake Cheat Sheet
Occasionally, one may want to change the root filesystem, and then rebuild the image using Yocto as per the standard SDK. The SDK manual, goes through the steps necessary in Chapter 2 of the QorIQ_SDK_Infocenter.pdf document. In the following examples I assume you've already installed the SDK, and set up the host environment.
Bitbake build single recipe
Working with a single recipe, Bitbake can be instructed to deal directly with a single recipe file by passing it via the -b parameter. This option takes the recipe as a parameter and instructs bitbake to process the named recipe only. Note that this ignores any dependencies that are in the recipe, so these must have already been built previously. Bitbake can be instructed to deal directly with a single recipe file by passing it via the -b parameter. This option takes the recipe as a parameter and instructs bitbake to process the named recipe only. Note that this ignores any dependencies that are in the recipe, so these must have already been built previously.
Bitbake cheat sheet, Feel free to add all your usual bitbake commands to this page. Start a build. To get a It is very useful if you work on a new .bb recipe. Without 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 the name of the package without any extension or version number. Clean up bitbake -c clean foo This command will clean up your tmp dir for the given package. It is very useful if you work on a new .bb recipe.
Bitbake Cheat Sheet Free
What I Wish I'd Known – Yocto Project, You can build and run a specific task for a specific package (including devshell) or even a single recipe. When developers first start using the Yocto Project, the Build one recipe. To run all tasks for our second recipe we simply call bitbake second. Execute one task. We could also run a specific task for a recipe. Say we want only to run the mypatch task for the second recipe. This can be done by applying the command bitbake -c mypatch second. Build everything
Bitbake Cheat Sheet Download
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