Useful bitbake commands

[#1]

NOTE: Please suggest bitbake commands you find it useful!

bitbake command	Description
bitbake <image>	Bake an image (add -k to continue building even errors are found in the tasks execution)
bitbake <package> -c <task>	Execute a particular package's task. Default Tasks names: fetch, unpack, patch, configure, compile, install, package, package_write, and build. Example: To (force) compiling a kernel and then build, type: $ bitbake  linux-imx -f -c compile $ bitbake linux-imx
bitbake <image > -g -u depexp	Show the package dependency for image. Example: To show all packages included on fsl-image-gui $ bitbake fsl-image-gui -g -u depexp NOTE: This command will open a UI window, so it must be execute on a console inside the host machine (either virtual or native).
bitbake <package> -c  devshell	Open a new shell where with neccesary system values already defined for package
hob	bitbake frontend/GUI.
bitbake <package> -c listtasks	List all tasks for package
bitbake virtual/kernel -c menuconfig	Interactive kernel configuration
bitbake <image> -c fetchall	Fetch sources for a particular image
bitbake-layers show-layers	Show layers
bitbake-layers show-recipes "*-image-*"	Show possible images to bake. Without "*-images-*", it shows ALL recipes
bitbake -g <image> && cat pn-depends.dot | grep -v -e '-native' | grep -v digraph | grep -v -e '-image' | awk '{print $1}' | sort | uniq	Show image's packages
bitbake -g <pkg> && cat pn-depends.dot | grep -v -e '-native' | grep -v digraph | grep -v -e '-image' | awk '{print $1}' | sort | uniq	Show package's dependencies
bitbake –v <image> 2>&1 | tee image_build.log	Print (on console) and store verbose baking
bitbake -s | grep <pkg>	Check if certain package is present on current Yocto Setup

[bonzo]

Seems I can't use bitbake-layers with Daisy.  Can you verify this?

[OtavioSalvador]

Yes, it can be used for sure.

Are you getting an error?

In my case, for example, we have:

otavio@nano ~/hacking/ossystems/yocto/build % bitbake-layers show-layers

layer                 path                                      priority

==========================================================================

meta                  /home/otavio/hacking/ossystems/yocto/sources/poky/meta  5

meta-yocto            /home/otavio/hacking/ossystems/yocto/sources/poky/meta-yocto  5

meta-yocto-bsp        /home/otavio/hacking/ossystems/yocto/sources/poky/meta-yocto-bsp  5

meta-oe               /home/otavio/hacking/ossystems/yocto/sources/meta-openembedded/meta-oe  1

meta-fsl-arm          /home/otavio/hacking/ossystems/yocto/sources/meta-fsl-arm  5

meta-fsl-arm-extra    /home/otavio/hacking/ossystems/yocto/sources/meta-fsl-arm-extra  4

meta-fsl-demos        /home/otavio/hacking/ossystems/yocto/sources/meta-fsl-demos  4

meta-qt5              /home/otavio/hacking/ossystems/yocto/sources/meta-qt5  7

meta-ossystems        /home/otavio/hacking/ossystems/yocto/sources/meta-ossystems  9

meta-ossystems-base   /home/otavio/hacking/ossystems/yocto/sources/meta-ossystems-base  8

[hchaumette]

There is a typo in the penultimate command, it should be "2>&1" instead of "2&>1".

[jasonl]

There are even more tasks you can run like: configme, kernel_configcheck, compile_kernelmodules, clean, cleanall, cleansstate etc. I find myself the compile_kernelmodules is very useful for compiling the kernel drivers. You can take the driver and compile outside individually but most of them has lot of dependency, so...

[csoapy]

LeonardoSandovalGonzalez‌ bitbake <image> -c fetchall not works for new version yocto, see:FutureMigrationGuide - Yocto Project 

          -c fetchall is replaced by --runall=fetch 

The bitbake -g command changed since yocto 2.3:

BitBake "-g" Output Changes: The package-depends.dot and pn-depends.dot files as previously generated using the bitbake -g command have been removed. A recipe-depends.dot file is now generated as a collapsed version of task-depends.dot instead.