How to know distro features

yocto imx6
Ravi A picture Ravi A · Aug 24, 2018 · Viewed 8k times · Source

I am building image for NXP board using yocto. I could see different distros say "x11, wayland, fb, directfb" etc.

In the conf files for these distros I could see "DISTRO_FEATURES_remove" of other distros. Say in x11 distro conf file "DISTRO_FEATURES_remove="wayland"" is there.

I need to check what features provided by each distro. Say I need to check the features provided by wayland and x11 distros.

Can you guide to check in yocto source folder for the features provided by these distros.

Answer

Peter Buelow picture Peter Buelow · Aug 24, 2018

I think you are asking, "how do I know what's in DISTRO_FEATURES for a given distro?" If so, DISTRO_FEATURES is a variable that is set in a configuration and loaded/overloaded as needed to drive contents you want to add to your system. Various recipes check the contents of DISTRO_FEATURES to enable/disable different features. You can do the same to test as needed.

For example, some recipes may use the following to check to see if the configuration has enabled a features. Our custom linux kernel recipe uses the following to specify specific configuration files for the recipe.

{@bb.utils.contains('DISTRO_FEATURES', 'bluez5', 'file://bluetooth.cfg', '', d)} \

Generically, you turn features on or off by specifying contents for DISTRO_FEATURES on your own.

https://www.yoctoproject.org/docs/2.1/mega-manual/mega-manual.html#var-DISTRO_FEATURES

If you need to see the contents of DISTRO_FEATURES from the command line

bitbake -e imagename | grep "^DISTRO_FEATURES"

Related questions

How to remove a specific package from yocto

I am building yocto for a specific hardware (imx6 saber-sdb from nxp). I want to remove a particular (chromium) package from the build process. so that chromium package will not be downloaded, compiled and will not be part of the …

Read More
Yocto: how to remove/blacklist some dependency from RDEPENDS of a package?

I have a custom machine layer based on https://github.com/jumpnow/meta-wandboard. I've upgraded the kernel to 4.8.6 and want to add X11 to the image. I'm modifying to image recipe (console-image.bb). Since wandboard is based on i.MX6, …

Read More
bitbake SRC_URI file://

If I have a tarball, helloworld.tar.gz in a local directory, say /home/user/tarballs/, how can I make my bitbake recipe fetch from that directory? my helloworld.bb is SECTION = "examples" LICENSE = "Proprietary" LIC_FILES_CHKSUM = "file://COPYING; …

Read More