At OEDAM [1] I took the AR to flesh out some of my ideas for introducing global and per-image settings for switching between development and production builds. The goal is partly to establish common configure options that then can be used by different layers, partly to have some actual useful functionality attached to them already in OE-core.
"development" builds are what a developer does when trying out a distro or working on his own personal device. "production" is what device manufacturer put onto the actual end-user hardware. At OEDAM we already concluded that per-image settings are more useful. However, sometimes a component also has compile-time choices that cannot be changed later on in an image, and indeed I found one example for that (kmod) in OE-core. Therefore I have included "debug-build" DISTRO_FEATURES support. It's a bit similar to manpages.bbclass, but in contrast to that (currently) is meant to be inherited globally - that's partly due to misunderstanding how manpages.bbclass was meant to be used. This can be changed, for now I just want to demonstrate that such a distro feature is not entirely useless, and what effect it could have already in OE-core. In refkit, we also switch globally between development and production builds via .inc files. However, I am in the process of replacing that with the more flexible per-image IMAGE_MODE check. So from my perspective, the IMAGE_MODE is more important and useful than the "debug-build" DISTRO_FEATURE. >From a design perspective, the approach taken here is to let a developer or image define what mode it wants, and default features can be configured accordingly. That alternative would be to continue defining features as before and use the mode to configure QA warnings or errors. But I find that less flexible, and I suspect it would be harder to keep track of what is meant to be usable in which mode. Developers also would have a harder time overriding the defaults. [1] https://www.openembedded.org/wiki/OEDAM_2017 Patrick Ohly (6): build-mode.bbclass: distro-wide debug-build mode basefiles: warn about non-production DISTRO_FEATURES in motd defaultsetup.conf: enable special "debug-build" DISTRO_FEATURES support image-mode.bbclass: per-image production/development/debug mode image.bbclass: include IMAGE_MODE support local.conf.sample: make debug-tweaks depend on IMAGE_MODE meta/classes/build-mode.bbclass | 16 ++++- meta/classes/image-mode.bbclass | 62 ++++++++++++++++- meta/classes/image.bbclass | 3 +- meta/conf/distro/defaultsetup.conf | 2 +- meta/conf/local.conf.sample | 5 +- meta/recipes-core/base-files/base-files_3.0.14.bb | 11 +++- 6 files changed, 96 insertions(+), 3 deletions(-) create mode 100644 meta/classes/build-mode.bbclass create mode 100644 meta/classes/image-mode.bbclass base-commit: 9f9ebf2e1ba6eda48fb5e3f20d4ca5bbabe3dad4 -- git-series 0.9.1 -- _______________________________________________ Openembedded-core mailing list Openembedded-core@lists.openembedded.org http://lists.openembedded.org/mailman/listinfo/openembedded-core
