FutureMigrationGuide

This page should be used to keep track of items which should be added to the migration guide in the YP Reference Manual. It's a living document for the life of a development cycle and by M4 should represent a significant proportion of items that are worthy of note in the migration guide. Once the migration guide for a release has been completed the contents of this page should be cleared out.

2.4 Migration Guide items

• ROOTFS_PKGMANAGE_BOOTSTRAP is gone, and any references to it should be removed.

Memory resident mode

Bitbake's previous "memory resident mode" has been replaced by a persistent mode which is available in bitbake's default operation. As such, you only need to set BB_SERVER_TIMEOUT to a timeout (in seconds) and BitBake's server will stay resident for that amount of time between bitbake invocations. The oe-init-build-env-memres script has been removed as a separate environment setup script is no longer needed.

Removed recipes

The following recipes have been removed in the 2.4 release:

• acpitests: recipe not being maintained
• autogen-native: with grub no longer requiring it, there's nothing else in oe-core or meta-oe that does.
• bdwgc: moved to meta-oe as nothing in OpenEmbedded-Core needs it in any longer.
• byacc - was only needed by rpm 5.x and has been moved to meta-oe
• gcc (5.4): drop 5.4 series in favour of 6.3 / 7.2
• gnome-common: deprecated upstream and no longer needed
• go-bootstrap-native: remove recipe as go 1.9 can do its own bootstrapping
• guile: was only needed by autogen-native and remake, so no longer needed
• libclass-isa-perl: was previously needed for LSB 4, no longer needed
• libdumpvalue-perl: was previously needed for LSB 4, no longer needed
• libenv-perl: was previously needed for LSB 4, no longer needed
• libfile-checktree-perl: was previously needed for LSB 4, no longer needed
• libi18n-collate-perl: was previously needed for LSB 4, no longer needed
• libiconv: this was only needed for uclibc which was removed in the previous release - glibc and musl have their own implementations. meta-mingw still needs it so it has been moved there.
• libpng12: only previously needed for LSB; current libpng is 1.6.x.
• libpod-plainer-perl: was previously needed for LSB 4, no longer needed
• linux-yocto (4.1): removed in favour of 4.4, 4.9, 4.10 and 4.12
• mailx: only previously needed for LSB compatibility, with upstream being defunct now for a long time.
• mesa (git version only) - has gone stale with respect to the release version
• ofono (git version only) - has gone stale with respect to the release version
• portmap: obsolete - superseded by rpcbind.
• python3-pygpgme: old and unmaintained; was previously required only by dnf but that has now switched to official gpgme python bindings.
• python-async: removed in favour of python 3 version
• python-gitdb: removed in favour of python 3 version
• python-git: removed in favour of python 3 version
• python-mako: removed in favour of python 3 version
• python-pexpect: removed in favour of python 3 version
• python-ptyprocess: removed in favour of python 3 version
• python-pycurl: nothing is using this in OpenEmbedded-Core (or meta-oe)
• python-six: removed in favour of python 3 version
• python-smmap: removed in favour of python 3 version
• remake: using remake as the provider of virtual/make has been broken for some time. No longer needed in OpenEmbedded-Core.

Other changes (yet to be categorised / completed)

• python3: add python3 metapackage
• binutils: package libbfd seperately
• classes/buildhistory: make a single commit per build
• python-3.5: Move bz2.py, lzma.py and _compression.py from python3-misc to python3-compression
• x86-base.inc: Don't add live to IMAGE_FSTYPES, default instead
• image_types.bbclass: get rid of IMAGE_DEPENDS
• bitbake: cooker: Use multiple BuildStarted events for multiconfig
• security_flags.inc: Delete pinnings for SECURITY_NO_PIE_CFLAGS
• util-linux: fix "su -" and package su separately
• bitbake: tinfoil: add a parse_recipes() function
• bsp/help: include a warning showing deprecation of create-layer plugin
• image: Convert vmdk/vdi/qcow2 to strict CONVERSION_CMD types
• insane: remove unsafe-references-in-scripts check
• openssl10: rename back to openssl and make it the default via PREFERRED_VERSION
• initscripts: split sushell into sub package
• bitbake: cooker: Change to consistent prefile/postfile handling
• insane.bbclass: Warn if ${COREBASE}/LICENSE is used
• util-linux: split out ionice into its own package
• glib-2.0: recommend shared-mime-info
• go: split out go-runtime into separate recipe
• kernel: Move Device Tree support to kernel.bbclass
• README.qemu: Add from meta-yocto as it belongs in core
• meta-yocto: Drop meta-yocto directory
• meta-yocto: Restructure and tidy up READMEs
• conf: add maintainers.inc from meta-poky
• conf: remove maintainers.inc, now in oe-core
• util-linux: package switch_root separately