[PATCH v2 0/2] add an SDK_FEATURES lever

[Trevor Woerner <twoerner@gmail.com>]

SDK contents are close to all-or-nothing today. The one lever that
exists, SDK_TOOLCHAIN_LANGS, has the right shape but only ever covered
languages.

Add SDK_FEATURES, in the spirit of DISTRO_FEATURES and IMAGE_FEATURES,
and fold SDK_TOOLCHAIN_LANGS into it. BB_RENAMED_VARIABLES keeps the old
name working.

Every SDK_FEATURES test resolves inside TOOLCHAIN_HOST_TASK and
TOOLCHAIN_TARGET_TASK, which are packagegroup lists read at populate_sdk
time. Nothing in a compiler's configure ever sees SDK_FEATURES, so
changing it rebuilds no toolchain and two SDKs with different features
share everything underneath. That property is the point of the design and
the rest of this work depends on it.

This changes no existing SDK: SDK_FEATURES defaults to empty, and
BB_RENAMED_VARIABLES maps SDK_TOOLCHAIN_LANGS onto it so configurations
still using the old name keep working.

Changes in v2:
 - autobuilder.conf keeps += rather than switching to :append

Signed-off-by: Trevor Woerner <twoerner@gmail.com>

Trevor Woerner (2):
  bitbake.conf: add an SDK_FEATURES lever
  sdk: fold SDK_TOOLCHAIN_LANGS into SDK_FEATURES

 meta/classes-recipe/populate_sdk_base.bbclass | 21 +++++++++----------
 meta/conf/bitbake.conf                        |  2 ++
 meta/conf/documentation.conf                  |  1 +
 .../yocto-autobuilder/autobuilder.conf        |  2 +-
 .../packagegroups/packagegroup-core-sdk.bb    |  2 +-
 5 files changed, 15 insertions(+), 13 deletions(-)

-- 
2.50.0.173.g8b6f19ccfc3a