D24617: Use ECMGenerateExportHeader to manage deprecated API better

[Friedrich W. H. Kossebau]

kossebau created this revision.
kossebau added reviewers: Frameworks, aacid.
Herald added projects: Frameworks, Baloo.
Herald added subscribers: Baloo, kde-frameworks-devel.
kossebau requested review of this revision.

REVISION SUMMARY
  Allows
  
  - projects linking to Baloo to hide deprecated API up to a given version or silence deprecation warnings after a given version, using
    - -DBALOO_CORE_DISABLE_DEPRECATED_BEFORE_AND_AT
    - -DBALOO_CORE_NO_DEPRECATED
    - -DBALOO_CORE_DEPRECATED_WARNINGS_SINCE
    - -DBALOO_CORE_NO_DEPRECATED_WARNINGS
  
      or
    - -DKF_DISABLE_DEPRECATED_BEFORE_AND_AT
    - -DKF_NO_DEPRECATED
    - -DKF_DEPRECATED_WARNINGS_SINCE
    - -DKF_NO_DEPRECATED_WARNINGS
  - to build Baloo optionally with deprecated API excluded from the build, using "EXCLUDE_DEPRECATED_BEFORE_AND_AT" cmake argument.

TEST PLAN
  Builds with EXCLUDE_DEPRECATED_BEFORE_AND_AT set to 0, 5.55.0,
  CURRENT.

REPOSITORY
  R293 Baloo

BRANCH
  useECMGenerateExportHeader

REVISION DETAIL
  https://phabricator.kde.org/D24617

AFFECTED FILES
  CMakeLists.txt
  src/lib/CMakeLists.txt
  src/lib/resultiterator.cpp
  src/lib/resultiterator.h

To: kossebau, #frameworks, aacid
Cc: kde-frameworks-devel, #baloo, hurikhan77, lots0logs, LeGast00n, fbampaloukas, GB_2, domson, ashaposhnikov, michaelh, astippich, spoorun, ngraham, bruns, abrahams
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