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    clang-tidy tool can insert missing override keyword as a macro so that missing [optional] virtual identifiers can be easily added.

    build otb with clang 3.8 and use cmake option CMAKE_EXPORT_COMPILE_COMMANDS=ON. Most modules and third parties have been activated.

    #Save override occurences in otb code
    cd src/Modules ; grep -nR "override" * > ~/temporary/override_otb.txt

    #Run clang modernize check using utility script which allow to process the code in parallel
    python run-clang-tidy.py -clang-tidy-binary ~/software/clang+llvm-3.8.0-x86_64-linux-gnu-ubuntu-14.04/bin/clang-tidy -checks=-*,modernize-use-override -header-filter=/home/grizonnetm/projets/otb/src/OTB/Modules/.*/.*/include/.* -j8 -fix -p ~/projets/otb/bin/release/OTB-clang3.8/ ~/projets/otb/src/OTB/Modules/*/*/src/*.cxx ~/projets/otb/src/OTB/Examples/*/*.cxx ~/projets/otb/src/OTB/Modules/*/*/test/*.cxx > ~/temporary/run-clang-tidy-log.txt

    #Replace override by ITK macro (to maintain compat with c++98)
    find . -type f -print -name "*.h" -o -name "*.txx" |xargs perl -pi -e 's/\ override/\ ITK_OVERRIDE/g'

This is a big one without much harm. It fixes incorrect spelling
and grammer when packaging OTB 5.0.0 and 5.2.0 for Debian.
Most of these changes are done by developers at DebianGIS.
For more info, I include the original patch header below.
Description: Fix some spelling errors to silence lintian
enabling  to concentrate on the real problem.
Author: Andreas Tille <tille@debian.org>
Author: Rashad Kanavath <rashad.kanavath@c-s.fr>
Author: Bas Couwenberg <sebastic@xs4all.nl>
Last-Update: 2015-12-22