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 =encoding utf8
 
 =head1 NAME
 
 clazy - a static source code analyzer for Qt5-based C++.
 
 =head1 SYNOPSIS
 
 clazy [option] [clang++-options]
 
 =head1 DESCRIPTION
 
 clazy scans C++/Qt source code looking for issues related to good coding practice with of Qt5.
 In typical use, during code compilation with clazy you will see any such warnings
 printed to the output normally as you would find any compiler warnings.
 
 clazy has the ability to "fix" the offending code in some cases.  See the B<CLAZY_FIXIT>
 environment variable description below for more information.
 
 =head1 OPTIONS
 
 =over 4
 
 =item B<--help>
 
 Print help message and exit.
 
 =item B<--version>
 
 Print version information and exit.
 
 =item B<--list>
 
 Print a list of all available checkers, arranged by level.
 
 =item B<--explain>
 
 Print explanations for all checkers.
 
 =item B<--explain> <regexp>
 
 Print explanations for the checkers matching the specified regular expression.
 
 =back
 
 Any of the options above will print the requested information and then exit.
 
 =over 4
 
 =item B<--qt4compat>
 
 This option runs clazy in Qt4 compatibility mode.
 Use this when your source code can build with Qt4 and Qt5 in order to easily
 suppress issues that cannot be fixed due to the requirement of the Qt4 API.
 
 This is a convenience option which is identical to directly passing:
   "-Xclang -plugin-arg-clazy -Xclang qt4-compat"
 
 =back
 
 =over 4
 
 =item B<--qtdeveloper>
 
 B<For Qt developers only.>  This option is special for running clazy on Qt itself.
 Will result in fewer false positives being reported in Qt code.
 
 This is a convenience option which is identical to directly passing:
   "-Xclang -plugin-arg-clazy -Xclang qt-developer"
 
 =back
 
 All other options are passed directly to clang++ and handled from there.
 
 See the clang manual for a list of the very large set of options available,
 but in normal operation you "compile" your code with clazy just as you
 would with clang.
 
 =head1 EXAMPLES
 
 =over 4
 
 =item Print a list of all available checkers, arranged by check level:
 
  % clazy --list
 
  List of available clazy checkers:
 
  Checks from level0. Very stable checks, 100% safe, no false-positives:
     connect-non-signal
     container-anti-pattern
     lambda-in-connect
     mutable-container-key
     qdatetime-utc
     qenums
     qfileinfo-exists
   ....
 
 =item Compile your CMake project with clazy default checkers:
 
  % cmake -DCMAKE_CXX_COMPILER=clazy <other_cmake_options>
  then make as normal
 
 =item Compile your CMake project with level2 checks only (non-Windows):
 
  % export CLAZY_CHECKS="level2"
  % cmake -DCMAKE_CXX_COMPILER=clazy <other_cmake_options>
  then make as normal
 
 =item Compile your qmake project with clazy default checkers:
 
  % qmake -spec linux-clang QMAKE_CXX=clazy <other_qmake_options>
  then make as normal
 
 =back
 
 =head1 IN-CODE DIRECTIVES
 
 clazy supports the following list of in-code directives:
 
 =over 4
 
 =item clazy:skip
 
  Exempt an entire file from all checks.
  No clazy tests will run on the file.
 
 =item clazy:excludeall=<name1[,name2,...,nameN]>
 
  Exempt the entire file from the specified checks.
  The clazy checks name1, etc will not be run on this file.
 
 =item clazy:exclude=<name1[,name2,...,nameN]>
 
  Exclude individual lines from specific checks.
  The clazy checks tests name1, etc. will not be run on the line where
  this directive is found.
 
 =back
 
 Don't include the 'clazy-' prefix.  For example, to disable the "qstring-allocations"
 check, you would write:
 
     // clazy:exclude=qstring-allocations
 
 and not
 
     // clazy:exclude=clazy-qstring-allocations
 
 Also note that these directives must be C++ style comments; C style comments are ignored.
 
 =head1 ENVIRONMENT
 
 B<CLAZY_CHECKS> - a comma-separated list of checkers or check-sets to run.
 By default, all checkers from the "level0" and "level1" check-sets will run.
 
 B<Examples:>
 
 =over 4
 
 =item 1. Enables the 2 checkers "unneeded-cast" and "virtual-call-ctor" only:
 
 % export CLAZY_CHECKS="unneeded-cast,virtual-call-ctor"
 
 =item 2. Enables all checks from the "level0" check-set, except for "qenums":
 
 % export CLAZY_CHECKS="level0,no-qenums"
 
 =item 3. Enables all checks from the "level0" check-set along with the "detaching-temporary" checker:
 
 % export CLAZY_CHECKS="level0,detaching-temporary"
 
 =back
 
 B<CLAZY_FIXIT> - some checkers are able to automatically re-write your source code whenever
 it encounters code it can "fix".  Enable this "fixit" feature by setting this variable
 to the name of the checker with a "fixit" capability.
 
 B<Examples:>
 
 =over 4
 
 =item 1. Fix qlatin1string allocations:
 
 % export CLAZY_FIXIT="fix-qlatin1string-allocations"
 
 =item 2. Fix old-style (simple cases) connect statements:
 
 % export CLAZY_FIXIT=fix-old-style-connect
 
 More documentation is provided when running clazy with the B<--explain> command line option.
 
 Also note that only 1 fixit checker can be run at a time.
 
 =back
 
 B<CLAZY_EXTRA_OPTIONS> - some checkers can adapt their behavior depending on the value
 of this environment variable.  More documentation is provided when running clazy with
 the B<--explain> command line option.
 
 B<CLAZY_NO_WERROR> - if this is variable is set, clazy will not treat warnings as errors,
 even if the -Werror compiler option is specified.  This is useful if you want to use -Werror
 only for the regular gcc/clang warnings but not for clazy warnings.
 
 B<CLAZY_CHECKS_AS_ERRORS> - comma-separated list of checks that will be promoted
 to compiler errors. Note that this does not enable the checks specified here.
 
 B<CLAZY_IGNORE_DIRS> - A regular expression for paths to exclude from processing.
 For example:
 
 % export CLAZY_IGNORE_DIRS=".*my_qt_folder.*"
 
 =head1 COPYRIGHT AND LICENSE
 
 Copyright (C) 2015-2017 Klaralvdalens Datakonsult AB, a KDAB Group company, <info@kdab.com>
 
 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.
 
 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
 License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
 =head1 SEE ALSO
 
  clang(1)
  https://www.kdab.com/use-static-analysis-improve-performance
 
 =head1 AUTHORS
 
  Sergio Martins <sergio.martins@kdab.com>
  Laurent Montel <laurent.montel@kdab.com>
  Allen Winter <allen.winter@kdab.com>
  Albert Astals Cid <aacid@kde.org>
  Aurélien Gâteau <agateau@kde.org>
  Kevin Funk <kevin.funk@kdab.com>
  Hannah von Reth <hannah.vonreth@kdab.com>
  Volker Krause <volker.krause@kdab.com>
  Christian Ehrlicher <Ch.Ehrlicher@gmx.de>
  Mathias Hasselmann <mathias.hasselmann@kdab.com>
 
 =cut