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Compiler plugins.
== Overview ==
This directory contains code for compiler plugins. These are used to perform
additional actions during compilation (such as additional warnings) and
also to perform mass code refactoring.
Currently only the Clang compiler is supported (http://wiki.documentfoundation.org/Development/Clang).
== Usage ==
Compiler plugins are enabled automatically by --enable-dbgutil if Clang headers
are found or explicitly using --enable-compiler-plugins.
== Functionality ==
There are two kinds of plugin actions:
- compile checks - these are run during normal compilation
- rewriters - these must be run manually and modify source files
Each source has a comment saying whether it's compile check or a rewriter
and description of functionality.
=== Compile checks ===
Used during normal compilation to perform additional checks.
All warnings and errors are marked '[loplugin]' in the message.
=== Rewriters ===
Rewriters analyse and possibly modify given source files.
Usage: make COMPILER_PLUGIN_TOOL=<rewriter_name>
Additional optional make arguments:
- it is possible to also pass FORCE_COMPILE_ALL=1 to make to trigger rebuild of all source files,
even those that are up to date.
- UPDATE_FILES=<scope> - limits which modified files will be actually written back with the changes
- mainfile - only the main .cxx file will be modifed (default)
- all - all source files involved will be modified (possibly even header files from other LO modules),
3rd party header files are however never modified
- <module> - only files in the given LO module (toplevel directory) will be modified (including headers)
Modifications will be written directly to the source files.
== Code documentation / howtos ==
http://wiki.documentfoundation.org/Clang_plugins
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