Help: Add new section for CPack generators

The documentation for CPack generators previously lived in their
respective internal CMake modules. This setup was misleading,
because it implied that you should include the modules in your own
code, which is not the case. Moving the documentation into a
separate section does a better job of hiding the internal modules,
which are just an implementation detail. The generator documentation
has also been modified to remove any references to the module name.

The CPackIFW module is a special exception: since it has user-facing
macros, the documentation for these macros has been kept in the module
page, while all other documentation related to the IFW generator has
been moved into the new section.

To make it easier to find the new documentation, the old help pages
for the CPack*.cmake modules have not been deleted, but have been
replaced with a link to their respective help page in the new
documentation section.

1 files changed, 335 insertions, 0 deletions

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+CPack IFW Generator
+-------------------
+
+See :module:`CPackIFW` for details on the CPackIFW module.
+
+.. _QtIFW: http://doc.qt.io/qtinstallerframework/index.html
+
+
+Overview
+^^^^^^^^
+
+CPack ``IFW`` generator helps you to create online and offline
+binary cross-platform installers with a graphical user interface.
+
+CPack IFW generator prepares project installation and generates configuration
+and meta information for QtIFW_ tools.
+
+The QtIFW_ provides a set of tools and utilities to create
+installers for the supported desktop Qt platforms: Linux, Microsoft Windows,
+and Mac OS X.
+
+You should also install QtIFW_ to use CPack ``IFW`` generator.
+
+Hints
+^^^^^
+
+Generally, the CPack ``IFW`` generator automatically finds QtIFW_ tools,
+but if you don't use a default path for installation of the QtIFW_ tools,
+the path may be specified in either a CMake or an environment variable:
+
+.. variable:: CPACK_IFW_ROOT
+
+ An CMake variable which specifies the location of the QtIFW_ tool suite.
+
+ The variable will be cached in the ``CPackConfig.cmake`` file and used at
+ CPack runtime.
+
+.. variable:: QTIFWDIR
+
+ An environment variable which specifies the location of the QtIFW_ tool
+ suite.
+
+.. note::
+  The specified path should not contain "bin" at the end
+  (for example: "D:\\DevTools\\QtIFW2.0.5").
+
+The :variable:`CPACK_IFW_ROOT` variable has a higher priority and overrides
+the value of the :variable:`QTIFWDIR` variable.
+
+Internationalization
+^^^^^^^^^^^^^^^^^^^^
+
+Some variables and command arguments support internationalization via
+CMake script. This is an optional feature.
+
+Installers created by QtIFW_ tools have built-in support for
+internationalization and many phrases are localized to many languages,
+but this does not apply to the description of the your components and groups
+that will be distributed.
+
+Localization of the description of your components and groups is useful for
+users of your installers.
+
+A localized variable or argument can contain a single default value, and a
+set of pairs the name of the locale and the localized value.
+
+For example:
+
+.. code-block:: cmake
+
+   set(LOCALIZABLE_VARIABLE "Default value"
+     en "English value"
+     en_US "American value"
+     en_GB "Great Britain value"
+     )
+
+Variables
+^^^^^^^^^
+
+You can use the following variables to change behavior of CPack ``IFW``
+generator.
+
+Debug
+"""""
+
+.. variable:: CPACK_IFW_VERBOSE
+
+ Set to ``ON`` to enable addition debug output.
+ By default is ``OFF``.
+
+Package
+"""""""
+
+.. variable:: CPACK_IFW_PACKAGE_TITLE
+
+ Name of the installer as displayed on the title bar.
+ By default used :variable:`CPACK_PACKAGE_DESCRIPTION_SUMMARY`.
+
+.. variable:: CPACK_IFW_PACKAGE_PUBLISHER
+
+ Publisher of the software (as shown in the Windows Control Panel).
+ By default used :variable:`CPACK_PACKAGE_VENDOR`.
+
+.. variable:: CPACK_IFW_PRODUCT_URL
+
+ URL to a page that contains product information on your web site.
+
+.. variable:: CPACK_IFW_PACKAGE_ICON
+
+ Filename for a custom installer icon. The actual file is '.icns' (Mac OS X),
+ '.ico' (Windows). No functionality on Unix.
+
+.. variable:: CPACK_IFW_PACKAGE_WINDOW_ICON
+
+ Filename for a custom window icon in PNG format for the Installer
+ application.
+
+.. variable:: CPACK_IFW_PACKAGE_LOGO
+
+ Filename for a logo is used as QWizard::LogoPixmap.
+
+.. variable:: CPACK_IFW_PACKAGE_WATERMARK
+
+ Filename for a watermark is used as QWizard::WatermarkPixmap.
+
+.. variable:: CPACK_IFW_PACKAGE_BANNER
+
+ Filename for a banner is used as QWizard::BannerPixmap.
+
+.. variable:: CPACK_IFW_PACKAGE_BACKGROUND
+
+ Filename for an image used as QWizard::BackgroundPixmap (only used by MacStyle).
+
+.. variable:: CPACK_IFW_PACKAGE_WIZARD_STYLE
+
+ Wizard style to be used ("Modern", "Mac", "Aero" or "Classic").
+
+.. variable:: CPACK_IFW_PACKAGE_WIZARD_DEFAULT_WIDTH
+
+ Default width of the wizard in pixels. Setting a banner image will override this.
+
+.. variable:: CPACK_IFW_PACKAGE_WIZARD_DEFAULT_HEIGHT
+
+ Default height of the wizard in pixels. Setting a watermark image will override this.
+
+.. variable:: CPACK_IFW_PACKAGE_TITLE_COLOR
+
+ Color of the titles and subtitles (takes an HTML color code, such as "#88FF33").
+
+.. variable:: CPACK_IFW_PACKAGE_START_MENU_DIRECTORY
+
+ Name of the default program group for the product in the Windows Start menu.
+
+ By default used :variable:`CPACK_IFW_PACKAGE_NAME`.
+
+.. variable:: CPACK_IFW_TARGET_DIRECTORY
+
+ Default target directory for installation.
+ By default used
+ "@ApplicationsDir@/:variable:`CPACK_PACKAGE_INSTALL_DIRECTORY`"
+
+ You can use predefined variables.
+
+.. variable:: CPACK_IFW_ADMIN_TARGET_DIRECTORY
+
+ Default target directory for installation with administrator rights.
+
+ You can use predefined variables.
+
+.. variable:: CPACK_IFW_PACKAGE_GROUP
+
+ The group, which will be used to configure the root package
+
+.. variable:: CPACK_IFW_PACKAGE_NAME
+
+ The root package name, which will be used if configuration group is not
+ specified
+
+.. variable:: CPACK_IFW_PACKAGE_MAINTENANCE_TOOL_NAME
+
+ Filename of the generated maintenance tool.
+ The platform-specific executable file extension is appended.
+
+ By default used QtIFW_ defaults (``maintenancetool``).
+
+.. variable:: CPACK_IFW_PACKAGE_REMOVE_TARGET_DIR
+
+ Set to ``OFF`` if the target directory should not be deleted when uninstalling.
+
+ Is ``ON`` by default
+
+.. variable:: CPACK_IFW_PACKAGE_MAINTENANCE_TOOL_INI_FILE
+
+ Filename for the configuration of the generated maintenance tool.
+
+ By default used QtIFW_ defaults (``maintenancetool.ini``).
+
+.. variable:: CPACK_IFW_PACKAGE_ALLOW_NON_ASCII_CHARACTERS
+
+ Set to ``ON`` if the installation path can contain non-ASCII characters.
+
+ Is ``ON`` for QtIFW_ less 2.0 tools.
+
+.. variable:: CPACK_IFW_PACKAGE_ALLOW_SPACE_IN_PATH
+
+ Set to ``OFF`` if the installation path cannot contain space characters.
+
+ Is ``ON`` for QtIFW_ less 2.0 tools.
+
+.. variable:: CPACK_IFW_PACKAGE_CONTROL_SCRIPT
+
+ Filename for a custom installer control script.
+
+.. variable:: CPACK_IFW_PACKAGE_RESOURCES
+
+ List of additional resources ('.qrc' files) to include in the installer
+ binary.
+
+ You can use :command:`cpack_ifw_add_package_resources` command to resolve
+ relative paths.
+
+.. variable:: CPACK_IFW_PACKAGE_FILE_EXTENSION
+
+ The target binary extension.
+
+ On Linux, the name of the target binary is automatically extended with
+ '.run', if you do not specify the extension.
+
+ On Windows, the target is created as an application with the extension
+ '.exe', which is automatically added, if not supplied.
+
+ On Mac, the target is created as an DMG disk image with the extension
+ '.dmg', which is automatically added, if not supplied.
+
+.. variable:: CPACK_IFW_REPOSITORIES_ALL
+
+ The list of remote repositories.
+
+ The default value of this variable is computed by CPack and contains
+ all repositories added with command :command:`cpack_ifw_add_repository`
+ or updated with command :command:`cpack_ifw_update_repository`.
+
+.. variable:: CPACK_IFW_DOWNLOAD_ALL
+
+ If this is ``ON`` all components will be downloaded.
+ By default is ``OFF`` or used value
+ from ``CPACK_DOWNLOAD_ALL`` if set
+
+Components
+""""""""""
+
+.. variable:: CPACK_IFW_RESOLVE_DUPLICATE_NAMES
+
+ Resolve duplicate names when installing components with groups.
+
+.. variable:: CPACK_IFW_PACKAGES_DIRECTORIES
+
+ Additional prepared packages dirs that will be used to resolve
+ dependent components.
+
+.. variable:: CPACK_IFW_REPOSITORIES_DIRECTORIES
+
+ Additional prepared repository dirs that will be used to resolve and
+ repack dependent components. This feature available only
+ since QtIFW_ 3.1.
+
+Tools
+"""""
+
+.. variable:: CPACK_IFW_FRAMEWORK_VERSION
+
+ The version of used QtIFW_ tools.
+
+.. variable:: CPACK_IFW_BINARYCREATOR_EXECUTABLE
+
+ The path to "binarycreator" command line client.
+
+ This variable is cached and may be configured if needed.
+
+.. variable:: CPACK_IFW_REPOGEN_EXECUTABLE
+
+ The path to "repogen" command line client.
+
+ This variable is cached and may be configured if needed.
+
+.. variable:: CPACK_IFW_INSTALLERBASE_EXECUTABLE
+
+ The path to "installerbase" installer executable base.
+
+ This variable is cached and may be configured if needed.
+
+.. variable:: CPACK_IFW_DEVTOOL_EXECUTABLE
+
+ The path to "devtool" command line client.
+
+ This variable is cached and may be configured if needed.
+
+
+Online installer
+^^^^^^^^^^^^^^^^
+
+By default CPack IFW generator makes offline installer. This means that all
+components will be packaged into a binary file.
+
+To make a component downloaded, you must set the ``DOWNLOADED`` option in
+:command:`cpack_add_component`.
+
+Then you would use the command :command:`cpack_configure_downloads`.
+If you set ``ALL`` option all components will be downloaded.
+
+You also can use command :command:`cpack_ifw_add_repository` and
+variable :variable:`CPACK_IFW_DOWNLOAD_ALL` for more specific configuration.
+
+CPack IFW generator creates "repository" dir in current binary dir. You
+would copy content of this dir to specified ``site`` (``url``).
+
+See Also
+^^^^^^^^
+
+Qt Installer Framework Manual:
+
+* Index page:
+  http://doc.qt.io/qtinstallerframework/index.html
+
+* Component Scripting:
+  http://doc.qt.io/qtinstallerframework/scripting.html
+
+* Predefined Variables:
+  http://doc.qt.io/qtinstallerframework/scripting.html#predefined-variables
+
+* Promoting Updates:
+  http://doc.qt.io/qtinstallerframework/ifw-updates.html
+
+Download Qt Installer Framework for you platform from Qt site:
+ http://download.qt.io/official_releases/qt-installer-framework