CMake/Modules/CPack.cmake

# Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.

#[=======================================================================[.rst:
CPack
-----

Configure generators for binary installers and source packages.

Introduction
^^^^^^^^^^^^

The CPack module generates the configuration files ``CPackConfig.cmake``
and ``CPackSourceConfig.cmake``. They are intended for use in a subsequent
run of  the :manual:`cpack <cpack(1)>` program where they steer the generation
of installers or/and source packages.

Depending on the CMake generator, the CPack module may also add two new build
targets, ``package`` and ``package_source``. See the `packaging targets`_
section below for details.

The generated binary installers will contain all files that have been installed
via CMake's :command:`install` command (and the deprecated commands
:command:`install_files`, :command:`install_programs`, and
:command:`install_targets`). Note that the ``DESTINATION`` option of the
:command:`install` command must be a relative path; otherwise installed files
are ignored by CPack.

Certain kinds of binary installers can be configured such that users can select
individual application components to install.  See the :module:`CPackComponent`
module for further details.

Source packages (configured through ``CPackSourceConfig.cmake`` and generated
by the :cpack_gen:`CPack Archive Generator`) will contain all source files in
the project directory except those specified in
:variable:`CPACK_SOURCE_IGNORE_FILES`.

CPack Generators
^^^^^^^^^^^^^^^^

The :variable:`CPACK_GENERATOR` variable has different meanings in different
contexts.  In a ``CMakeLists.txt`` file, :variable:`CPACK_GENERATOR` is a
*list of generators*: and when :manual:`cpack <cpack(1)>` is run with no other
arguments, it will iterate over that list and produce one package for each
generator.  In a :variable:`CPACK_PROJECT_CONFIG_FILE`,
:variable:`CPACK_GENERATOR` is a *string naming a single generator*.  If you
need per-cpack-generator logic to control *other* cpack settings, then you
need a :variable:`CPACK_PROJECT_CONFIG_FILE`.
If set, the :variable:`CPACK_PROJECT_CONFIG_FILE` is included automatically
on a per-generator basis.  It only need contain overrides.

Here's how it works:

* :manual:`cpack <cpack(1)>` runs
* it includes ``CPackConfig.cmake``
* it iterates over the generators given by the ``-G`` command line option,
  or if no such option was specified, over the list of generators given by
  the :variable:`CPACK_GENERATOR` variable set in the ``CPackConfig.cmake``
  input file.
* foreach generator, it then

  - sets :variable:`CPACK_GENERATOR` to the one currently being iterated
  - includes the :variable:`CPACK_PROJECT_CONFIG_FILE`
  - produces the package for that generator

This is the key: For each generator listed in :variable:`CPACK_GENERATOR` in
``CPackConfig.cmake``, cpack will *reset* :variable:`CPACK_GENERATOR`
internally to *the one currently being used* and then include the
:variable:`CPACK_PROJECT_CONFIG_FILE`.

For a list of available generators, see :manual:`cpack-generators(7)`.

.. _`packaging targets`:

Targets package and package_source
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

If CMake is run with the Makefile, Ninja, or Xcode generator, then
``include(CPack)`` generates a target ``package``. This makes it possible
to build a binary installer from CMake, Make, or Ninja: Instead of ``cpack``,
one may call ``cmake --build . --target package`` or ``make package`` or
``ninja package``. The VS generator creates an uppercase target ``PACKAGE``.

If CMake is run with the Makefile or Ninja generator, then ``include(CPack)``
also generates a target ``package_source``. To build a source package,
instead of ``cpack -G TGZ --config CPackSourceConfig.cmake`` one may call
``cmake --build . --target package_source``, ``make package_source``,
or ``ninja package_source``.


Variables common to all CPack Generators
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Before including this CPack module in your ``CMakeLists.txt`` file, there
are a variety of variables that can be set to customize the resulting
installers.  The most commonly-used variables are:

.. variable:: CPACK_PACKAGE_NAME

  The name of the package (or application).  If not specified, it defaults to
  the project name.

.. variable:: CPACK_PACKAGE_VENDOR

  The name of the package vendor. (e.g., "Kitware").  The default is "Humanity".

.. variable:: CPACK_PACKAGE_DIRECTORY

  The directory in which CPack is doing its packaging.  If it is not set
  then this will default (internally) to the build dir.  This variable may
  be defined in a CPack config file or from the :manual:`cpack <cpack(1)>`
  command line option ``-B``.  If set, the command line option overrides the
  value found in the config file.

.. variable:: CPACK_PACKAGE_VERSION_MAJOR

  Package major version.  This variable will always be set, but its default
  value depends on whether or not version details were given to the
  :command:`project` command in the top level CMakeLists.txt file.  If version
  details were given, the default value will be
  :variable:`CMAKE_PROJECT_VERSION_MAJOR`.  If no version details were given,
  a default version of 0.1.1 will be assumed, leading to
  ``CPACK_PACKAGE_VERSION_MAJOR`` having a default value of 0.

.. variable:: CPACK_PACKAGE_VERSION_MINOR

  Package minor version.  The default value is determined based on whether or
  not version details were given to the :command:`project` command in the top
  level CMakeLists.txt file.  If version details were given, the default
  value will be :variable:`CMAKE_PROJECT_VERSION_MINOR`, but if no minor
  version component was specified then ``CPACK_PACKAGE_VERSION_MINOR`` will be
  left unset.  If no project version was given at all, a default version of
  0.1.1 will be assumed, leading to ``CPACK_PACKAGE_VERSION_MINOR`` having a
  default value of 1.

.. variable:: CPACK_PACKAGE_VERSION_PATCH

  Package patch version.  The default value is determined based on whether or
  not version details were given to the :command:`project` command in the top
  level CMakeLists.txt file.  If version details were given, the default
  value will be :variable:`CMAKE_PROJECT_VERSION_PATCH`, but if no patch
  version component was specified then ``CPACK_PACKAGE_VERSION_PATCH`` will be
  left unset.  If no project version was given at all, a default version of
  0.1.1 will be assumed, leading to ``CPACK_PACKAGE_VERSION_PATCH`` having a
  default value of 1.

.. variable:: CPACK_PACKAGE_DESCRIPTION

  A description of the project, used in places such as the introduction
  screen of CPack-generated Windows installers.  If not set, the value of
  this variable is populated from the file named by
  :variable:`CPACK_PACKAGE_DESCRIPTION_FILE`.

.. variable:: CPACK_PACKAGE_DESCRIPTION_FILE

  A text file used to describe the project when
  :variable:`CPACK_PACKAGE_DESCRIPTION` is not explicitly set.  The default
  value for ``CPACK_PACKAGE_DESCRIPTION_FILE`` points to a built-in template
  file ``Templates/CPack.GenericDescription.txt``.

.. variable:: CPACK_PACKAGE_DESCRIPTION_SUMMARY

  Short description of the project (only a few words).  If the
  :variable:`CMAKE_PROJECT_DESCRIPTION` variable is set, it is used as the
  default value, otherwise the default will be a string generated by CMake
  based on :variable:`CMAKE_PROJECT_NAME`.

.. variable:: CPACK_PACKAGE_HOMEPAGE_URL

  Project homepage URL.  The default value is taken from the
  :variable:`CMAKE_PROJECT_HOMEPAGE_URL` variable, which is set by the top
  level :command:`project` command, or else the default will be empty if no
  URL was provided to :command:`project`.

.. variable:: CPACK_PACKAGE_FILE_NAME

  The name of the package file to generate, not including the
  extension.  For example, ``cmake-2.6.1-Linux-i686``.  The default value
  is::

    ${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION}-${CPACK_SYSTEM_NAME}

.. variable:: CPACK_PACKAGE_INSTALL_DIRECTORY

  Installation directory on the target system. This may be used by some
  CPack generators like NSIS to create an installation directory e.g.,
  "CMake 2.5" below the installation prefix.  All installed elements will be
  put inside this directory.

.. variable:: CPACK_PACKAGE_ICON

  A branding image that will be displayed inside the installer (used by GUI
  installers).

.. variable:: CPACK_PACKAGE_CHECKSUM

  An algorithm that will be used to generate an additional file with the
  checksum of the package.  The output file name will be::

    ${CPACK_PACKAGE_FILE_NAME}.${CPACK_PACKAGE_CHECKSUM}

  Supported algorithms are those listed by the
  :ref:`string(\<HASH\>) <Supported Hash Algorithms>` command.

.. variable:: CPACK_PROJECT_CONFIG_FILE

  CPack-time project CPack configuration file.  This file is included at cpack
  time, once per generator after CPack has set :variable:`CPACK_GENERATOR`
  to the actual generator being used.  It allows per-generator setting of
  ``CPACK_*`` variables at cpack time.

.. variable:: CPACK_RESOURCE_FILE_LICENSE

  License to be embedded in the installer.  It will typically be displayed
  to the user by the produced installer (often with an explicit "Accept"
  button, for graphical installers) prior to installation.  This license
  file is NOT added to the installed files but is used by some CPack generators
  like NSIS.  If you want to install a license file (may be the same as this
  one) along with your project, you must add an appropriate CMake
  :command:`install` command in your ``CMakeLists.txt``.

.. variable:: CPACK_RESOURCE_FILE_README

  ReadMe file to be embedded in the installer.  It typically describes in
  some detail the purpose of the project during the installation.  Not all
  CPack generators use this file.

.. variable:: CPACK_RESOURCE_FILE_WELCOME

  Welcome file to be embedded in the installer.  It welcomes users to this
  installer.  Typically used in the graphical installers on Windows and Mac
  OS X.

.. variable:: CPACK_MONOLITHIC_INSTALL

  Disables the component-based installation mechanism.  When set, the
  component specification is ignored and all installed items are put in a
  single "MONOLITHIC" package.  Some CPack generators do monolithic
  packaging by default and may be asked to do component packaging by
  setting ``CPACK_<GENNAME>_COMPONENT_INSTALL`` to ``TRUE``.

.. variable:: CPACK_GENERATOR

  List of CPack generators to use.  If not specified, CPack will create a
  set of options following the naming pattern
  :variable:`CPACK_BINARY_<GENNAME>` (e.g. ``CPACK_BINARY_NSIS``) allowing
  the user to enable/disable individual generators.  If the ``-G`` option is
  given on the :manual:`cpack <cpack(1)>` command line, it will override this
  variable and any ``CPACK_BINARY_<GENNAME>`` options.

.. variable:: CPACK_OUTPUT_CONFIG_FILE

  The name of the CPack binary configuration file.  This file is the CPack
  configuration generated by the CPack module for binary installers.
  Defaults to ``CPackConfig.cmake``.

.. variable:: CPACK_PACKAGE_EXECUTABLES

  Lists each of the executables and associated text label to be used to
  create Start Menu shortcuts.  For example, setting this to the list
  ``ccmake;CMake`` will create a shortcut named "CMake" that will execute the
  installed executable ``ccmake``.  Not all CPack generators use it (at least
  NSIS, WIX and OSXX11 do).

.. variable:: CPACK_STRIP_FILES

  List of files to be stripped.  Starting with CMake 2.6.0,
  ``CPACK_STRIP_FILES`` will be a boolean variable which enables
  stripping of all files (a list of files evaluates to ``TRUE`` in CMake,
  so this change is compatible).

.. variable:: CPACK_VERBATIM_VARIABLES

  If set to ``TRUE``, values of variables prefixed with ``CPACK_`` will be
  escaped before being written to the configuration files, so that the cpack
  program receives them exactly as they were specified.  If not, characters
  like quotes and backslashes can cause parsing errors or alter the value
  received by the cpack program.  Defaults to ``FALSE`` for backwards
  compatibility.

Variables for Source Package Generators
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

The following CPack variables are specific to source packages, and
will not affect binary packages:

.. variable:: CPACK_SOURCE_PACKAGE_FILE_NAME

  The name of the source package.  For example ``cmake-2.6.1``.

.. variable:: CPACK_SOURCE_STRIP_FILES

  List of files in the source tree that will be stripped.  Starting with
  CMake 2.6.0, ``CPACK_SOURCE_STRIP_FILES`` will be a boolean
  variable which enables stripping of all files (a list of files evaluates
  to ``TRUE`` in CMake, so this change is compatible).

.. variable:: CPACK_SOURCE_GENERATOR

  List of generators used for the source packages.  As with
  :variable:`CPACK_GENERATOR`, if this is not specified then CPack will
  create a set of options (e.g. ``CPACK_SOURCE_ZIP``) allowing
  users to select which packages will be generated.

.. variable:: CPACK_SOURCE_OUTPUT_CONFIG_FILE

  The name of the CPack source configuration file.  This file is the CPack
  configuration generated by the CPack module for source installers.
  Defaults to ``CPackSourceConfig.cmake``.

.. variable:: CPACK_SOURCE_IGNORE_FILES

  Pattern of files in the source tree that won't be packaged when building
  a source package.  This is a list of regular expression patterns (that
  must be properly escaped), e.g.,
  ``/CVS/;/\\.svn/;\\.swp$;\\.#;/#;.*~;cscope.*``

Variables for Advanced Use
^^^^^^^^^^^^^^^^^^^^^^^^^^

The following variables are for advanced uses of CPack:

.. variable:: CPACK_CMAKE_GENERATOR

  What CMake generator should be used if the project is a CMake
  project.  Defaults to the value of :variable:`CMAKE_GENERATOR`.  Few users
  will want to change this setting.

.. variable:: CPACK_INSTALL_CMAKE_PROJECTS

  List of four values that specify what project to install.  The four values
  are: Build directory, Project Name, Project Component, Directory.  If
  omitted, CPack will build an installer that installs everything.

.. variable:: CPACK_SYSTEM_NAME

  System name, defaults to the value of :variable:`CMAKE_SYSTEM_NAME`,
  except on Windows where it will be ``win32`` or ``win64``.

.. variable:: CPACK_PACKAGE_VERSION

  Package full version, used internally.  By default, this is built from
  :variable:`CPACK_PACKAGE_VERSION_MAJOR`,
  :variable:`CPACK_PACKAGE_VERSION_MINOR`, and
  :variable:`CPACK_PACKAGE_VERSION_PATCH`.

.. variable:: CPACK_TOPLEVEL_TAG

  Directory for the installed files.

.. variable:: CPACK_INSTALL_COMMANDS

  Extra commands to install components.  The environment variable
  ``CMAKE_INSTALL_PREFIX`` is set to the temporary install directory
  during execution.

.. variable:: CPACK_INSTALL_SCRIPTS

  Extra CMake scripts executed by CPack during its local staging
  installation, which is done right before packaging the files.
  The scripts are not called by a standalone install (e.g.: ``make install``).
  For every script, the following variables will be set:
  :variable:`CMAKE_CURRENT_SOURCE_DIR`, :variable:`CMAKE_CURRENT_BINARY_DIR`
  and :variable:`CMAKE_INSTALL_PREFIX` (which is set to the staging install
  directory).  The singular form ``CMAKE_INSTALL_SCRIPT`` is supported as
  an alternative variable for historical reasons, but its value is ignored if
  ``CMAKE_INSTALL_SCRIPTS`` is set and a warning will be issued.

.. variable:: CPACK_INSTALLED_DIRECTORIES

  Extra directories to install.

.. variable:: CPACK_PACKAGE_INSTALL_REGISTRY_KEY

  Registry key used when installing this project.  This is only used by
  installers for Windows.  The default value is based on the installation
  directory.

.. variable:: CPACK_CREATE_DESKTOP_LINKS

  List of desktop links to create.  Each desktop link requires a
  corresponding start menu shortcut as created by
  :variable:`CPACK_PACKAGE_EXECUTABLES`.

.. variable:: CPACK_BINARY_<GENNAME>

  CPack generated options for binary generators.  The ``CPack.cmake`` module
  generates (when :variable:`CPACK_GENERATOR` is not set) a set of CMake
  options (see CMake :command:`option` command) which may then be used to
  select the CPack generator(s) to be used when building the ``package``
  target or when running :manual:`cpack <cpack(1)>` without the ``-G`` option.

.. variable:: CPACK_PRE_BUILD_SCRIPTS

  List of CMake scripts to execute after CPack has installed the files to
  be packed into a staging directory and before producing the result
  packages.

.. variable:: CPACK_POST_BUILD_SCRIPTS

  List of CMake scripts to execute after CPack has produced the result
  packages and before copying them back to a build directory.

.. variable:: CPACK_PACKAGE_FILES

  List of resulting package files passed to the ``CPACK_POST_BUILD_SCRIPTS``.

#]=======================================================================]

# Define this var in order to avoid (or warn) concerning multiple inclusion
if(CPack_CMake_INCLUDED)
  message(WARNING "CPack.cmake has already been included!!")
else()
  set(CPack_CMake_INCLUDED 1)
endif()

# Pick a configuration file
set(cpack_input_file "${CMAKE_ROOT}/Templates/CPackConfig.cmake.in")
if(EXISTS "${CMAKE_SOURCE_DIR}/CPackConfig.cmake.in")
  set(cpack_input_file "${CMAKE_SOURCE_DIR}/CPackConfig.cmake.in")
endif()
set(cpack_source_input_file "${CMAKE_ROOT}/Templates/CPackConfig.cmake.in")
if(EXISTS "${CMAKE_SOURCE_DIR}/CPackSourceConfig.cmake.in")
  set(cpack_source_input_file "${CMAKE_SOURCE_DIR}/CPackSourceConfig.cmake.in")
endif()

# Backward compatibility
# Include CPackComponent macros if it has not already been included before.
include(CPackComponent)

# Macro for setting values if a user did not overwrite them
# Mangles CMake-special characters. Only kept for backwards compatibility.
macro(cpack_set_if_not_set name value)
  message(DEPRECATION "cpack_set_if_not_set is obsolete; do not use.")
  _cpack_set_default("${name}" "${value}")
endmacro()

# cpack_encode_variables - Function to encode variables for the configuration file
# find any variable that starts with CPACK and create a variable
# _CPACK_OTHER_VARIABLES_ that contains SET commands for
# each cpack variable.  _CPACK_OTHER_VARIABLES_ is then
# used as an @ replacement in configure_file for the CPackConfig.
function(cpack_encode_variables)
  set(commands "")
  get_cmake_property(res VARIABLES)
  foreach(var ${res})
    if(var MATCHES "^CPACK")
      if(CPACK_VERBATIM_VARIABLES)
        _cpack_escape_for_cmake(value "${${var}}")
      else()
        set(value "${${var}}")
      endif()

      string(APPEND commands "\nset(${var} \"${value}\")")
    endif()
  endforeach()

  set(_CPACK_OTHER_VARIABLES_ "${commands}" PARENT_SCOPE)
endfunction()

# Internal use functions
function(_cpack_set_default name value)
  if(NOT DEFINED "${name}")
    set("${name}" "${value}" PARENT_SCOPE)
  endif()
endfunction()

function(_cpack_escape_for_cmake var value)
  string(REGEX REPLACE "([\\\$\"])" "\\\\\\1" escaped "${value}")
  set("${var}" "${escaped}" PARENT_SCOPE)
endfunction()

# Set the package name
_cpack_set_default(CPACK_PACKAGE_NAME "${CMAKE_PROJECT_NAME}")

# Set the package version
if(CMAKE_PROJECT_VERSION_MAJOR GREATER_EQUAL 0)
  _cpack_set_default(CPACK_PACKAGE_VERSION_MAJOR "${CMAKE_PROJECT_VERSION_MAJOR}")
  if(CMAKE_PROJECT_VERSION_MINOR GREATER_EQUAL 0)
    _cpack_set_default(CPACK_PACKAGE_VERSION_MINOR "${CMAKE_PROJECT_VERSION_MINOR}")
    if(CMAKE_PROJECT_VERSION_PATCH GREATER_EQUAL 0)
      _cpack_set_default(CPACK_PACKAGE_VERSION_PATCH "${CMAKE_PROJECT_VERSION_PATCH}")
    endif()
  endif()
else()
  _cpack_set_default(CPACK_PACKAGE_VERSION_MAJOR "0")
  _cpack_set_default(CPACK_PACKAGE_VERSION_MINOR "1")
  _cpack_set_default(CPACK_PACKAGE_VERSION_PATCH "1")
endif()
if(NOT DEFINED CPACK_PACKAGE_VERSION)
  set(CPACK_PACKAGE_VERSION "${CPACK_PACKAGE_VERSION_MAJOR}")
  if(CPACK_PACKAGE_VERSION_MINOR GREATER_EQUAL 0)
    string(APPEND CPACK_PACKAGE_VERSION ".${CPACK_PACKAGE_VERSION_MINOR}")
    if(CPACK_PACKAGE_VERSION_PATCH GREATER_EQUAL 0)
      string(APPEND CPACK_PACKAGE_VERSION ".${CPACK_PACKAGE_VERSION_PATCH}")
    endif()
  endif()
endif()

_cpack_set_default(CPACK_PACKAGE_VENDOR "Humanity")
set(CPACK_DEFAULT_PACKAGE_DESCRIPTION_SUMMARY "${CMAKE_PROJECT_NAME} built using CMake")
if(CMAKE_PROJECT_DESCRIPTION)
  _cpack_set_default(CPACK_PACKAGE_DESCRIPTION_SUMMARY
    "${CMAKE_PROJECT_DESCRIPTION}")
else()
  _cpack_set_default(CPACK_PACKAGE_DESCRIPTION_SUMMARY
    "${CPACK_DEFAULT_PACKAGE_DESCRIPTION_SUMMARY}")
endif()
if(CMAKE_PROJECT_HOMEPAGE_URL)
  _cpack_set_default(CPACK_PACKAGE_HOMEPAGE_URL
    "${CMAKE_PROJECT_HOMEPAGE_URL}")
endif()

set(CPACK_DEFAULT_PACKAGE_DESCRIPTION_FILE
  "${CMAKE_ROOT}/Templates/CPack.GenericDescription.txt")
_cpack_set_default(CPACK_PACKAGE_DESCRIPTION_FILE
  "${CPACK_DEFAULT_PACKAGE_DESCRIPTION_FILE}")
_cpack_set_default(CPACK_RESOURCE_FILE_LICENSE
  "${CMAKE_ROOT}/Templates/CPack.GenericLicense.txt")
_cpack_set_default(CPACK_RESOURCE_FILE_README
  "${CMAKE_ROOT}/Templates/CPack.GenericDescription.txt")
_cpack_set_default(CPACK_RESOURCE_FILE_WELCOME
  "${CMAKE_ROOT}/Templates/CPack.GenericWelcome.txt")

_cpack_set_default(CPACK_MODULE_PATH "${CMAKE_MODULE_PATH}")

# Set default directory creation permissions mode
if(CMAKE_INSTALL_DEFAULT_DIRECTORY_PERMISSIONS)
  _cpack_set_default(CPACK_INSTALL_DEFAULT_DIRECTORY_PERMISSIONS
    "${CMAKE_INSTALL_DEFAULT_DIRECTORY_PERMISSIONS}")
endif()

if(CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL)
  set(CPACK_NSIS_ENABLE_UNINSTALL_BEFORE_INSTALL ON)
endif()

if(CPACK_NSIS_MODIFY_PATH)
  set(CPACK_NSIS_MODIFY_PATH ON)
endif()

set(__cpack_system_name ${CMAKE_SYSTEM_NAME})
if(__cpack_system_name MATCHES "Windows")
  if(CMAKE_SIZEOF_VOID_P EQUAL 8)
    set(__cpack_system_name win64)
  else()
    set(__cpack_system_name win32)
  endif()
endif()
_cpack_set_default(CPACK_SYSTEM_NAME "${__cpack_system_name}")

# Root dir: default value should be the string literal "$PROGRAMFILES"
# for backwards compatibility. Projects may set this value to anything.
# When creating 64 bit binaries we set the default value to "$PROGRAMFILES64"
if("x${__cpack_system_name}" STREQUAL "xwin64")
  set(__cpack_root_default "$PROGRAMFILES64")
else()
  set(__cpack_root_default "$PROGRAMFILES")
endif()
_cpack_set_default(CPACK_NSIS_INSTALL_ROOT "${__cpack_root_default}")

# <project>-<major>.<minor>.<patch>-<release>-<platform>.<pkgtype>
_cpack_set_default(CPACK_PACKAGE_FILE_NAME
  "${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION}-${CPACK_SYSTEM_NAME}")
_cpack_set_default(CPACK_PACKAGE_INSTALL_DIRECTORY
  "${CPACK_PACKAGE_NAME} ${CPACK_PACKAGE_VERSION}")
_cpack_set_default(CPACK_PACKAGE_INSTALL_REGISTRY_KEY
  "${CPACK_PACKAGE_INSTALL_DIRECTORY}")
_cpack_set_default(CPACK_PACKAGE_DEFAULT_LOCATION "/")
_cpack_set_default(CPACK_PACKAGE_RELOCATABLE "true")

# always force to exactly "true" or "false" for CPack.Info.plist.in:
if(CPACK_PACKAGE_RELOCATABLE)
  set(CPACK_PACKAGE_RELOCATABLE "true")
else()
  set(CPACK_PACKAGE_RELOCATABLE "false")
endif()

macro(cpack_check_file_exists file description)
  if(NOT EXISTS "${file}")
    message(SEND_ERROR "CPack ${description} file: \"${file}\" could not be found.")
  endif()
endmacro()

cpack_check_file_exists("${CPACK_PACKAGE_DESCRIPTION_FILE}" "package description")
cpack_check_file_exists("${CPACK_RESOURCE_FILE_LICENSE}"    "license resource")
cpack_check_file_exists("${CPACK_RESOURCE_FILE_README}"     "readme resource")
cpack_check_file_exists("${CPACK_RESOURCE_FILE_WELCOME}"    "welcome resource")

macro(cpack_optional_append _list _cond _item)
  if(${_cond})
    set(${_list} ${${_list}} ${_item})
  endif()
endmacro()

# Provide options to choose generators we might check here if the required
# tools for the generators exist and set the defaults according to the
# results.
if(NOT CPACK_GENERATOR)
  if(UNIX)
    if(CYGWIN)
      option(CPACK_BINARY_CYGWIN "Enable to build Cygwin binary packages" ON)
    else()
      if(APPLE)
        option(CPACK_BINARY_BUNDLE       "Enable to build OSX bundles"      OFF)
        option(CPACK_BINARY_DRAGNDROP    "Enable to build OSX Drag And Drop package" OFF)
        option(CPACK_BINARY_OSXX11       "Enable to build OSX X11 packages (deprecated)" OFF)
        option(CPACK_BINARY_PACKAGEMAKER "Enable to build PackageMaker packages (deprecated)" OFF)
        option(CPACK_BINARY_PRODUCTBUILD "Enable to build productbuild packages" OFF)
        mark_as_advanced(
          CPACK_BINARY_BUNDLE
          CPACK_BINARY_DRAGNDROP
          CPACK_BINARY_OSXX11
          CPACK_BINARY_PACKAGEMAKER
          CPACK_BINARY_PRODUCTBUILD
          )
      else()
        option(CPACK_BINARY_TZ  "Enable to build TZ packages"     ON)
        mark_as_advanced(CPACK_BINARY_TZ)
      endif()
      option(CPACK_BINARY_DEB  "Enable to build Debian packages"  OFF)
      option(CPACK_BINARY_FREEBSD  "Enable to build FreeBSD packages"  OFF)
      option(CPACK_BINARY_NSIS "Enable to build NSIS packages"    OFF)
      option(CPACK_BINARY_RPM  "Enable to build RPM packages"     OFF)
      option(CPACK_BINARY_STGZ "Enable to build STGZ packages"    ON)
      option(CPACK_BINARY_TBZ2 "Enable to build TBZ2 packages"    OFF)
      option(CPACK_BINARY_TGZ  "Enable to build TGZ packages"     ON)
      option(CPACK_BINARY_TXZ  "Enable to build TXZ packages"     OFF)
      mark_as_advanced(
        CPACK_BINARY_DEB
        CPACK_BINARY_FREEBSD
        CPACK_BINARY_NSIS
        CPACK_BINARY_RPM
        CPACK_BINARY_STGZ
        CPACK_BINARY_TBZ2
        CPACK_BINARY_TGZ
        CPACK_BINARY_TXZ
        )
    endif()
  else()
    option(CPACK_BINARY_7Z    "Enable to build 7-Zip packages" OFF)
    option(CPACK_BINARY_NSIS  "Enable to build NSIS packages" ON)
    option(CPACK_BINARY_NUGET "Enable to build NuGet packages" OFF)
    option(CPACK_BINARY_WIX   "Enable to build WiX packages" OFF)
    option(CPACK_BINARY_ZIP   "Enable to build ZIP packages" OFF)
    mark_as_advanced(
      CPACK_BINARY_7Z
      CPACK_BINARY_NSIS
      CPACK_BINARY_NUGET
      CPACK_BINARY_WIX
      CPACK_BINARY_ZIP
      )
  endif()
  option(CPACK_BINARY_IFW "Enable to build IFW packages" OFF)
  mark_as_advanced(CPACK_BINARY_IFW)

  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_7Z           7Z)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_BUNDLE       Bundle)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_CYGWIN       CygwinBinary)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_DEB          DEB)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_DRAGNDROP    DragNDrop)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_FREEBSD      FREEBSD)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_IFW          IFW)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_NSIS         NSIS)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_NUGET        NuGet)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_OSXX11       OSXX11)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_PACKAGEMAKER PackageMaker)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_PRODUCTBUILD productbuild)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_RPM          RPM)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_STGZ         STGZ)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_TBZ2         TBZ2)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_TGZ          TGZ)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_TXZ          TXZ)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_TZ           TZ)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_WIX          WIX)
  cpack_optional_append(CPACK_GENERATOR  CPACK_BINARY_ZIP          ZIP)

endif()

# Provide options to choose source generators
if(NOT CPACK_SOURCE_GENERATOR)
  if(UNIX)
    if(CYGWIN)
      option(CPACK_SOURCE_CYGWIN "Enable to build Cygwin source packages" ON)
      mark_as_advanced(CPACK_SOURCE_CYGWIN)
    else()
      option(CPACK_SOURCE_RPM  "Enable to build RPM source packages"  OFF)
      option(CPACK_SOURCE_TBZ2 "Enable to build TBZ2 source packages" ON)
      option(CPACK_SOURCE_TGZ  "Enable to build TGZ source packages"  ON)
      option(CPACK_SOURCE_TXZ  "Enable to build TXZ source packages"  ON)
      option(CPACK_SOURCE_TZ   "Enable to build TZ source packages"   ON)
      option(CPACK_SOURCE_ZIP  "Enable to build ZIP source packages"  OFF)
      mark_as_advanced(
        CPACK_SOURCE_RPM
        CPACK_SOURCE_TBZ2
        CPACK_SOURCE_TGZ
        CPACK_SOURCE_TXZ
        CPACK_SOURCE_TZ
        CPACK_SOURCE_ZIP
        )
    endif()
  else()
    option(CPACK_SOURCE_7Z  "Enable to build 7-Zip source packages" ON)
    option(CPACK_SOURCE_ZIP "Enable to build ZIP source packages" ON)
    mark_as_advanced(
      CPACK_SOURCE_7Z
      CPACK_SOURCE_ZIP
      )
  endif()

  cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_7Z      7Z)
  cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_CYGWIN  CygwinSource)
  cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_RPM     RPM)
  cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_TBZ2    TBZ2)
  cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_TGZ     TGZ)
  cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_TXZ     TXZ)
  cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_TZ      TZ)
  cpack_optional_append(CPACK_SOURCE_GENERATOR  CPACK_SOURCE_ZIP     ZIP)
endif()

# Set some other variables
_cpack_set_default(CPACK_INSTALL_CMAKE_PROJECTS
  "${CMAKE_BINARY_DIR};${CMAKE_PROJECT_NAME};ALL;/")
_cpack_set_default(CPACK_CMAKE_GENERATOR "${CMAKE_GENERATOR}")
_cpack_set_default(CPACK_TOPLEVEL_TAG "${CPACK_SYSTEM_NAME}")
# if the user has set CPACK_NSIS_DISPLAY_NAME remember it
if(DEFINED CPACK_NSIS_DISPLAY_NAME)
  set(CPACK_NSIS_DISPLAY_NAME_SET TRUE)
endif()
# if the user has set CPACK_NSIS_DISPLAY
# explicitly, then use that as the default
# value of CPACK_NSIS_PACKAGE_NAME  instead
# of CPACK_PACKAGE_INSTALL_DIRECTORY
_cpack_set_default(CPACK_NSIS_DISPLAY_NAME "${CPACK_PACKAGE_INSTALL_DIRECTORY}")
# Specify the name of the Uninstall file in NSIS
_cpack_set_default(CPACK_NSIS_UNINSTALL_NAME "Uninstall")

if(CPACK_NSIS_DISPLAY_NAME_SET)
  _cpack_set_default(CPACK_NSIS_PACKAGE_NAME "${CPACK_NSIS_DISPLAY_NAME}")
else()
  _cpack_set_default(CPACK_NSIS_PACKAGE_NAME "${CPACK_PACKAGE_INSTALL_DIRECTORY}")
endif()

_cpack_set_default(CPACK_OUTPUT_CONFIG_FILE
  "${CMAKE_BINARY_DIR}/CPackConfig.cmake")

_cpack_set_default(CPACK_SOURCE_OUTPUT_CONFIG_FILE
  "${CMAKE_BINARY_DIR}/CPackSourceConfig.cmake")

_cpack_set_default(CPACK_SET_DESTDIR OFF)
_cpack_set_default(CPACK_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")

_cpack_set_default(CPACK_NSIS_INSTALLER_ICON_CODE "")
_cpack_set_default(CPACK_NSIS_INSTALLER_MUI_ICON_CODE "")

# WiX specific variables
_cpack_set_default(CPACK_WIX_SIZEOF_VOID_P "${CMAKE_SIZEOF_VOID_P}")

# set sysroot so SDK tools can be used
if(CMAKE_OSX_SYSROOT)
  _cpack_set_default(CPACK_OSX_SYSROOT "${_CMAKE_OSX_SYSROOT_PATH}")
endif()

_cpack_set_default(CPACK_BUILD_SOURCE_DIRS "${CMAKE_SOURCE_DIR};${CMAKE_BINARY_DIR}")

if(DEFINED CPACK_COMPONENTS_ALL)
  if(CPACK_MONOLITHIC_INSTALL)
    message("CPack warning: both CPACK_COMPONENTS_ALL and CPACK_MONOLITHIC_INSTALL have been set.\nDefaulting to a monolithic installation.")
    set(CPACK_COMPONENTS_ALL)
  else()
    # The user has provided the set of components to be installed as
    # part of a component-based installation; trust her.
    set(CPACK_COMPONENTS_ALL_SET_BY_USER TRUE)
  endif()
else()
  # If the user has not specifically requested a monolithic installer
  # but has specified components in various "install" commands, tell
  # CPack about those components.
  if(NOT CPACK_MONOLITHIC_INSTALL)
    get_cmake_property(CPACK_COMPONENTS_ALL COMPONENTS)
    list(LENGTH CPACK_COMPONENTS_ALL CPACK_COMPONENTS_LEN)
    if(CPACK_COMPONENTS_LEN EQUAL 1)
      # Only one component: this is not a component-based installation
      # (at least, it isn't a component-based installation, but may
      # become one later if the user uses the cpack_add_* commands).
      set(CPACK_COMPONENTS_ALL)
    endif()
    set(CPACK_COMPONENTS_LEN)
  endif()
endif()

# CMake always generates a component named "Unspecified", which is
# used to install everything that doesn't have an explicitly-provided
# component. Since these files should always be installed, we'll make
# them hidden and required.
set(CPACK_COMPONENT_UNSPECIFIED_HIDDEN TRUE)
set(CPACK_COMPONENT_UNSPECIFIED_REQUIRED TRUE)

cpack_encode_variables()
configure_file("${cpack_input_file}" "${CPACK_OUTPUT_CONFIG_FILE}" @ONLY)

# Generate source file
_cpack_set_default(CPACK_SOURCE_INSTALLED_DIRECTORIES
  "${CMAKE_SOURCE_DIR};/")
_cpack_set_default(CPACK_SOURCE_TOPLEVEL_TAG "${CPACK_SYSTEM_NAME}-Source")
_cpack_set_default(CPACK_SOURCE_PACKAGE_FILE_NAME
  "${CPACK_PACKAGE_NAME}-${CPACK_PACKAGE_VERSION}-Source")

set(__cpack_source_ignore_files_default
  "/CVS/;/\\.svn/;/\\.bzr/;/\\.hg/;/\\.git/;\\.swp$;\\.#;/#")
if(NOT CPACK_VERBATIM_VARIABLES)
  _cpack_escape_for_cmake(__cpack_source_ignore_files_default
    "${__cpack_source_ignore_files_default}")
endif()
_cpack_set_default(CPACK_SOURCE_IGNORE_FILES "${__cpack_source_ignore_files_default}")

set(CPACK_INSTALL_CMAKE_PROJECTS "${CPACK_SOURCE_INSTALL_CMAKE_PROJECTS}")
set(CPACK_INSTALLED_DIRECTORIES "${CPACK_SOURCE_INSTALLED_DIRECTORIES}")
set(CPACK_GENERATOR "${CPACK_SOURCE_GENERATOR}")
set(CPACK_TOPLEVEL_TAG "${CPACK_SOURCE_TOPLEVEL_TAG}")
set(CPACK_PACKAGE_FILE_NAME "${CPACK_SOURCE_PACKAGE_FILE_NAME}")
set(CPACK_IGNORE_FILES "${CPACK_SOURCE_IGNORE_FILES}")
set(CPACK_STRIP_FILES "${CPACK_SOURCE_STRIP_FILES}")

set(CPACK_RPM_PACKAGE_SOURCES "ON")

cpack_encode_variables()
configure_file("${cpack_source_input_file}"
  "${CPACK_SOURCE_OUTPUT_CONFIG_FILE}" @ONLY)