CMake/Modules/FeatureSummary.cmake
Brad King 86578eccf2 Simplify CMake per-source license notices
Per-source copyright/license notice headers that spell out copyright holder
names and years are hard to maintain and often out-of-date or plain wrong.
Precise contributor information is already maintained automatically by the
version control tool.  Ultimately it is the receiver of a file who is
responsible for determining its licensing status, and per-source notices are
merely a convenience.  Therefore it is simpler and more accurate for
each source to have a generic notice of the license name and references to
more detailed information on copyright holders and full license terms.

Our `Copyright.txt` file now contains a list of Contributors whose names
appeared source-level copyright notices.  It also references version control
history for more precise information.  Therefore we no longer need to spell
out the list of Contributors in each source file notice.

Replace CMake per-source copyright/license notice headers with a short
description of the license and links to `Copyright.txt` and online information
available from "https://cmake.org/licensing".  The online URL also handles
cases of modules being copied out of our source into other projects, so we
can drop our notices about replacing links with full license text.

Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority
of the replacements mechanically.  Manually fix up shebang lines and trailing
newlines in a few files.  Manually update the notices in a few files that the
script does not handle.
2016-09-27 15:14:44 -04:00

582 lines
22 KiB
CMake

# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FeatureSummary
--------------
Functions for generating a summary of enabled/disabled features.
These functions can be used to generate a summary of enabled and disabled
packages and/or feature for a build tree such as::
-- The following OPTIONAL packages have been found:
LibXml2 (required version >= 2.4), XML processing lib, <http://xmlsoft.org>
* Enables HTML-import in MyWordProcessor
* Enables odt-export in MyWordProcessor
PNG , A PNG image library. , <http://www.libpng.org/pub/png/>
* Enables saving screenshots
-- The following OPTIONAL packages have not been found:
Lua51 , The Lua scripting language. , <http://www.lua.org>
* Enables macros in MyWordProcessor
Foo , Foo provides cool stuff.
Functions
^^^^^^^^^
#]=======================================================================]
include("${CMAKE_CURRENT_LIST_DIR}/CMakeParseArguments.cmake")
function(_FS_GET_FEATURE_SUMMARY _property _var _includeQuiet)
set(_type "ANY")
if("${_property}" MATCHES "REQUIRED_")
set(_type "REQUIRED")
elseif("${_property}" MATCHES "RECOMMENDED_")
set(_type "RECOMMENDED")
elseif("${_property}" MATCHES "RUNTIME_")
set(_type "RUNTIME")
elseif("${_property}" MATCHES "OPTIONAL_")
set(_type "OPTIONAL")
endif()
if("${_property}" MATCHES "PACKAGES_FOUND")
set(_property "PACKAGES_FOUND")
elseif("${_property}" MATCHES "PACKAGES_NOT_FOUND")
set(_property "PACKAGES_NOT_FOUND")
endif()
set(_currentFeatureText "")
get_property(_EnabledFeatures GLOBAL PROPERTY ${_property})
if(_EnabledFeatures)
list(REMOVE_DUPLICATES _EnabledFeatures)
endif(_EnabledFeatures)
foreach(_currentFeature ${_EnabledFeatures})
# does this package belong to the type we currently want to list ?
get_property(_currentType GLOBAL PROPERTY _CMAKE_${_currentFeature}_TYPE)
if(NOT _currentType)
set(_currentType OPTIONAL)
endif()
if("${_type}" STREQUAL ANY OR "${_type}" STREQUAL "${_currentType}")
# check whether the current feature/package should be in the output depending on whether it was QUIET or not
set(includeThisOne TRUE)
# skip QUIET packages, except if they are REQUIRED or INCLUDE_QUIET_PACKAGES has been set
if((NOT "${_currentType}" STREQUAL "REQUIRED") AND NOT _includeQuiet)
get_property(_isQuiet GLOBAL PROPERTY _CMAKE_${_currentFeature}_QUIET)
if(_isQuiet)
set(includeThisOne FALSE)
endif()
endif()
get_property(_isTransitiveDepend
GLOBAL PROPERTY _CMAKE_${_currentFeature}_TRANSITIVE_DEPENDENCY
)
if(_isTransitiveDepend)
set(includeThisOne FALSE)
endif()
if(includeThisOne)
string(APPEND _currentFeatureText "\n * ${_currentFeature}")
get_property(_info GLOBAL PROPERTY _CMAKE_${_currentFeature}_REQUIRED_VERSION)
if(_info)
string(APPEND _currentFeatureText " (required version ${_info})")
endif()
get_property(_info GLOBAL PROPERTY _CMAKE_${_currentFeature}_DESCRIPTION)
if(_info)
string(APPEND _currentFeatureText " , ${_info}")
endif()
get_property(_info GLOBAL PROPERTY _CMAKE_${_currentFeature}_URL)
if(_info)
string(APPEND _currentFeatureText " , <${_info}>")
endif()
get_property(_info GLOBAL PROPERTY _CMAKE_${_currentFeature}_PURPOSE)
foreach(_purpose ${_info})
string(APPEND _currentFeatureText "\n ${_purpose}")
endforeach()
endif()
endif()
endforeach()
set(${_var} "${_currentFeatureText}" PARENT_SCOPE)
endfunction()
#[=======================================================================[.rst:
.. command:: feature_summary
::
feature_summary( [FILENAME <file>]
[APPEND]
[VAR <variable_name>]
[INCLUDE_QUIET_PACKAGES]
[FATAL_ON_MISSING_REQUIRED_PACKAGES]
[DESCRIPTION "Found packages:"]
WHAT (ALL | PACKAGES_FOUND | PACKAGES_NOT_FOUND
| ENABLED_FEATURES | DISABLED_FEATURES)
)
The ``feature_summary()`` macro can be used to print information about
enabled or disabled packages or features of a project. By default,
only the names of the features/packages will be printed and their
required version when one was specified. Use ``set_package_properties()``
to add more useful information, like e.g. a download URL for the
respective package or their purpose in the project.
The ``WHAT`` option is the only mandatory option. Here you specify what
information will be printed:
``ALL``
print everything
``ENABLED_FEATURES``
the list of all features which are enabled
``DISABLED_FEATURES``
the list of all features which are disabled
``PACKAGES_FOUND``
the list of all packages which have been found
``PACKAGES_NOT_FOUND``
the list of all packages which have not been found
``OPTIONAL_PACKAGES_FOUND``
only those packages which have been found which have the type OPTIONAL
``OPTIONAL_PACKAGES_NOT_FOUND``
only those packages which have not been found which have the type OPTIONAL
``RECOMMENDED_PACKAGES_FOUND``
only those packages which have been found which have the type RECOMMENDED
``RECOMMENDED_PACKAGES_NOT_FOUND``
only those packages which have not been found which have the type RECOMMENDED
``REQUIRED_PACKAGES_FOUND``
only those packages which have been found which have the type REQUIRED
``REQUIRED_PACKAGES_NOT_FOUND``
only those packages which have not been found which have the type REQUIRED
``RUNTIME_PACKAGES_FOUND``
only those packages which have been found which have the type RUNTIME
``RUNTIME_PACKAGES_NOT_FOUND``
only those packages which have not been found which have the type RUNTIME
With the exception of the ``ALL`` value, these values can be combined
in order to customize the output. For example:
.. code-block:: cmake
feature_summary(WHAT ENABLED_FEATURES DISABLED_FEATURES)
If a ``FILENAME`` is given, the information is printed into this file. If
``APPEND`` is used, it is appended to this file, otherwise the file is
overwritten if it already existed. If the VAR option is used, the
information is "printed" into the specified variable. If ``FILENAME`` is
not used, the information is printed to the terminal. Using the
``DESCRIPTION`` option a description or headline can be set which will be
printed above the actual content. If ``INCLUDE_QUIET_PACKAGES`` is given,
packages which have been searched with ``find_package(... QUIET)`` will
also be listed. By default they are skipped. If
``FATAL_ON_MISSING_REQUIRED_PACKAGES`` is given, CMake will abort if a
package which is marked as ``REQUIRED`` has not been found.
Example 1, append everything to a file:
.. code-block:: cmake
include(FeatureSummary)
feature_summary(WHAT ALL
FILENAME ${CMAKE_BINARY_DIR}/all.log APPEND)
Example 2, print the enabled features into the variable
enabledFeaturesText, including QUIET packages:
.. code-block:: cmake
include(FeatureSummary)
feature_summary(WHAT ENABLED_FEATURES
INCLUDE_QUIET_PACKAGES
DESCRIPTION "Enabled Features:"
VAR enabledFeaturesText)
message(STATUS "${enabledFeaturesText}")
#]=======================================================================]
function(FEATURE_SUMMARY)
# CMAKE_PARSE_ARGUMENTS(<prefix> <options> <one_value_keywords> <multi_value_keywords> args...)
set(options APPEND INCLUDE_QUIET_PACKAGES FATAL_ON_MISSING_REQUIRED_PACKAGES)
set(oneValueArgs FILENAME VAR DESCRIPTION)
set(multiValueArgs WHAT)
CMAKE_PARSE_ARGUMENTS(_FS "${options}" "${oneValueArgs}" "${multiValueArgs}" ${_FIRST_ARG} ${ARGN})
if(_FS_UNPARSED_ARGUMENTS)
message(FATAL_ERROR "Unknown keywords given to FEATURE_SUMMARY(): \"${_FS_UNPARSED_ARGUMENTS}\"")
endif()
if(NOT _FS_WHAT)
message(FATAL_ERROR "The call to FEATURE_SUMMARY() doesn't set the required WHAT argument.")
endif()
set(validWhatParts "ENABLED_FEATURES"
"DISABLED_FEATURES"
"PACKAGES_FOUND"
"PACKAGES_NOT_FOUND"
"OPTIONAL_PACKAGES_FOUND"
"OPTIONAL_PACKAGES_NOT_FOUND"
"RECOMMENDED_PACKAGES_FOUND"
"RECOMMENDED_PACKAGES_NOT_FOUND"
"REQUIRED_PACKAGES_FOUND"
"REQUIRED_PACKAGES_NOT_FOUND"
"RUNTIME_PACKAGES_FOUND"
"RUNTIME_PACKAGES_NOT_FOUND")
list(FIND validWhatParts "${_FS_WHAT}" indexInList)
if(NOT "${indexInList}" STREQUAL "-1")
_FS_GET_FEATURE_SUMMARY( ${_FS_WHAT} _featureSummary ${_FS_INCLUDE_QUIET_PACKAGES} )
set(_fullText "${_FS_DESCRIPTION}${_featureSummary}\n")
if (("${_FS_WHAT}" STREQUAL "REQUIRED_PACKAGES_NOT_FOUND") AND _featureSummary)
set(requiredPackagesNotFound TRUE)
endif()
else()
if("${_FS_WHAT}" STREQUAL "ALL")
set(allWhatParts "ENABLED_FEATURES"
"RUNTIME_PACKAGES_FOUND"
"OPTIONAL_PACKAGES_FOUND"
"RECOMMENDED_PACKAGES_FOUND"
"REQUIRED_PACKAGES_FOUND"
"DISABLED_FEATURES"
"RUNTIME_PACKAGES_NOT_FOUND"
"OPTIONAL_PACKAGES_NOT_FOUND"
"RECOMMENDED_PACKAGES_NOT_FOUND"
"REQUIRED_PACKAGES_NOT_FOUND"
)
else()
set(allWhatParts)
foreach(part ${_FS_WHAT})
list(FIND validWhatParts "${part}" indexInList)
if(NOT "${indexInList}" STREQUAL "-1")
list(APPEND allWhatParts "${part}")
else()
if("${part}" STREQUAL "ALL")
message(FATAL_ERROR "The WHAT argument of FEATURE_SUMMARY() contains ALL, which cannot be combined with other values.")
else()
message(FATAL_ERROR "The WHAT argument of FEATURE_SUMMARY() contains ${part}, which is not a valid value.")
endif()
endif()
endforeach()
endif()
set(title_ENABLED_FEATURES "The following features have been enabled:")
set(title_DISABLED_FEATURES "The following features have been disabled:")
set(title_PACKAGES_FOUND "The following packages have been found:")
set(title_PACKAGES_NOT_FOUND "The following packages have not been found:")
set(title_OPTIONAL_PACKAGES_FOUND "The following OPTIONAL packages have been found:")
set(title_OPTIONAL_PACKAGES_NOT_FOUND "The following OPTIONAL packages have not been found:")
set(title_RECOMMENDED_PACKAGES_FOUND "The following RECOMMENDED packages have been found:")
set(title_RECOMMENDED_PACKAGES_NOT_FOUND "The following RECOMMENDED packages have not been found:")
set(title_REQUIRED_PACKAGES_FOUND "The following REQUIRED packages have been found:")
set(title_REQUIRED_PACKAGES_NOT_FOUND "The following REQUIRED packages have not been found:")
set(title_RUNTIME_PACKAGES_FOUND "The following RUNTIME packages have been found:")
set(title_RUNTIME_PACKAGES_NOT_FOUND "The following RUNTIME packages have not been found:")
set(_fullText "${_FS_DESCRIPTION}")
foreach(part ${allWhatParts})
set(_tmp)
_FS_GET_FEATURE_SUMMARY( ${part} _tmp ${_FS_INCLUDE_QUIET_PACKAGES})
if(_tmp)
string(APPEND _fullText "\n-- ${title_${part}}\n${_tmp}\n")
if("${part}" STREQUAL "REQUIRED_PACKAGES_NOT_FOUND")
set(requiredPackagesNotFound TRUE)
endif()
endif()
endforeach()
endif()
if(_FS_FILENAME)
if(_FS_APPEND)
file(APPEND "${_FS_FILENAME}" "${_fullText}")
else()
file(WRITE "${_FS_FILENAME}" "${_fullText}")
endif()
else()
if(NOT _FS_VAR)
message(STATUS "${_fullText}")
endif()
endif()
if(_FS_VAR)
set(${_FS_VAR} "${_fullText}" PARENT_SCOPE)
endif()
if(requiredPackagesNotFound AND _FS_FATAL_ON_MISSING_REQUIRED_PACKAGES)
message(FATAL_ERROR "feature_summary() Error: REQUIRED package(s) are missing, aborting CMake run.")
endif()
endfunction()
#[=======================================================================[.rst:
.. command:: set_package_properties
::
set_package_properties(<name> PROPERTIES
[ URL <url> ]
[ DESCRIPTION <description> ]
[ TYPE (RUNTIME|OPTIONAL|RECOMMENDED|REQUIRED) ]
[ PURPOSE <purpose> ]
)
Use this macro to set up information about the named package, which
can then be displayed via FEATURE_SUMMARY(). This can be done either
directly in the Find-module or in the project which uses the module
after the find_package() call. The features for which information can
be set are added automatically by the find_package() command.
``URL <url>``
This should be the homepage of the package, or something similar.
Ideally this is set already directly in the Find-module.
``DESCRIPTION <description>``
A short description what that package is, at most one sentence.
Ideally this is set already directly in the Find-module.
``TYPE <type>``
What type of dependency has the using project on that package.
Default is ``OPTIONAL``. In this case it is a package which can be used
by the project when available at buildtime, but it also work without.
``RECOMMENDED`` is similar to ``OPTIONAL``, i.e. the project will build if
the package is not present, but the functionality of the resulting
binaries will be severly limited. If a ``REQUIRED`` package is not
available at buildtime, the project may not even build. This can be
combined with the ``FATAL_ON_MISSING_REQUIRED_PACKAGES`` argument for
``feature_summary()``. Last, a ``RUNTIME`` package is a package which is
actually not used at all during the build, but which is required for
actually running the resulting binaries. So if such a package is
missing, the project can still be built, but it may not work later on.
If ``set_package_properties()`` is called multiple times for the same
package with different TYPEs, the ``TYPE`` is only changed to higher
TYPEs (``RUNTIME < OPTIONAL < RECOMMENDED < REQUIRED``), lower TYPEs are
ignored. The ``TYPE`` property is project-specific, so it cannot be set
by the Find-module, but must be set in the project.
``PURPOSE <purpose>``
This describes which features this package enables in the
project, i.e. it tells the user what functionality he gets in the
resulting binaries. If set_package_properties() is called multiple
times for a package, all PURPOSE properties are appended to a list of
purposes of the package in the project. As the TYPE property, also
the PURPOSE property is project-specific, so it cannot be set by the
Find-module, but must be set in the project.
Example for setting the info for a package:
.. code-block:: cmake
find_package(LibXml2)
set_package_properties(LibXml2 PROPERTIES
DESCRIPTION "A XML processing library."
URL "http://xmlsoft.org/")
# or
set_package_properties(LibXml2 PROPERTIES
TYPE RECOMMENDED
PURPOSE "Enables HTML-import in MyWordProcessor")
# or
set_package_properties(LibXml2 PROPERTIES
TYPE OPTIONAL
PURPOSE "Enables odt-export in MyWordProcessor")
find_package(DBUS)
set_package_properties(DBUS PROPERTIES
TYPE RUNTIME
PURPOSE "Necessary to disable the screensaver during a presentation")
#]=======================================================================]
function(SET_PACKAGE_PROPERTIES _name _props)
if(NOT "${_props}" STREQUAL "PROPERTIES")
message(FATAL_ERROR "PROPERTIES keyword is missing in SET_PACKAGE_PROPERTIES() call.")
endif()
set(options ) # none
set(oneValueArgs DESCRIPTION URL TYPE PURPOSE )
set(multiValueArgs ) # none
CMAKE_PARSE_ARGUMENTS(_SPP "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(_SPP_UNPARSED_ARGUMENTS)
message(FATAL_ERROR "Unknown keywords given to SET_PACKAGE_PROPERTIES(): \"${_SPP_UNPARSED_ARGUMENTS}\"")
endif()
if(_SPP_DESCRIPTION)
get_property(_info GLOBAL PROPERTY _CMAKE_${_name}_DESCRIPTION)
if(_info AND NOT "${_info}" STREQUAL "${_SPP_DESCRIPTION}")
message(STATUS "Warning: Property DESCRIPTION for package ${_name} already set to \"${_info}\", overriding it with \"${_SPP_DESCRIPTION}\"")
endif()
set_property(GLOBAL PROPERTY _CMAKE_${_name}_DESCRIPTION "${_SPP_DESCRIPTION}" )
endif()
if(_SPP_URL)
get_property(_info GLOBAL PROPERTY _CMAKE_${_name}_URL)
if(_info AND NOT "${_info}" STREQUAL "${_SPP_URL}")
message(STATUS "Warning: Property URL already set to \"${_info}\", overriding it with \"${_SPP_URL}\"")
endif()
set_property(GLOBAL PROPERTY _CMAKE_${_name}_URL "${_SPP_URL}" )
endif()
# handle the PURPOSE: use APPEND, since there can be multiple purposes for one package inside a project
if(_SPP_PURPOSE)
set_property(GLOBAL APPEND PROPERTY _CMAKE_${_name}_PURPOSE "${_SPP_PURPOSE}" )
endif()
# handle the TYPE
if(NOT _SPP_TYPE)
set(_SPP_TYPE OPTIONAL)
endif()
# List the supported types, according to their priority
set(validTypes "RUNTIME" "OPTIONAL" "RECOMMENDED" "REQUIRED" )
list(FIND validTypes ${_SPP_TYPE} _typeIndexInList)
if("${_typeIndexInList}" STREQUAL "-1" )
message(FATAL_ERROR "Bad package property type ${_SPP_TYPE} used in SET_PACKAGE_PROPERTIES(). "
"Valid types are OPTIONAL, RECOMMENDED, REQUIRED and RUNTIME." )
endif()
get_property(_previousType GLOBAL PROPERTY _CMAKE_${_name}_TYPE)
list(FIND validTypes "${_previousType}" _prevTypeIndexInList)
# make sure a previously set TYPE is not overridden with a lower new TYPE:
if("${_typeIndexInList}" GREATER "${_prevTypeIndexInList}")
set_property(GLOBAL PROPERTY _CMAKE_${_name}_TYPE "${_SPP_TYPE}" )
endif()
endfunction()
#[=======================================================================[.rst:
.. command:: add_feature_info
::
add_feature_info(<name> <enabled> <description>)
Use this macro to add information about a feature with the given ``<name>``.
``<enabled>`` contains whether this feature is enabled or not.
``<description>`` is a text describing the feature. The information can
be displayed using ``feature_summary()`` for ``ENABLED_FEATURES`` and
``DISABLED_FEATURES`` respectively.
Example for setting the info for a feature:
.. code-block:: cmake
option(WITH_FOO "Help for foo" ON)
add_feature_info(Foo WITH_FOO "The Foo feature provides very cool stuff.")
#]=======================================================================]
function(ADD_FEATURE_INFO _name _enabled _desc)
if (${_enabled})
set_property(GLOBAL APPEND PROPERTY ENABLED_FEATURES "${_name}")
else ()
set_property(GLOBAL APPEND PROPERTY DISABLED_FEATURES "${_name}")
endif ()
set_property(GLOBAL PROPERTY _CMAKE_${_name}_DESCRIPTION "${_desc}" )
endfunction()
# The stuff below is only kept for compatibility
#[=======================================================================[.rst:
Legacy Macros
^^^^^^^^^^^^^
The following macros are provided for compatibility with previous
CMake versions:
.. command:: set_package_info
::
set_package_info(<name> <description> [ <url> [<purpose>] ])
Use this macro to set up information about the named package, which
can then be displayed via ``feature_summary()``. This can be done either
directly in the Find-module or in the project which uses the module
after the :command:`find_package` call. The features for which information
can be set are added automatically by the ``find_package()`` command.
#]=======================================================================]
function(SET_PACKAGE_INFO _name _desc)
unset(_url)
unset(_purpose)
if(ARGC GREATER 2)
set(_url "${ARGV2}")
endif()
if(ARGC GREATER 3)
set(_purpose "${ARGV3}")
endif()
set_property(GLOBAL PROPERTY _CMAKE_${_name}_DESCRIPTION "${_desc}" )
if(NOT _url STREQUAL "")
set_property(GLOBAL PROPERTY _CMAKE_${_name}_URL "${_url}" )
endif()
if(NOT _purpose STREQUAL "")
set_property(GLOBAL APPEND PROPERTY _CMAKE_${_name}_PURPOSE "${_purpose}" )
endif()
endfunction()
#[=======================================================================[.rst:
.. command:: set_feature_info
::
set_feature_info(<name> <description> [<url>])
Does the same as::
set_package_info(<name> <description> <url>)
#]=======================================================================]
function(SET_FEATURE_INFO)
SET_PACKAGE_INFO(${ARGN})
endfunction()
#[=======================================================================[.rst:
.. command:: print_enabled_features
::
print_enabled_features()
Does the same as
.. code-block:: cmake
feature_summary(WHAT ENABLED_FEATURES DESCRIPTION "Enabled features:")
#]=======================================================================]
function(PRINT_ENABLED_FEATURES)
FEATURE_SUMMARY(WHAT ENABLED_FEATURES DESCRIPTION "Enabled features:")
endfunction()
#[=======================================================================[.rst:
.. command:: print_disabled_features
::
print_disabled_features()
Does the same as
.. code-block:: cmake
feature_summary(WHAT DISABLED_FEATURES DESCRIPTION "Disabled features:")
#]=======================================================================]
function(PRINT_DISABLED_FEATURES)
FEATURE_SUMMARY(WHAT DISABLED_FEATURES DESCRIPTION "Disabled features:")
endfunction()