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CMake/Modules/FeatureSummary.cmake
Brad King 58b2d760ee Modules: Format documentation to avoid over-long preformatted lines 
Convert several preformatted code block literals that enumerate lists of
options or variables to use reST definition lists instead.  Manually
wrap other long lines in code blocks.
2014-10-22 15:52:31 -04:00

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CMake
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#.rst:
# FeatureSummary
# --------------
#
# Macros for generating a summary of enabled/disabled features
#
#
#
# This module provides the macros feature_summary(),
# set_package_properties() and add_feature_info(). For compatibility it
# also still provides set_package_info(), set_feature_info(),
# print_enabled_features() and print_disabled_features().
#
# These macros can be used to generate a summary of enabled and disabled
# packages and/or feature for a build tree:
#
# ::
#
# -- The following OPTIONAL packages have been found:
# LibXml2 (required version >= 2.4) , XML processing library. , <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.
#
#
#
#
#
# ::
#
# 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:
#
# ::
#
# 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:
#
# ::
#
# feature_summary(WHAT ALL
# FILENAME ${CMAKE_BINARY_DIR}/all.log APPEND)
#
#
#
# Example 2, print the enabled features into the variable
# enabledFeaturesText, including QUIET packages:
#
# ::
#
# feature_summary(WHAT ENABLED_FEATURES
# INCLUDE_QUIET_PACKAGES
# DESCRIPTION "Enabled Features:"
# VAR enabledFeaturesText)
# message(STATUS "${enabledFeaturesText}")
#
#
#
#
#
# ::
#
# 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: this should be the homepage of the package, or something similar.
# Ideally this is set already directly in the Find-module.
#
# DESCRIPTION: A short description what that package is, at most one
# sentence. Ideally this is set already directly in the Find-module.
#
# 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: 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:
#
# ::
#
# find_package(LibXml2)
# set_package_properties(LibXml2 PROPERTIES
# DESCRIPTION "A XML processing library."
# URL "http://xmlsoft.org/")
#
#
#
# ::
#
# set_package_properties(LibXml2 PROPERTIES
# TYPE RECOMMENDED
# PURPOSE "Enables HTML-import in MyWordProcessor")
# ...
# 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" )
#
#
#
# ::
#
# 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:
#
# ::
#
# option(WITH_FOO "Help for foo" ON)
# add_feature_info(Foo WITH_FOO "The Foo feature provides very cool stuff.")
#
#
#
#
#
# The following macros are provided for compatibility with previous
# CMake versions:
#
# ::
#
# 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 find_package() call. The features for which information can
# be set are added automatically by the find_package() command.
#
# ::
#
# PRINT_ENABLED_FEATURES()
#
# Does the same as FEATURE_SUMMARY(WHAT ENABLED_FEATURES DESCRIPTION
# "Enabled features:")
#
# ::
#
# PRINT_DISABLED_FEATURES()
#
# Does the same as FEATURE_SUMMARY(WHAT DISABLED_FEATURES DESCRIPTION
# "Disabled features:")
#
# ::
#
# SET_FEATURE_INFO(<name> <description> [<url>] )
#
# Does the same as SET_PACKAGE_INFO(<name> <description> <url> )
#=============================================================================
# Copyright 2007-2009 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
include("${CMAKE_CURRENT_LIST_DIR}/CMakeParseArguments.cmake")
function(ADD_FEATURE_INFO _name _enabled _desc)
if (${_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()
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 "${_SPP_TYPE}" )
endif()
endfunction()
function(_FS_GET_FEATURE_SUMMARY _property _var _includeQuiet)
set(_type "ANY")
if("${_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})
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)
set(_currentFeatureText "${_currentFeatureText}\n * ${_currentFeature}")
get_property(_info GLOBAL PROPERTY _CMAKE_${_currentFeature}_REQUIRED_VERSION)
if(_info)
set(_currentFeatureText "${_currentFeatureText} (required version ${_info})")
endif()
get_property(_info GLOBAL PROPERTY _CMAKE_${_currentFeature}_DESCRIPTION)
if(_info)
set(_currentFeatureText "${_currentFeatureText} , ${_info}")
endif()
get_property(_info GLOBAL PROPERTY _CMAKE_${_currentFeature}_URL)
if(_info)
set(_currentFeatureText "${_currentFeatureText} , <${_info}>")
endif()
get_property(_info GLOBAL PROPERTY _CMAKE_${_currentFeature}_PURPOSE)
foreach(_purpose ${_info})
set(_currentFeatureText "${_currentFeatureText}\n ${_purpose}")
endforeach()
endif()
endif()
endforeach()
set(${_var} "${_currentFeatureText}" PARENT_SCOPE)
endfunction()
function(FEATURE_SUMMARY)
# CMAKE_PARSE_ARGUMENTS(<prefix> <options> <one_value_keywords> <multi_value_keywords> args...)
set(options APPEND INCLUDE_QUIET_PACKAGES FATAL_ON_MISSING_REQUIRED_PACKAGES)
set(oneValueArgs FILENAME VAR DESCRIPTION)
set(multiValueArgs WHAT)
CMAKE_PARSE_ARGUMENTS(_FS "${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 ${_FS_INCLUDE_QUIET_PACKAGES})
if(_tmp)
set(_fullText "${_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} "${_fullText}" PARENT_SCOPE)
endif()
if(requiredPackagesNotFound AND _FS_FATAL_ON_MISSING_REQUIRED_PACKAGES)
message(FATAL_ERROR "feature_summary() Error: REQUIRED package(s) are missing, aborting CMake run.")
endif()
endfunction()
# The stuff below is only kept for compatibility
function(SET_PACKAGE_INFO _name _desc)
set(_url "${ARGV2}")
set(_purpose "${ARGV3}")
set_property(GLOBAL PROPERTY _CMAKE_${_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 "${_purpose}" )
endif()
endfunction()
function(SET_FEATURE_INFO)
SET_PACKAGE_INFO(${ARGN})
endfunction()
function(PRINT_ENABLED_FEATURES)
FEATURE_SUMMARY(WHAT ENABLED_FEATURES DESCRIPTION "Enabled features:")
endfunction()
function(PRINT_DISABLED_FEATURES)
FEATURE_SUMMARY(WHAT DISABLED_FEATURES DESCRIPTION "Disabled features:")
endfunction()
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