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CMake/Modules/FeatureSummary.cmake
Alex Neundorf b62349cc60 FeatureSummary.cmake: update documentation 
Alex
2011-07-17 21:23:13 +02:00

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CMake
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# - Macros for generating a summary of enabled/disabled features
#
# This module provides the macros feature_summary(), set_package_properties() and
# add_feature_info().
# For compatiblity 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
#
# 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(LibXml2 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 descibing 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(CMakeParseArguments)
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 "${_desc}" )
ENDFUNCTION(ADD_FEATURE_INFO)
FUNCTION(SET_PACKAGE_PROPERTIES _name _props)
IF(NOT "${_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)
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)
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 "${_SPP_TYPE}" )
ENDIF()
ENDFUNCTION(SET_PACKAGE_PROPERTIES)
FUNCTION(_FS_GET_FEATURE_SUMMARY _property _var _includeQuiet)
SET(_type "ANY")
IF("${_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_${_currentFeature}_QUIET)
IF(_isQuiet)
SET(includeThisOne FALSE)
ENDIF()
ENDIF()
IF(includeThisOne)
SET(_currentFeatureText "${_currentFeatureText}\n${_currentFeature}")
GET_PROPERTY(_info GLOBAL PROPERTY _CMAKE_${_currentFeature}_REQUIRED_VERSION)
IF(_info)
SET(_currentFeatureText "${_currentFeatureText} (required version ${_info})")
ENDIF(_info)
GET_PROPERTY(_info GLOBAL PROPERTY _CMAKE_${_currentFeature}_DESCRIPTION)
IF(_info)
SET(_currentFeatureText "${_currentFeatureText} , ${_info}")
ENDIF(_info)
GET_PROPERTY(_info GLOBAL PROPERTY _CMAKE_${_currentFeature}_URL)
IF(_info)
SET(_currentFeatureText "${_currentFeatureText} , <${_info}>")
ENDIF(_info)
GET_PROPERTY(_info GLOBAL PROPERTY _CMAKE_${_currentFeature}_PURPOSE)
FOREACH(_purpose ${_info})
SET(_currentFeatureText "${_currentFeatureText}\n * ${_purpose}")
ENDFOREACH()
ENDIF(includeThisOne)
ENDIF("${_type}" STREQUAL ANY OR "${_type}" STREQUAL "${_currentType}")
ENDFOREACH(_currentFeature)
SET(${_var} "${_currentFeatureText}" PARENT_SCOPE)
ENDFUNCTION(_FS_GET_FEATURE_SUMMARY)
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 WHAT)
SET(multiValueArgs ) # none
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_SUMMAY() 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()
ELSEIF("${_FS_WHAT}" STREQUAL "ALL")
SET(allWhatParts "ENABLED_FEATURES"
"RUNTIME_PACKAGES_FOUND"
"OPTIONAL_PACKAGES_FOUND"
"RECOMMENDED_PACKAGES_FOUND"
"REQUIRED_PACKAGES_FOUND"
"DISABLED_FEATURES"
"RUNTIME_PACKAGES_NOT_FOUND"
"OPTIONAL_PACKAGES_NOT_FOUND"
"RECOMMENDED_PACKAGES_NOT_FOUND"
"REQUIRED_PACKAGES_NOT_FOUND"
)
SET(title_ENABLED_FEATURES "The following features have been enabled:")
SET(title_DISABLED_FEATURES "The following features have been disabled:")
SET(title_OPTIONAL_PACKAGES_FOUND "The following OPTIONAL packages have been found:")
SET(title_OPTIONAL_PACKAGES_NOT_FOUND "The following OPTIONAL packages have not been found:")
SET(title_RECOMMENDED_PACKAGES_FOUND "The following RECOMMENDED packages have been found:")
SET(title_RECOMMENDED_PACKAGES_NOT_FOUND "The following RECOMMENDED packages have not been found:")
SET(title_REQUIRED_PACKAGES_FOUND "The following REQUIRED packages have been found:")
SET(title_REQUIRED_PACKAGES_NOT_FOUND "The following REQUIRED packages have not been found:")
SET(title_RUNTIME_PACKAGES_FOUND "The following RUNTIME packages have been found:")
SET(title_RUNTIME_PACKAGES_NOT_FOUND "The following RUNTIME packages have not been found:")
SET(_fullText "${_FS_DESCRIPTION}")
FOREACH(part ${allWhatParts})
SET(_tmp)
_FS_GET_FEATURE_SUMMARY( ${part} _tmp ${_FS_INCLUDE_QUIET_PACKAGES})
IF(_tmp)
SET(_fullText "${_fullText}\n\n-- ${title_${part}}\n${_tmp}")
IF("${part}" STREQUAL "REQUIRED_PACKAGES_NOT_FOUND")
SET(requiredPackagesNotFound TRUE)
ENDIF()
ENDIF()
ENDFOREACH()
ELSE()
MESSAGE(FATAL_ERROR "The WHAT argument of FEATURE_SUMMARY() is set to ${_FS_WHAT}, which is not a valid value.")
ENDIF()
IF(_FS_FILENAME)
IF(_FS_APPEND)
FILE(APPEND "${_FS_FILENAME}" "${_fullText}")
ELSE(_FS_APPEND)
FILE(WRITE "${_FS_FILENAME}" "${_fullText}")
ENDIF()
ELSE(_FS_FILENAME)
IF(NOT _FS_VAR)
MESSAGE(STATUS "${_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(FEATURE_SUMMARY)
# 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(_url MATCHES ".+")
SET_PROPERTY(GLOBAL PROPERTY _CMAKE_${_name}_URL "${_url}" )
ENDIF()
IF(_purpose MATCHES ".+")
SET_PROPERTY(GLOBAL APPEND PROPERTY _CMAKE_${_name}_PURPOSE "${_purpose}" )
ENDIF()
ENDFUNCTION(SET_PACKAGE_INFO)
FUNCTION(SET_FEATURE_INFO)
SET_PACKAGE_INFO(${ARGN})
ENDFUNCTION(SET_FEATURE_INFO)
FUNCTION(PRINT_ENABLED_FEATURES)
FEATURE_SUMMARY(WHAT ENABLED_FEATURES DESCRIPTION "Enabled features:")
ENDFUNCTION(PRINT_ENABLED_FEATURES)
FUNCTION(PRINT_DISABLED_FEATURES)
FEATURE_SUMMARY(WHAT DISABLED_FEATURES DESCRIPTION "Disabled features:")
ENDFUNCTION(PRINT_DISABLED_FEATURES)
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