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.
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:
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:
include(FeatureSummary)
feature_summary(WHAT ALL
FILENAME ${CMAKE_BINARY_DIR}/all.log APPEND)
Example 2, print the enabled features into the variable enabledFeaturesText, including QUIET packages:
include(FeatureSummary)
feature_summary(WHAT ENABLED_FEATURES
INCLUDE_QUIET_PACKAGES
DESCRIPTION "Enabled Features:"
VAR enabledFeaturesText)
message(STATUS "${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.
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/")
# 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")
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.
set_feature_info(<name> <description> [<url>])
Does the same as:
set_package_info(<name> <description> <url>)
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:")