You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
541 lines
24 KiB
541 lines
24 KiB
find_package
|
|
------------
|
|
|
|
.. only:: html
|
|
|
|
.. contents::
|
|
|
|
Find an external project, and load its settings.
|
|
|
|
.. _`basic signature`:
|
|
|
|
Basic Signature and Module Mode
|
|
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
.. code-block:: cmake
|
|
|
|
find_package(<PackageName> [version] [EXACT] [QUIET] [MODULE]
|
|
[REQUIRED] [[COMPONENTS] [components...]]
|
|
[OPTIONAL_COMPONENTS components...]
|
|
[NO_POLICY_SCOPE])
|
|
|
|
Finds and loads settings from an external project. ``<PackageName>_FOUND``
|
|
will be set to indicate whether the package was found. When the
|
|
package is found package-specific information is provided through
|
|
variables and :ref:`Imported Targets` documented by the package itself. The
|
|
``QUIET`` option disables informational messages, including those indicating
|
|
that the package cannot be found if it is not ``REQUIRED``. The ``REQUIRED``
|
|
option stops processing with an error message if the package cannot be found.
|
|
|
|
A package-specific list of required components may be listed after the
|
|
``COMPONENTS`` option (or after the ``REQUIRED`` option if present).
|
|
Additional optional components may be listed after
|
|
``OPTIONAL_COMPONENTS``. Available components and their influence on
|
|
whether a package is considered to be found are defined by the target
|
|
package.
|
|
|
|
.. _FIND_PACKAGE_VERSION_FORMAT:
|
|
|
|
The ``[version]`` argument requests a version with which the package found
|
|
should be compatible. There are two possible forms in which it may be
|
|
specified:
|
|
|
|
* A single version with the format ``major[.minor[.patch[.tweak]]]``.
|
|
* A version range with the format ``versionMin...[<]versionMax`` where
|
|
``versionMin`` and ``versionMax`` have the same format as the single
|
|
version. By default, both end points are included. By specifying ``<``,
|
|
the upper end point will be excluded. Version ranges are only supported
|
|
with CMake 3.19 or later.
|
|
|
|
The ``EXACT`` option requests that the version be matched exactly. This option
|
|
is incompatible with the specification of a version range.
|
|
|
|
If no ``[version]`` and/or component list is given to a recursive invocation
|
|
inside a find-module, the corresponding arguments are forwarded
|
|
automatically from the outer call (including the ``EXACT`` flag for
|
|
``[version]``). Version support is currently provided only on a
|
|
package-by-package basis (see the `Version Selection`_ section below).
|
|
When a version range is specified but the package is only designed to expect
|
|
a single version, the package will ignore the upper end point of the range and
|
|
only take the single version at the lower end of the range into account.
|
|
|
|
See the :command:`cmake_policy` command documentation for discussion
|
|
of the ``NO_POLICY_SCOPE`` option.
|
|
|
|
The command has two modes by which it searches for packages: "Module"
|
|
mode and "Config" mode. The above signature selects Module mode.
|
|
If no module is found the command falls back to Config mode, described
|
|
below. This fall back is disabled if the ``MODULE`` option is given.
|
|
|
|
In Module mode, CMake searches for a file called ``Find<PackageName>.cmake``.
|
|
The file is first searched in the :variable:`CMAKE_MODULE_PATH`,
|
|
then among the :ref:`Find Modules` provided by the CMake installation.
|
|
If the file is found, it is read and processed by CMake. It is responsible
|
|
for finding the package, checking the version, and producing any needed
|
|
messages. Some find-modules provide limited or no support for versioning;
|
|
check the module documentation.
|
|
|
|
If the ``MODULE`` option is not specified in the above signature,
|
|
CMake first searches for the package using Module mode. Then, if the
|
|
package is not found, it searches again using Config mode. A user
|
|
may set the variable :variable:`CMAKE_FIND_PACKAGE_PREFER_CONFIG` to
|
|
``TRUE`` to direct CMake first search using Config mode before falling
|
|
back to Module mode.
|
|
|
|
Full Signature and Config Mode
|
|
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
User code should generally look for packages using the above `basic
|
|
signature`_. The remainder of this command documentation specifies the
|
|
full command signature and details of the search process. Project
|
|
maintainers wishing to provide a package to be found by this command
|
|
are encouraged to read on.
|
|
|
|
The complete Config mode command signature is
|
|
|
|
.. code-block:: cmake
|
|
|
|
find_package(<PackageName> [version] [EXACT] [QUIET]
|
|
[REQUIRED] [[COMPONENTS] [components...]]
|
|
[OPTIONAL_COMPONENTS components...]
|
|
[CONFIG|NO_MODULE]
|
|
[NO_POLICY_SCOPE]
|
|
[NAMES name1 [name2 ...]]
|
|
[CONFIGS config1 [config2 ...]]
|
|
[HINTS path1 [path2 ... ]]
|
|
[PATHS path1 [path2 ... ]]
|
|
[PATH_SUFFIXES suffix1 [suffix2 ...]]
|
|
[NO_DEFAULT_PATH]
|
|
[NO_PACKAGE_ROOT_PATH]
|
|
[NO_CMAKE_PATH]
|
|
[NO_CMAKE_ENVIRONMENT_PATH]
|
|
[NO_SYSTEM_ENVIRONMENT_PATH]
|
|
[NO_CMAKE_PACKAGE_REGISTRY]
|
|
[NO_CMAKE_BUILDS_PATH] # Deprecated; does nothing.
|
|
[NO_CMAKE_SYSTEM_PATH]
|
|
[NO_CMAKE_SYSTEM_PACKAGE_REGISTRY]
|
|
[CMAKE_FIND_ROOT_PATH_BOTH |
|
|
ONLY_CMAKE_FIND_ROOT_PATH |
|
|
NO_CMAKE_FIND_ROOT_PATH])
|
|
|
|
The ``CONFIG`` option, the synonymous ``NO_MODULE`` option, or the use
|
|
of options not specified in the `basic signature`_ all enforce pure Config
|
|
mode. In pure Config mode, the command skips Module mode search and
|
|
proceeds at once with Config mode search.
|
|
|
|
Config mode search attempts to locate a configuration file provided by the
|
|
package to be found. A cache entry called ``<PackageName>_DIR`` is created to
|
|
hold the directory containing the file. By default the command
|
|
searches for a package with the name ``<PackageName>``. If the ``NAMES`` option
|
|
is given the names following it are used instead of ``<PackageName>``.
|
|
The command searches for a file called ``<PackageName>Config.cmake`` or
|
|
``<lower-case-package-name>-config.cmake`` for each name specified.
|
|
A replacement set of possible configuration file names may be given
|
|
using the ``CONFIGS`` option. The search procedure is specified below.
|
|
Once found, the configuration file is read and processed by CMake.
|
|
Since the file is provided by the package it already knows the
|
|
location of package contents. The full path to the configuration file
|
|
is stored in the cmake variable ``<PackageName>_CONFIG``.
|
|
|
|
All configuration files which have been considered by CMake while
|
|
searching for an installation of the package with an appropriate
|
|
version are stored in the cmake variable ``<PackageName>_CONSIDERED_CONFIGS``,
|
|
the associated versions in ``<PackageName>_CONSIDERED_VERSIONS``.
|
|
|
|
If the package configuration file cannot be found CMake will generate
|
|
an error describing the problem unless the ``QUIET`` argument is
|
|
specified. If ``REQUIRED`` is specified and the package is not found a
|
|
fatal error is generated and the configure step stops executing. If
|
|
``<PackageName>_DIR`` has been set to a directory not containing a
|
|
configuration file CMake will ignore it and search from scratch.
|
|
|
|
Package maintainers providing CMake package configuration files are
|
|
encouraged to name and install them such that the `Search Procedure`_
|
|
outlined below will find them without requiring use of additional options.
|
|
|
|
Version Selection
|
|
^^^^^^^^^^^^^^^^^
|
|
|
|
When the ``[version]`` argument is given, Config mode will only find a
|
|
version of the package that claims compatibility with the requested
|
|
version (see :ref:`format specification <FIND_PACKAGE_VERSION_FORMAT>`). If the
|
|
``EXACT`` option is given, only a version of the package claiming an exact match
|
|
of the requested version may be found. CMake does not establish any
|
|
convention for the meaning of version numbers. Package version
|
|
numbers are checked by "version" files provided by the packages
|
|
themselves. For a candidate package configuration file
|
|
``<config-file>.cmake`` the corresponding version file is located next
|
|
to it and named either ``<config-file>-version.cmake`` or
|
|
``<config-file>Version.cmake``. If no such version file is available
|
|
then the configuration file is assumed to not be compatible with any
|
|
requested version. A basic version file containing generic version
|
|
matching code can be created using the
|
|
:module:`CMakePackageConfigHelpers` module. When a version file
|
|
is found it is loaded to check the requested version number. The
|
|
version file is loaded in a nested scope in which the following
|
|
variables have been defined:
|
|
|
|
``PACKAGE_FIND_NAME``
|
|
The ``<PackageName>``
|
|
``PACKAGE_FIND_VERSION``
|
|
Full requested version string
|
|
``PACKAGE_FIND_VERSION_MAJOR``
|
|
Major version if requested, else 0
|
|
``PACKAGE_FIND_VERSION_MINOR``
|
|
Minor version if requested, else 0
|
|
``PACKAGE_FIND_VERSION_PATCH``
|
|
Patch version if requested, else 0
|
|
``PACKAGE_FIND_VERSION_TWEAK``
|
|
Tweak version if requested, else 0
|
|
``PACKAGE_FIND_VERSION_COUNT``
|
|
Number of version components, 0 to 4
|
|
|
|
When a version range is specified, the above version variables will hold
|
|
values based on the lower end of the version range. This is to preserve
|
|
compatibility with packages that have not been implemented to expect version
|
|
ranges. In addition, the version range will be described by the following
|
|
variables:
|
|
|
|
``PACKAGE_FIND_VERSION_RANGE``
|
|
Full requested version range string
|
|
``PACKAGE_FIND_VERSION_RANGE_MIN``
|
|
This specifies whether the lower end point of the version range should be
|
|
included or excluded. Currently, the only supported value for this variable
|
|
is ``INCLUDE``.
|
|
``PACKAGE_FIND_VERSION_RANGE_MAX``
|
|
This specifies whether the upper end point of the version range should be
|
|
included or excluded. The supported values for this variable are
|
|
``INCLUDE`` and ``EXCLUDE``.
|
|
|
|
``PACKAGE_FIND_VERSION_MIN``
|
|
Full requested version string of the lower end point of the range
|
|
``PACKAGE_FIND_VERSION_MIN_MAJOR``
|
|
Major version of the lower end point if requested, else 0
|
|
``PACKAGE_FIND_VERSION_MIN_MINOR``
|
|
Minor version of the lower end point if requested, else 0
|
|
``PACKAGE_FIND_VERSION_MIN_PATCH``
|
|
Patch version of the lower end point if requested, else 0
|
|
``PACKAGE_FIND_VERSION_MIN_TWEAK``
|
|
Tweak version of the lower end point if requested, else 0
|
|
``PACKAGE_FIND_VERSION_MIN_COUNT``
|
|
Number of version components of the lower end point, 0 to 4
|
|
|
|
``PACKAGE_FIND_VERSION_MAX``
|
|
Full requested version string of the upper end point of the range
|
|
``PACKAGE_FIND_VERSION_MAX_MAJOR``
|
|
Major version of the upper end point if requested, else 0
|
|
``PACKAGE_FIND_VERSION_MAX_MINOR``
|
|
Minor version of the upper end point if requested, else 0
|
|
``PACKAGE_FIND_VERSION_MAX_PATCH``
|
|
Patch version of the upper end point if requested, else 0
|
|
``PACKAGE_FIND_VERSION_MAX_TWEAK``
|
|
Tweak version of the upper end point if requested, else 0
|
|
``PACKAGE_FIND_VERSION_MAX_COUNT``
|
|
Number of version components of the upper end point, 0 to 4
|
|
|
|
Regardless of whether a single version or a version range is specified, the
|
|
variable ``PACKAGE_FIND_VERSION_COMPLETE`` will be defined and will hold
|
|
the full requested version string as specified.
|
|
|
|
The version file checks whether it satisfies the requested version and
|
|
sets these variables:
|
|
|
|
``PACKAGE_VERSION``
|
|
Full provided version string
|
|
``PACKAGE_VERSION_EXACT``
|
|
True if version is exact match
|
|
``PACKAGE_VERSION_COMPATIBLE``
|
|
True if version is compatible
|
|
``PACKAGE_VERSION_UNSUITABLE``
|
|
True if unsuitable as any version
|
|
|
|
These variables are checked by the ``find_package`` command to determine
|
|
whether the configuration file provides an acceptable version. They
|
|
are not available after the ``find_package`` call returns. If the version
|
|
is acceptable the following variables are set:
|
|
|
|
``<PackageName>_VERSION``
|
|
Full provided version string
|
|
``<PackageName>_VERSION_MAJOR``
|
|
Major version if provided, else 0
|
|
``<PackageName>_VERSION_MINOR``
|
|
Minor version if provided, else 0
|
|
``<PackageName>_VERSION_PATCH``
|
|
Patch version if provided, else 0
|
|
``<PackageName>_VERSION_TWEAK``
|
|
Tweak version if provided, else 0
|
|
``<PackageName>_VERSION_COUNT``
|
|
Number of version components, 0 to 4
|
|
|
|
and the corresponding package configuration file is loaded.
|
|
When multiple package configuration files are available whose version files
|
|
claim compatibility with the version requested it is unspecified which
|
|
one is chosen: unless the variable :variable:`CMAKE_FIND_PACKAGE_SORT_ORDER`
|
|
is set no attempt is made to choose a highest or closest version number.
|
|
|
|
To control the order in which ``find_package`` checks for compatibility use
|
|
the two variables :variable:`CMAKE_FIND_PACKAGE_SORT_ORDER` and
|
|
:variable:`CMAKE_FIND_PACKAGE_SORT_DIRECTION`.
|
|
For instance in order to select the highest version one can set
|
|
|
|
.. code-block:: cmake
|
|
|
|
SET(CMAKE_FIND_PACKAGE_SORT_ORDER NATURAL)
|
|
SET(CMAKE_FIND_PACKAGE_SORT_DIRECTION DEC)
|
|
|
|
before calling ``find_package``.
|
|
|
|
Search Procedure
|
|
^^^^^^^^^^^^^^^^
|
|
|
|
CMake constructs a set of possible installation prefixes for the
|
|
package. Under each prefix several directories are searched for a
|
|
configuration file. The tables below show the directories searched.
|
|
Each entry is meant for installation trees following Windows (``W``), UNIX
|
|
(``U``), or Apple (``A``) conventions::
|
|
|
|
<prefix>/ (W)
|
|
<prefix>/(cmake|CMake)/ (W)
|
|
<prefix>/<name>*/ (W)
|
|
<prefix>/<name>*/(cmake|CMake)/ (W)
|
|
<prefix>/(lib/<arch>|lib*|share)/cmake/<name>*/ (U)
|
|
<prefix>/(lib/<arch>|lib*|share)/<name>*/ (U)
|
|
<prefix>/(lib/<arch>|lib*|share)/<name>*/(cmake|CMake)/ (U)
|
|
<prefix>/<name>*/(lib/<arch>|lib*|share)/cmake/<name>*/ (W/U)
|
|
<prefix>/<name>*/(lib/<arch>|lib*|share)/<name>*/ (W/U)
|
|
<prefix>/<name>*/(lib/<arch>|lib*|share)/<name>*/(cmake|CMake)/ (W/U)
|
|
|
|
On systems supporting macOS :prop_tgt:`FRAMEWORK` and :prop_tgt:`BUNDLE`, the
|
|
following directories are searched for Frameworks or Application Bundles
|
|
containing a configuration file::
|
|
|
|
<prefix>/<name>.framework/Resources/ (A)
|
|
<prefix>/<name>.framework/Resources/CMake/ (A)
|
|
<prefix>/<name>.framework/Versions/*/Resources/ (A)
|
|
<prefix>/<name>.framework/Versions/*/Resources/CMake/ (A)
|
|
<prefix>/<name>.app/Contents/Resources/ (A)
|
|
<prefix>/<name>.app/Contents/Resources/CMake/ (A)
|
|
|
|
In all cases the ``<name>`` is treated as case-insensitive and corresponds
|
|
to any of the names specified (``<PackageName>`` or names given by ``NAMES``).
|
|
|
|
Paths with ``lib/<arch>`` are enabled if the
|
|
:variable:`CMAKE_LIBRARY_ARCHITECTURE` variable is set. ``lib*`` includes one
|
|
or more of the values ``lib64``, ``lib32``, ``libx32`` or ``lib`` (searched in
|
|
that order).
|
|
|
|
* Paths with ``lib64`` are searched on 64 bit platforms if the
|
|
:prop_gbl:`FIND_LIBRARY_USE_LIB64_PATHS` property is set to ``TRUE``.
|
|
* Paths with ``lib32`` are searched on 32 bit platforms if the
|
|
:prop_gbl:`FIND_LIBRARY_USE_LIB32_PATHS` property is set to ``TRUE``.
|
|
* Paths with ``libx32`` are searched on platforms using the x32 ABI
|
|
if the :prop_gbl:`FIND_LIBRARY_USE_LIBX32_PATHS` property is set to ``TRUE``.
|
|
* The ``lib`` path is always searched.
|
|
|
|
If ``PATH_SUFFIXES`` is specified, the suffixes are appended to each
|
|
(``W``) or (``U``) directory entry one-by-one.
|
|
|
|
This set of directories is intended to work in cooperation with
|
|
projects that provide configuration files in their installation trees.
|
|
Directories above marked with (``W``) are intended for installations on
|
|
Windows where the prefix may point at the top of an application's
|
|
installation directory. Those marked with (``U``) are intended for
|
|
installations on UNIX platforms where the prefix is shared by multiple
|
|
packages. This is merely a convention, so all (``W``) and (``U``) directories
|
|
are still searched on all platforms. Directories marked with (``A``) are
|
|
intended for installations on Apple platforms. The
|
|
:variable:`CMAKE_FIND_FRAMEWORK` and :variable:`CMAKE_FIND_APPBUNDLE`
|
|
variables determine the order of preference.
|
|
|
|
The set of installation prefixes is constructed using the following
|
|
steps. If ``NO_DEFAULT_PATH`` is specified all ``NO_*`` options are
|
|
enabled.
|
|
|
|
1. .. versionadded:: 3.12
|
|
Search paths specified in the :variable:`<PackageName>_ROOT` CMake
|
|
variable and the :envvar:`<PackageName>_ROOT` environment variable,
|
|
where ``<PackageName>`` is the package to be found.
|
|
The package root variables are maintained as a stack so if
|
|
called from within a find module, root paths from the parent's find
|
|
module will also be searched after paths for the current package.
|
|
This can be skipped if ``NO_PACKAGE_ROOT_PATH`` is passed or by setting
|
|
the :variable:`CMAKE_FIND_USE_PACKAGE_ROOT_PATH` to ``FALSE``.
|
|
See policy :policy:`CMP0074`.
|
|
|
|
2. Search paths specified in cmake-specific cache variables. These
|
|
are intended to be used on the command line with a ``-DVAR=value``.
|
|
The values are interpreted as :ref:`semicolon-separated lists <CMake Language Lists>`.
|
|
This can be skipped if ``NO_CMAKE_PATH`` is passed or by setting the
|
|
:variable:`CMAKE_FIND_USE_CMAKE_PATH` to ``FALSE``:
|
|
|
|
* :variable:`CMAKE_PREFIX_PATH`
|
|
* :variable:`CMAKE_FRAMEWORK_PATH`
|
|
* :variable:`CMAKE_APPBUNDLE_PATH`
|
|
|
|
3. Search paths specified in cmake-specific environment variables.
|
|
These are intended to be set in the user's shell configuration,
|
|
and therefore use the host's native path separator
|
|
(``;`` on Windows and ``:`` on UNIX).
|
|
This can be skipped if ``NO_CMAKE_ENVIRONMENT_PATH`` is passed or by setting
|
|
the :variable:`CMAKE_FIND_USE_CMAKE_ENVIRONMENT_PATH` to ``FALSE``:
|
|
|
|
* ``<PackageName>_DIR``
|
|
* :envvar:`CMAKE_PREFIX_PATH`
|
|
* ``CMAKE_FRAMEWORK_PATH``
|
|
* ``CMAKE_APPBUNDLE_PATH``
|
|
|
|
4. Search paths specified by the ``HINTS`` option. These should be paths
|
|
computed by system introspection, such as a hint provided by the
|
|
location of another item already found. Hard-coded guesses should
|
|
be specified with the ``PATHS`` option.
|
|
|
|
5. Search the standard system environment variables. This can be
|
|
skipped if ``NO_SYSTEM_ENVIRONMENT_PATH`` is passed or by setting the
|
|
:variable:`CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH` to ``FALSE``. Path entries
|
|
ending in ``/bin`` or ``/sbin`` are automatically converted to their
|
|
parent directories:
|
|
|
|
* ``PATH``
|
|
|
|
6. Search paths stored in the CMake :ref:`User Package Registry`.
|
|
This can be skipped if ``NO_CMAKE_PACKAGE_REGISTRY`` is passed or by
|
|
setting the variable :variable:`CMAKE_FIND_USE_PACKAGE_REGISTRY`
|
|
to ``FALSE`` or the deprecated variable
|
|
:variable:`CMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY` to ``TRUE``.
|
|
|
|
See the :manual:`cmake-packages(7)` manual for details on the user
|
|
package registry.
|
|
|
|
7. Search cmake variables defined in the Platform files for the
|
|
current system. This can be skipped if ``NO_CMAKE_SYSTEM_PATH`` is
|
|
passed or by setting the :variable:`CMAKE_FIND_USE_CMAKE_SYSTEM_PATH`
|
|
to ``FALSE``:
|
|
|
|
* :variable:`CMAKE_SYSTEM_PREFIX_PATH`
|
|
* :variable:`CMAKE_SYSTEM_FRAMEWORK_PATH`
|
|
* :variable:`CMAKE_SYSTEM_APPBUNDLE_PATH`
|
|
|
|
The platform paths that these variables contain are locations that
|
|
typically include installed software. An example being ``/usr/local`` for
|
|
UNIX based platforms.
|
|
|
|
8. Search paths stored in the CMake :ref:`System Package Registry`.
|
|
This can be skipped if ``NO_CMAKE_SYSTEM_PACKAGE_REGISTRY`` is passed
|
|
or by setting the :variable:`CMAKE_FIND_USE_SYSTEM_PACKAGE_REGISTRY`
|
|
variable to ``FALSE`` or the deprecated variable
|
|
:variable:`CMAKE_FIND_PACKAGE_NO_SYSTEM_PACKAGE_REGISTRY` to ``TRUE``.
|
|
|
|
See the :manual:`cmake-packages(7)` manual for details on the system
|
|
package registry.
|
|
|
|
9. Search paths specified by the ``PATHS`` option. These are typically
|
|
hard-coded guesses.
|
|
|
|
.. versionadded:: 3.16
|
|
Added the ``CMAKE_FIND_USE_<CATEGORY>_PATH`` variables to globally disable
|
|
various search locations.
|
|
|
|
.. |FIND_XXX| replace:: find_package
|
|
.. |FIND_ARGS_XXX| replace:: <PackageName>
|
|
.. |CMAKE_FIND_ROOT_PATH_MODE_XXX| replace::
|
|
:variable:`CMAKE_FIND_ROOT_PATH_MODE_PACKAGE`
|
|
|
|
.. include:: FIND_XXX_ROOT.txt
|
|
.. include:: FIND_XXX_ORDER.txt
|
|
|
|
By default the value stored in the result variable will be the path at
|
|
which the file is found. The :variable:`CMAKE_FIND_PACKAGE_RESOLVE_SYMLINKS`
|
|
variable may be set to ``TRUE`` before calling ``find_package`` in order
|
|
to resolve symbolic links and store the real path to the file.
|
|
|
|
Every non-REQUIRED ``find_package`` call can be disabled by setting the
|
|
:variable:`CMAKE_DISABLE_FIND_PACKAGE_<PackageName>` variable to ``TRUE``.
|
|
|
|
Package File Interface Variables
|
|
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
When loading a find module or package configuration file ``find_package``
|
|
defines variables to provide information about the call arguments (and
|
|
restores their original state before returning):
|
|
|
|
``CMAKE_FIND_PACKAGE_NAME``
|
|
The ``<PackageName>`` which is searched for
|
|
``<PackageName>_FIND_REQUIRED``
|
|
True if ``REQUIRED`` option was given
|
|
``<PackageName>_FIND_QUIETLY``
|
|
True if ``QUIET`` option was given
|
|
``<PackageName>_FIND_VERSION``
|
|
Full requested version string
|
|
``<PackageName>_FIND_VERSION_MAJOR``
|
|
Major version if requested, else 0
|
|
``<PackageName>_FIND_VERSION_MINOR``
|
|
Minor version if requested, else 0
|
|
``<PackageName>_FIND_VERSION_PATCH``
|
|
Patch version if requested, else 0
|
|
``<PackageName>_FIND_VERSION_TWEAK``
|
|
Tweak version if requested, else 0
|
|
``<PackageName>_FIND_VERSION_COUNT``
|
|
Number of version components, 0 to 4
|
|
``<PackageName>_FIND_VERSION_EXACT``
|
|
True if ``EXACT`` option was given
|
|
``<PackageName>_FIND_COMPONENTS``
|
|
List of requested components
|
|
``<PackageName>_FIND_REQUIRED_<c>``
|
|
True if component ``<c>`` is required,
|
|
false if component ``<c>`` is optional
|
|
|
|
When a version range is specified, the above version variables will hold
|
|
values based on the lower end of the version range. This is to preserve
|
|
compatibility with packages that have not been implemented to expect version
|
|
ranges. In addition, the version range will be described by the following
|
|
variables:
|
|
|
|
``<PackageName>_FIND_VERSION_RANGE``
|
|
Full requested version range string
|
|
``<PackageName>_FIND_VERSION_RANGE_MIN``
|
|
This specifies whether the lower end point of the version range is
|
|
included or excluded. Currently, ``INCLUDE`` is the only supported value.
|
|
``<PackageName>_FIND_VERSION_RANGE_MAX``
|
|
This specifies whether the upper end point of the version range is
|
|
included or excluded. The possible values for this variable are
|
|
``INCLUDE`` or ``EXCLUDE``.
|
|
|
|
``<PackageName>_FIND_VERSION_MIN``
|
|
Full requested version string of the lower end point of the range
|
|
``<PackageName>_FIND_VERSION_MIN_MAJOR``
|
|
Major version of the lower end point if requested, else 0
|
|
``<PackageName>_FIND_VERSION_MIN_MINOR``
|
|
Minor version of the lower end point if requested, else 0
|
|
``<PackageName>_FIND_VERSION_MIN_PATCH``
|
|
Patch version of the lower end point if requested, else 0
|
|
``<PackageName>_FIND_VERSION_MIN_TWEAK``
|
|
Tweak version of the lower end point if requested, else 0
|
|
``<PackageName>_FIND_VERSION_MIN_COUNT``
|
|
Number of version components of the lower end point, 0 to 4
|
|
|
|
``<PackageName>_FIND_VERSION_MAX``
|
|
Full requested version string of the upper end point of the range
|
|
``<PackageName>_FIND_VERSION_MAX_MAJOR``
|
|
Major version of the upper end point if requested, else 0
|
|
``<PackageName>_FIND_VERSION_MAX_MINOR``
|
|
Minor version of the upper end point if requested, else 0
|
|
``<PackageName>_FIND_VERSION_MAX_PATCH``
|
|
Patch version of the upper end point if requested, else 0
|
|
``<PackageName>_FIND_VERSION_MAX_TWEAK``
|
|
Tweak version of the upper end point if requested, else 0
|
|
``<PackageName>_FIND_VERSION_MAX_COUNT``
|
|
Number of version components of the upper end point, 0 to 4
|
|
|
|
Regardless of whether a single version or a version range is specified, the
|
|
variable ``<PackageName>_FIND_VERSION_COMPLETE`` will be defined and will hold
|
|
the full requested version string as specified.
|
|
|
|
In Module mode the loaded find module is responsible to honor the
|
|
request detailed by these variables; see the find module for details.
|
|
In Config mode ``find_package`` handles ``REQUIRED``, ``QUIET``, and
|
|
``[version]`` options automatically but leaves it to the package
|
|
configuration file to handle components in a way that makes sense
|
|
for the package. The package configuration file may set
|
|
``<PackageName>_FOUND`` to false to tell ``find_package`` that component
|
|
requirements are not satisfied.
|