mirror of
https://github.com/Detanup01/gbe_fork.git
synced 2024-12-02 23:35:37 +08:00
183 lines
6.5 KiB
ReStructuredText
183 lines
6.5 KiB
ReStructuredText
project
|
|
-------
|
|
|
|
Set the name of the project.
|
|
|
|
Synopsis
|
|
^^^^^^^^
|
|
|
|
.. code-block:: cmake
|
|
|
|
project(<PROJECT-NAME> [<language-name>...])
|
|
project(<PROJECT-NAME>
|
|
[VERSION <major>[.<minor>[.<patch>[.<tweak>]]]]
|
|
[DESCRIPTION <project-description-string>]
|
|
[HOMEPAGE_URL <url-string>]
|
|
[LANGUAGES <language-name>...])
|
|
|
|
Sets the name of the project, and stores it in the variable
|
|
:variable:`PROJECT_NAME`. When called from the top-level
|
|
``CMakeLists.txt`` also stores the project name in the
|
|
variable :variable:`CMAKE_PROJECT_NAME`.
|
|
|
|
Also sets the variables:
|
|
|
|
:variable:`PROJECT_SOURCE_DIR`, :variable:`<PROJECT-NAME>_SOURCE_DIR`
|
|
Absolute path to the source directory for the project.
|
|
|
|
:variable:`PROJECT_BINARY_DIR`, :variable:`<PROJECT-NAME>_BINARY_DIR`
|
|
Absolute path to the binary directory for the project.
|
|
|
|
:variable:`PROJECT_IS_TOP_LEVEL`, :variable:`<PROJECT-NAME>_IS_TOP_LEVEL`
|
|
.. versionadded:: 3.21
|
|
|
|
Boolean value indicating whether the project is top-level.
|
|
|
|
Further variables are set by the optional arguments described in the following.
|
|
If any of these arguments is not used, then the corresponding variables are
|
|
set to the empty string.
|
|
|
|
Options
|
|
^^^^^^^
|
|
|
|
The options are:
|
|
|
|
``VERSION <version>``
|
|
Optional; may not be used unless policy :policy:`CMP0048` is
|
|
set to ``NEW``.
|
|
|
|
Takes a ``<version>`` argument composed of non-negative integer components,
|
|
i.e. ``<major>[.<minor>[.<patch>[.<tweak>]]]``,
|
|
and sets the variables
|
|
|
|
* :variable:`PROJECT_VERSION`,
|
|
:variable:`<PROJECT-NAME>_VERSION`
|
|
* :variable:`PROJECT_VERSION_MAJOR`,
|
|
:variable:`<PROJECT-NAME>_VERSION_MAJOR`
|
|
* :variable:`PROJECT_VERSION_MINOR`,
|
|
:variable:`<PROJECT-NAME>_VERSION_MINOR`
|
|
* :variable:`PROJECT_VERSION_PATCH`,
|
|
:variable:`<PROJECT-NAME>_VERSION_PATCH`
|
|
* :variable:`PROJECT_VERSION_TWEAK`,
|
|
:variable:`<PROJECT-NAME>_VERSION_TWEAK`.
|
|
|
|
.. versionadded:: 3.12
|
|
When the ``project()`` command is called from the top-level
|
|
``CMakeLists.txt``, then the version is also stored in the variable
|
|
:variable:`CMAKE_PROJECT_VERSION`.
|
|
|
|
``DESCRIPTION <project-description-string>``
|
|
.. versionadded:: 3.9
|
|
|
|
Optional.
|
|
Sets the variables
|
|
|
|
* :variable:`PROJECT_DESCRIPTION`, :variable:`<PROJECT-NAME>_DESCRIPTION`
|
|
|
|
to ``<project-description-string>``.
|
|
It is recommended that this description is a relatively short string,
|
|
usually no more than a few words.
|
|
|
|
When the ``project()`` command is called from the top-level ``CMakeLists.txt``,
|
|
then the description is also stored in the variable :variable:`CMAKE_PROJECT_DESCRIPTION`.
|
|
|
|
.. versionadded:: 3.12
|
|
Added the ``<PROJECT-NAME>_DESCRIPTION`` variable.
|
|
|
|
``HOMEPAGE_URL <url-string>``
|
|
.. versionadded:: 3.12
|
|
|
|
Optional.
|
|
Sets the variables
|
|
|
|
* :variable:`PROJECT_HOMEPAGE_URL`, :variable:`<PROJECT-NAME>_HOMEPAGE_URL`
|
|
|
|
to ``<url-string>``, which should be the canonical home URL for the project.
|
|
|
|
When the ``project()`` command is called from the top-level ``CMakeLists.txt``,
|
|
then the URL also is stored in the variable :variable:`CMAKE_PROJECT_HOMEPAGE_URL`.
|
|
|
|
``LANGUAGES <language-name>...``
|
|
Optional.
|
|
Can also be specified without ``LANGUAGES`` keyword per the first, short signature.
|
|
|
|
Selects which programming languages are needed to build the project.
|
|
|
|
.. include:: SUPPORTED_LANGUAGES.txt
|
|
|
|
By default ``C`` and ``CXX`` are enabled if no language options are given.
|
|
Specify language ``NONE``, or use the ``LANGUAGES`` keyword and list no languages,
|
|
to skip enabling any languages.
|
|
|
|
The variables set through the ``VERSION``, ``DESCRIPTION`` and ``HOMEPAGE_URL``
|
|
options are intended for use as default values in package metadata and documentation.
|
|
|
|
.. _`Code Injection`:
|
|
|
|
Code Injection
|
|
^^^^^^^^^^^^^^
|
|
|
|
A number of variables can be defined by the user to specify files to include
|
|
at different points during the execution of the ``project()`` command.
|
|
The following outlines the steps performed during a ``project()`` call:
|
|
|
|
* .. versionadded:: 3.15
|
|
For every ``project()`` call regardless of the project
|
|
name, include the file named by :variable:`CMAKE_PROJECT_INCLUDE_BEFORE`,
|
|
if set.
|
|
|
|
* .. versionadded:: 3.17
|
|
If the ``project()`` command specifies ``<PROJECT-NAME>`` as its project
|
|
name, include the file named by
|
|
:variable:`CMAKE_PROJECT_<PROJECT-NAME>_INCLUDE_BEFORE`, if set.
|
|
|
|
* Set the various project-specific variables detailed in the `Synopsis`_
|
|
and `Options`_ sections above.
|
|
|
|
* For the very first ``project()`` call only:
|
|
|
|
* If :variable:`CMAKE_TOOLCHAIN_FILE` is set, read it at least once.
|
|
It may be read multiple times and it may also be read again when
|
|
enabling languages later (see below).
|
|
|
|
* Set the variables describing the host and target platforms.
|
|
Language-specific variables might or might not be set at this point.
|
|
On the first run, the only language-specific variables that might be
|
|
defined are those a toolchain file may have set. On subsequent runs,
|
|
language-specific variables cached from a previous run may be set.
|
|
|
|
* .. versionadded:: 3.24
|
|
Include each file listed in :variable:`CMAKE_PROJECT_TOP_LEVEL_INCLUDES`,
|
|
if set. The variable is ignored by CMake thereafter.
|
|
|
|
* Enable any languages specified in the call, or the default languages if
|
|
none were provided. The toolchain file may be re-read when enabling a
|
|
language for the first time.
|
|
|
|
* .. versionadded:: 3.15
|
|
For every ``project()`` call regardless of the project
|
|
name, include the file named by :variable:`CMAKE_PROJECT_INCLUDE`,
|
|
if set.
|
|
|
|
* If the ``project()`` command specifies ``<PROJECT-NAME>`` as its project
|
|
name, include the file named by
|
|
:variable:`CMAKE_PROJECT_<PROJECT-NAME>_INCLUDE`, if set.
|
|
|
|
Usage
|
|
^^^^^
|
|
|
|
The top-level ``CMakeLists.txt`` file for a project must contain a
|
|
literal, direct call to the ``project()`` command; loading one
|
|
through the :command:`include` command is not sufficient. If no such
|
|
call exists, CMake will issue a warning and pretend there is a
|
|
``project(Project)`` at the top to enable the default languages
|
|
(``C`` and ``CXX``).
|
|
|
|
.. note::
|
|
Call the ``project()`` command near the top of the top-level
|
|
``CMakeLists.txt``, but *after* calling :command:`cmake_minimum_required`.
|
|
It is important to establish version and policy settings before invoking
|
|
other commands whose behavior they may affect and for this reason the
|
|
``project()`` command will issue a warning if this order is not kept.
|
|
See also policy :policy:`CMP0000`.
|