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CMake/Help/variable/CMAKE_PROJECT_VERSION.rst
Alex Turbov af1c48871c CPack: Use project version as default for CPACK_PACKAGE_VERSION
* Introduce `CMAKE_PROJECT_VERSION` and the corresponsing components:
  `CMAKE_PROJECT_VERSION_MAJOR`, `CMAKE_PROJECT_VERSION_MINOR`,
  `CMAKE_PROJECT_VERSION_PATCH` and `CMAKE_PROJECT_VERSION_TWEAK`.

* `CPack` module use `CMAKE_PROJECT_VERSION_MAJOR`,
  `CMAKE_PROJECT_VERSION_MINOR` and `CMAKE_PROJECT_VERSION_PATCH`
  to initialize corresponsing CPack variables.
2018-05-03 08:26:03 +10:00

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CMAKE_PROJECT_VERSION
---------------------
The version of the top level project.
This variable holds the version of the project as specified in the top
level CMakeLists.txt file by a :command:`project` command. In the event that
the top level CMakeLists.txt contains multiple :command:`project` calls,
the most recently called one from that top level CMakeLists.txt will determine
the value that ``CMAKE_PROJECT_VERSION`` contains. For example, consider
the following top level CMakeLists.txt:
.. code-block:: cmake
cmake_minimum_required(VERSION 3.0)
project(First VERSION 1.2.3)
project(Second VERSION 3.4.5)
add_subdirectory(sub)
project(Third VERSION 6.7.8)
And ``sub/CMakeLists.txt`` with the following contents:
.. code-block:: cmake
project(SubProj VERSION 1)
message("CMAKE_PROJECT_VERSION = ${CMAKE_PROJECT_VERSION}")
The most recently seen :command:`project` command from the top level
CMakeLists.txt would be ``project(Second ...)``, so this will print::
CMAKE_PROJECT_VERSION = 3.4.5
To obtain the version from the most recent call to :command:`project` in
the current directory scope or above, see the :variable:`PROJECT_VERSION`
variable.