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cmake/Help/variable/CMAKE_PROJECT_DESCRIPTION.rst

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CMAKE_PROJECT_DESCRIPTION
-------------------------
.. versionadded:: 3.9
The description of the top level project.
This variable holds the description 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_DESCRIPTION`` contains. For example, consider
the following top level CMakeLists.txt:
.. code-block:: cmake
cmake_minimum_required(VERSION 3.0)
project(First DESCRIPTION "I am First")
project(Second DESCRIPTION "I am Second")
add_subdirectory(sub)
project(Third DESCRIPTION "I am Third")
And ``sub/CMakeLists.txt`` with the following contents:
.. code-block:: cmake
project(SubProj DESCRIPTION "I am SubProj")
message("CMAKE_PROJECT_DESCRIPTION = ${CMAKE_PROJECT_DESCRIPTION}")
The most recently seen :command:`project` command from the top level
CMakeLists.txt would be ``project(Second ...)``, so this will print::
CMAKE_PROJECT_DESCRIPTION = I am Second
To obtain the description from the most recent call to :command:`project` in
the current directory scope or above, see the :variable:`PROJECT_DESCRIPTION`
variable.