# CMAKE_PROJECT_DESCRIPTION

Added in version 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 `project()` command. In the event that the top level CMakeLists.txt contains multiple `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:

    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:

    project(SubProj DESCRIPTION "I am SubProj")
    message("CMAKE_PROJECT_DESCRIPTION = ${CMAKE_PROJECT_DESCRIPTION}")

The most recently seen `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 `project()` in the current directory scope or above, see the `PROJECT_DESCRIPTION` variable.