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The homepage URL of the top level project.
This variable holds the homepage URL 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_HOMEPAGE_URL`` contains. For example, consider
the following top level CMakeLists.txt:
.. code-block:: cmake
cmake_minimum_required(VERSION 3.0)
project(First HOMEPAGE_URL "")
project(Second HOMEPAGE_URL "")
project(Third HOMEPAGE_URL "")
And ``sub/CMakeLists.txt`` with the following contents:
.. code-block:: cmake
project(SubProj HOMEPAGE_URL "")
The most recently seen :command:`project` command from the top level
CMakeLists.txt would be ``project(Second ...)``, so this will print::
To obtain the homepage URL from the most recent call to :command:`project` in
the current directory scope or above, see the :variable:`PROJECT_HOMEPAGE_URL`