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Update Ament-CMake-Documentation.rst #5639

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2 changes: 1 addition & 1 deletion source/How-To-Guides/Ament-CMake-Documentation.rst
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Expand Up @@ -30,7 +30,7 @@ The basic outline of the ``CMakeLists.txt`` of an ament package contains:

.. code-block:: cmake

cmake_minimum_required(VERSION 3.8)
cmake_minimum_required(VERSION 3.20)
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you are targeting humble I think the version is right here

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I think you're right that this version is fine for Humble.

REP 2000 lists a bunch of CMake versions for Humble for all the target platforms, and they're all definitely > 3.8: https://www.ros.org/reps/rep-2000.html#humble-hawksbill-may-2022-may-2027. However, it's not that CMake 3.8 is necessarily deprecated: I believe it's actually about declaring a minimum version that's too low (e.g., 3.8) with a newer version of CMake, but Humble (Ubuntu 22.04) has an older version of CMake.

Then I'd just leave this as-is.

project(my_project)

ament_package()
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