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CATKIN_IGNORE
is a bit underdocumented, but the tutorial you link actually seems to contain the answer to your question:
CATKIN_IGNORE -- Keeps catkin from walking this directory
In other words: a CATKIN_IGNORE
file in the build
directory makes Catkin (ie: catkin_make
, catkin_make_isolated
, but also catkin
from catkin_tools
) ignore that specific directory.
This works for other directories as well.
Related REP: REP-128: Naming Conventions for Catkin Based Workspaces.
Related ROS Answers question: #q208180.