is in an existing project handled by \cmake
and you want the new package to be part of your existing project.
You will have to create your new package within the source tree of your
-project and add a \texttt{SUBDIRS} command in the \texttt{CMakeLists.txt}
+project and add a \texttt{ADD_SUBDIRECTORY} command in the \texttt{CMakeLists.txt}
file of the parent directory of your package.
\item You do not have an already existing project (you want
to create the new boxes from scratch) or you want/are imposed