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return
------
Return from a file, directory or function.
::
return()
Returns from a file, directory or function. When this command is
encountered in an included file (via include() or find_package()), it
causes processing of the current file to stop and control is returned
to the including file. If it is encountered in a file which is not
included by another file, e.g. a CMakeLists.txt, control is returned
to the parent directory if there is one. If return is called in a
function, control is returned to the caller of the function. Note
that a macro is not a function and does not handle return like a
function does.
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