1<PROJECT-NAME>_IS_TOP_LEVEL
2---------------------------
3
4.. versionadded:: 3.21
5
6A boolean variable indicating whether the named project was called in a top
7level ``CMakeLists.txt`` file.
8
9To obtain the value from the most recent call to :command:`project` in
10the current directory scope or above, see the
11:variable:`PROJECT_IS_TOP_LEVEL` variable.
12
13The variable value will be true in:
14
15* the top-level directory of the project
16* the top-level directory of an external project added by :module:`ExternalProject`
17
18The variable value will be false in:
19
20* a directory added by :command:`add_subdirectory`
21* a directory added by :module:`FetchContent`
22