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authorMichael Hirsch <scivision@users.noreply.gitlab.kitware.com>2021-07-05 15:37:02 (GMT)
committerBrad King <brad.king@kitware.com>2021-07-08 13:37:37 (GMT)
commit2df4badc5f5902ae6808cb3c4b0c3c8484686b5d (patch)
tree5a29b5adc7fb182c443f5e237eb46b9da3fbb279
parenteb692af623379085169229fe5c2c9d3fba3a020d (diff)
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Help: Note PROJECT_IS_TOP_LEVEL behavior w.r.t. ExternalProject
Extend the documentation added by commit 96a7040107 (project: Define variables indicating whether project is top level, 2021-03-24, v3.21.0-rc1~443^2) to give some examples of how the variables are set in each context.
-rw-r--r--Help/variable/PROJECT-NAME_IS_TOP_LEVEL.rst10
-rw-r--r--Help/variable/PROJECT_IS_TOP_LEVEL.rst10
2 files changed, 20 insertions, 0 deletions
diff --git a/Help/variable/PROJECT-NAME_IS_TOP_LEVEL.rst b/Help/variable/PROJECT-NAME_IS_TOP_LEVEL.rst
index 953e978..6718ecf 100644
--- a/Help/variable/PROJECT-NAME_IS_TOP_LEVEL.rst
+++ b/Help/variable/PROJECT-NAME_IS_TOP_LEVEL.rst
@@ -9,3 +9,13 @@ level ``CMakeLists.txt`` file.
To obtain the value from the most recent call to :command:`project` in
the current directory scope or above, see the
:variable:`PROJECT_IS_TOP_LEVEL` variable.
+
+The variable value will be true in:
+
+* the top-level directory of the project
+* the top-level directory of an external project added by :module:`ExternalProject`
+
+The variable value will be false in:
+
+* a directory added by :command:`add_subdirectory`
+* a directory added by :module:`FetchContent`
diff --git a/Help/variable/PROJECT_IS_TOP_LEVEL.rst b/Help/variable/PROJECT_IS_TOP_LEVEL.rst
index e5eb6c1..ad61fec 100644
--- a/Help/variable/PROJECT_IS_TOP_LEVEL.rst
+++ b/Help/variable/PROJECT_IS_TOP_LEVEL.rst
@@ -19,3 +19,13 @@ options:
if(PROJECT_IS_TOP_LEVEL)
include(CTest)
endif()
+
+The variable value will be true in:
+
+* the top-level directory of the project
+* the top-level directory of an external project added by :module:`ExternalProject`
+
+The variable value will be false in:
+
+* a directory added by :command:`add_subdirectory`
+* a directory added by :module:`FetchContent`