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-rw-r--r--Help/variable/CMAKE_SOURCE_DIR.rst5
1 files changed, 5 insertions, 0 deletions
diff --git a/Help/variable/CMAKE_SOURCE_DIR.rst b/Help/variable/CMAKE_SOURCE_DIR.rst
index 3df0226..416fbe1 100644
--- a/Help/variable/CMAKE_SOURCE_DIR.rst
+++ b/Help/variable/CMAKE_SOURCE_DIR.rst
@@ -6,3 +6,8 @@ The path to the top level of the source tree.
This is the full path to the top level of the current CMake source
tree. For an in-source build, this would be the same as
:variable:`CMAKE_BINARY_DIR`.
+
+When run in -P script mode, CMake sets the variables
+:variable:`CMAKE_BINARY_DIR`, :variable:`CMAKE_SOURCE_DIR`,
+:variable:`CMAKE_CURRENT_BINARY_DIR` and
+:variable:`CMAKE_CURRENT_SOURCE_DIR` to the current working directory.