summaryrefslogtreecommitdiffstats
path: root/Help/command/option.rst
diff options
context:
space:
mode:
Diffstat (limited to 'Help/command/option.rst')
-rw-r--r--Help/command/option.rst4
1 files changed, 3 insertions, 1 deletions
diff --git a/Help/command/option.rst b/Help/command/option.rst
index 91cd0a7..4fabb87 100644
--- a/Help/command/option.rst
+++ b/Help/command/option.rst
@@ -9,7 +9,9 @@ Provides an option that the user can optionally select.
[initial value])
Provide an option for the user to select as ``ON`` or ``OFF``. If no
-initial value is provided, ``OFF`` is used.
+initial value is provided, ``OFF`` is used. If the option is already
+set as a normal variable then the command does nothing
+(see policy :policy:`CMP0077`).
If you have options that depend on the values of other options, see
the module help for :module:`CMakeDependentOption`.