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authorRobert Maynard <robert.maynard@kitware.com>2018-11-13 14:39:27 (GMT)
committerBrad King <brad.king@kitware.com>2019-03-15 14:24:47 (GMT)
commit9bede5c4cecd71fba7ce6a0687c4a68e1c84a54b (patch)
tree57e94c1e43b25ea3706b55cccff48d57b25dfc6d /Help/variable
parent0df31d99ae44e1e151feb4df977a4332833ea872 (diff)
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export: Disable PACKAGE mode user package registry by default
The user package registry populated by the `export()` command causes side effects outside the build and source directories. Such effects should be opt-in rather than op-out. Introduce a policy to change default behavior of `export(PACKAGE)` to do nothing.
Diffstat (limited to 'Help/variable')
-rw-r--r--Help/variable/CMAKE_EXPORT_NO_PACKAGE_REGISTRY.rst9
-rw-r--r--Help/variable/CMAKE_EXPORT_PACKAGE_REGISTRY.rst15
2 files changed, 22 insertions, 2 deletions
diff --git a/Help/variable/CMAKE_EXPORT_NO_PACKAGE_REGISTRY.rst b/Help/variable/CMAKE_EXPORT_NO_PACKAGE_REGISTRY.rst
index ee109ba..768ed64 100644
--- a/Help/variable/CMAKE_EXPORT_NO_PACKAGE_REGISTRY.rst
+++ b/Help/variable/CMAKE_EXPORT_NO_PACKAGE_REGISTRY.rst
@@ -1,11 +1,16 @@
CMAKE_EXPORT_NO_PACKAGE_REGISTRY
--------------------------------
-Disable the :command:`export(PACKAGE)` command.
+Disable the :command:`export(PACKAGE)` command when :policy:`CMP0090`
+is not set to ``NEW``.
In some cases, for example for packaging and for system wide
installations, it is not desirable to write the user package registry.
-If the :variable:`CMAKE_EXPORT_NO_PACKAGE_REGISTRY` variable is enabled,
+If the ``CMAKE_EXPORT_NO_PACKAGE_REGISTRY`` variable is enabled,
the :command:`export(PACKAGE)` command will do nothing.
+If :policy:`CMP0090` is set to ``NEW`` this variable does nothing, and the
+:variable:`CMAKE_EXPORT_PACKAGE_REGISTRY` variable controls the behavior
+instead.
+
See also :ref:`Disabling the Package Registry`.
diff --git a/Help/variable/CMAKE_EXPORT_PACKAGE_REGISTRY.rst b/Help/variable/CMAKE_EXPORT_PACKAGE_REGISTRY.rst
new file mode 100644
index 0000000..3476a19
--- /dev/null
+++ b/Help/variable/CMAKE_EXPORT_PACKAGE_REGISTRY.rst
@@ -0,0 +1,15 @@
+CMAKE_EXPORT_PACKAGE_REGISTRY
+-----------------------------
+
+Enables the :command:`export(PACKAGE)` command when :policy:`CMP0090`
+is set to ``NEW``.
+
+The :command:`export(PACKAGE)` command does nothing by default. In some cases
+it is desirable to write to the user package registry, so the
+``CMAKE_EXPORT_PACKAGE_REGISTRY`` variable may be set to enable it.
+
+If :policy:`CMP0090` is *not* set to ``NEW`` this variable does nothing, and
+the :variable:`CMAKE_EXPORT_NO_PACKAGE_REGISTRY` variable controls the behavior
+instead.
+
+See also :ref:`Disabling the Package Registry`.