[Cmake-commits] CMake branch, next, updated. v2.8.12.1-6297-g7e73ba7

[Stephen Kelly]

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- Log -----------------------------------------------------------------
http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=7e73ba7211dfb2e88a954b03d1e08c4f2e213fc4
commit 7e73ba7211dfb2e88a954b03d1e08c4f2e213fc4
Merge: 13732b7 8f849b9
Author:     Stephen Kelly <steveire at gmail.com>
AuthorDate: Fri Dec 20 06:33:36 2013 -0500
Commit:     CMake Topic Stage <kwrobot at kitware.com>
CommitDate: Fri Dec 20 06:33:36 2013 -0500

    Merge topic 'extend-policies-manual' into next
    
    8f849b9 Help: Mention if(POLICY) and NO_POLICY_SCOPE in policies manual.


http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=8f849b90711e0912fa81018058a53eb193dd678c
commit 8f849b90711e0912fa81018058a53eb193dd678c
Author:     Stephen Kelly <steveire at gmail.com>
AuthorDate: Fri Dec 20 12:19:11 2013 +0100
Commit:     Stephen Kelly <steveire at gmail.com>
CommitDate: Fri Dec 20 12:32:43 2013 +0100

    Help: Mention if(POLICY) and NO_POLICY_SCOPE in policies manual.

diff --git a/Help/manual/cmake-policies.7.rst b/Help/manual/cmake-policies.7.rst
index 5e94f89..9e26392 100644
--- a/Help/manual/cmake-policies.7.rst
+++ b/Help/manual/cmake-policies.7.rst
@@ -21,7 +21,21 @@ for a policy, also avoiding the warning.
 The :command:`cmake_minimum_required` command does more than report an
 error if a too-old version of CMake is used to build a project.  It
 also sets all policies introduced in that CMake version or earlier to
-NEW behavior.
+NEW behavior.  To manage policies without increasing the minimum required
+CMake version, the :command:`if(POLICY)` command may be used::
+
+  if(POLICY CMP0990)
+    cmake_policy(SET CMP0990 NEW)
+  endif()
+
+This has the effect of using the NEW behavior with newer CMake releases which
+users may be using and not issuing a compatibility warning.
+
+The setting of a policy is confined in some cases to not propagate to the
+parent scope.  For example, if the files read by the :command:`include` command
+or the :command:`find_package` command contain a use of :command:`cmake_policy`,
+that policy setting will not affect the caller by default.  Both commands accept
+an optional ``NO_POLICY_SCOPE`` keyword to control this behavior.
 
 The :variable:`CMAKE_MINIMUM_REQUIRED_VERSION` variable may also be used
 to determine whether to report an error on use of deprecated macros or

-----------------------------------------------------------------------

Summary of changes:
 Help/manual/cmake-policies.7.rst |   16 +++++++++++++++-
 1 files changed, 15 insertions(+), 1 deletions(-)


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