Merge topic 'target_compile_features'

9eaf3755 Export: Populate INTERFACE_COMPILE_FEATURES property.
8ed59fc2 Add target_compile_features command.
4e6ca504 cmTargetPropCommandBase: Change the interface to return bool.
5412dede cmTarget: Transitively evaluate compiler features.
baff4434 cmTarget: Allow populating COMPILE_FEATURES using generator expressions.
f97bf437 Features: Add cxx_auto_type.
03355d6b cmTarget: Add COMPILE_FEATURES target property.
faeddf64 project: Add infrastructure for recording CXX compiler features
913394af cmTarget: Add CXX_STANDARD and CXX_EXTENSION target properties.
8238a6cd Add some COMPILE_OPTIONS for specifying C++ dialect.
892243fc Tests: Require CMake 3.0 for the SystemInformation test.
59b5fdd3 Don't load Clang-CXX from AppleClang-CXX.

1 files changed, 18 insertions, 0 deletions

diff --git a/Help/release/dev/compile-language-features.rst b/Help/release/dev/compile-language-features.rst
new file mode 100644
index 0000000000..3c5d7cadc4
--- /dev/null
+++ b/Help/release/dev/compile-language-features.rst
@@ -0,0 +1,18 @@
+target-language-features
+------------------------
+
+* New :prop_tgt:`CXX_STANDARD` and :prop_tgt:`CXX_EXTENSIONS` target
+  properties may specify values which CMake uses to compute required
+  compile options such as ``-std=c++11`` or ``-std=gnu++11``. The
+  :variable:`CMAKE_CXX_STANDARD` and :variable:`CMAKE_CXX_EXTENSIONS`
+  variables may be set to initialize the target properties.
+
+* New :prop_tgt:`COMPILE_FEATURES` target property may contain a list
+  of features required to compile a target.  CMake uses this
+  information to ensure that the compiler in use is capable of building
+  the target, and to add any necessary compile flags to support language
+  features.
+
+* New :command:`target_compile_features` command allows populating the
+  :prop_tgt:`COMPILE_FEATURES` target property, just like any other
+  build variable.