6 The ObjC++ standard whose features are requested to build this target.
8 This property specifies the ObjC++ standard whose features are requested
9 to build this target. For some compilers, this results in adding a
10 flag such as ``-std=gnu++11`` to the compile line.
30 .. versionadded:: 3.20
34 If the value requested does not result in a compile flag being added for
35 the compiler in use, a previous standard flag will be added instead. This
40 set_property(TARGET tgt PROPERTY OBJCXX_STANDARD 11)
42 with a compiler which does not support ``-std=gnu++11`` or an equivalent
43 flag will not result in an error or warning, but will instead add the
44 ``-std=gnu++98`` flag if supported. This "decay" behavior may be controlled
45 with the :prop_tgt:`OBJCXX_STANDARD_REQUIRED` target property.
46 Additionally, the :prop_tgt:`OBJCXX_EXTENSIONS` target property may be used to
47 control whether compiler-specific extensions are enabled on a per-target basis.
49 If the property is not set, and the project has set the :prop_tgt:`CXX_STANDARD`,
50 the value of :prop_tgt:`CXX_STANDARD` is set for :prop_tgt:`OBJCXX_STANDARD`.
52 See the :manual:`cmake-compile-features(7)` manual for information on
53 compile features and a list of supported compilers.
55 This property is initialized by the value of
56 the :variable:`CMAKE_OBJCXX_STANDARD` variable if it is set when a target