6 The C++ standard whose features are requested to build this target.
8 This property specifies the C++ 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. For compilers that
11 have no notion of a standard level, such as Microsoft Visual C++ before
12 2015 Update 3, this has no effect.
31 .. versionadded:: 3.12
36 .. versionadded:: 3.20
40 If the value requested does not result in a compile flag being added for
41 the compiler in use, a previous standard flag will be added instead. This
46 set_property(TARGET tgt PROPERTY CXX_STANDARD 11)
48 with a compiler which does not support ``-std=gnu++11`` or an equivalent
49 flag will not result in an error or warning, but will instead add the
50 ``-std=gnu++98`` flag if supported. This "decay" behavior may be controlled
51 with the :prop_tgt:`CXX_STANDARD_REQUIRED` target property.
52 Additionally, the :prop_tgt:`CXX_EXTENSIONS` target property may be used to
53 control whether compiler-specific extensions are enabled on a per-target basis.
55 See the :manual:`cmake-compile-features(7)` manual for information on
56 compile features and a list of supported compilers.
58 This property is initialized by the value of
59 the :variable:`CMAKE_CXX_STANDARD` variable if it is set when a target