Commit c6a077d6 authored by Gregor Jasny's avatar Gregor Jasny Committed by Brad King
Browse files

Help: Cross reference CXX_STANDARD and CXX_EXTENSIONS (#16162)

parent d152ae12
......@@ -6,7 +6,8 @@ Boolean specifying whether compiler specific extensions are requested.
This property specifies whether compiler specific extensions should be
used. For some compilers, this results in adding a flag such
as ``-std=gnu++11`` instead of ``-std=c++11`` to the compile line. This
property is ``ON`` by default.
property is ``ON`` by default. The basic C++ standard level is
controlled by the :prop_tgt:`CXX_STANDARD` target property.
See the :manual:`cmake-compile-features(7)` manual for information on
compile features and a list of supported compilers.
......
......@@ -22,6 +22,8 @@ with a compiler which does not support ``-std=gnu++11`` or an equivalent
flag will not result in an error or warning, but will instead add the
``-std=gnu++98`` flag if supported. This "decay" behavior may be controlled
with the :prop_tgt:`CXX_STANDARD_REQUIRED` target property.
Additionally, the :prop_tgt:`CXX_EXTENSIONS` target property may be used to
control whether compiler-specific extensions are enabled on a per-target basis.
See the :manual:`cmake-compile-features(7)` manual for information on
compile features and a list of supported compilers.
......
......@@ -6,7 +6,8 @@ Boolean specifying whether compiler specific extensions are requested.
This property specifies whether compiler specific extensions should be
used. For some compilers, this results in adding a flag such
as ``-std=gnu11`` instead of ``-std=c11`` to the compile line. This
property is ``ON`` by default.
property is ``ON`` by default. The basic C standard level is
controlled by the :prop_tgt:`C_STANDARD` target property.
See the :manual:`cmake-compile-features(7)` manual for information on
compile features and a list of supported compilers.
......
......@@ -22,6 +22,8 @@ with a compiler which does not support ``-std=gnu11`` or an equivalent
flag will not result in an error or warning, but will instead add the
``-std=gnu99`` or ``-std=gnu90`` flag if supported. This "decay" behavior may
be controlled with the :prop_tgt:`C_STANDARD_REQUIRED` target property.
Additionally, the :prop_tgt:`C_EXTENSIONS` target property may be used to
control whether compiler-specific extensions are enabled on a per-target basis.
See the :manual:`cmake-compile-features(7)` manual for information on
compile features and a list of supported compilers.
......
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