summaryrefslogtreecommitdiffstats
path: root/Help/prop_tgt/C_EXTENSIONS.rst
blob: b2abb462fc77785be7c546fd3d96d61627a80ca9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
C_EXTENSIONS
------------

.. versionadded:: 3.1

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. 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.

This property is initialized by the value of
the :variable:`CMAKE_C_EXTENSIONS` variable if it is set when a target
is created.