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Compilers enable their extensions by default, and disabling them implicitly can lead to results which are surprising or non-obvious to debug. http://public.kitware.com/pipermail/cmake-developers/2014-May/010575.html http://thread.gmane.org/gmane.comp.programming.tools.cmake.devel/10214 https://www.mail-archive.com/cmake-developers@cmake.org/msg10116.html (Compiler feature extensions by default, 29 May 2014)
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560 B
ReStructuredText
17 lines
560 B
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CXX_EXTENSIONS
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--------------
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Boolean specifying whether compiler specific extensions are requested.
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This property specifies whether compiler specific extensions should be
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used. For some compilers, this results in adding a flag such
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as ``-std=gnu++11`` instead of ``-std=c++11`` to the compile line. This
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property is ``ON`` by default.
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See the :manual:`cmake-compile-features(7)` manual for information on
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compile features.
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This property is initialized by the value of
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the :variable:`CMAKE_CXX_EXTENSIONS` variable if it is set when a target
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is created.
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