2016-09-03 03:54:16 +08:00
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.. _cxx_support_v2:
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C++ Support for Applications
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############################
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The kernel supports applications written in both C and C++. However, to
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use C++ in an application you must configure the kernel to include C++
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support and the build system must select the correct compiler.
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The build system selects the C++ compiler based on the suffix of the files.
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Files identified with either a **cxx** or a **cpp** suffix are compiled using
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the C++ compiler. For example, :file:`myCplusplusApp.cpp` is compiled using C++.
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The kernel currently provides only a subset of C++ functionality. The
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following features are *not* supported:
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* Dynamic object management with the **new** and **delete** operators
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2017-09-21 01:50:09 +08:00
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* :abbr:`RTTI (runtime type information)`
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2016-09-03 03:54:16 +08:00
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* Exceptions
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* Static global object destruction
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While not an exhaustive list, support for the following functionality is
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included:
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* Inheritance
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* Virtual functions
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* Virtual tables
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* Static global object constructors
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Static global object constructors are initialized after the drivers are
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initialized but before the application :c:func:`main()` function. Therefore,
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use of C++ is restricted to application code.
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.. note::
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Do not use C++ for kernel, driver, or system initialization code.
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