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<H1><A NAME="SECTION0031100000000000000000"></A><A NAME="cplusplus"></A>
<BR>
1.11 Writing Extensions in C++
         
</H1>

<P>
It is possible to write extension modules in C++.  Some restrictions
apply.  If the main program (the Python interpreter) is compiled and
linked by the C compiler, global or static objects with constructors
cannot be used.  This is not a problem if the main program is linked
by the C++ compiler.  Functions that will be called by the
Python interpreter (in particular, module initialization functions)
have to be declared using <code>extern "C"</code>.
It is unnecessary to enclose the Python header files in
<code>extern "C" {...}</code> -- they use this form already if the symbol
"<tt class="samp">__cplusplus</tt>" is defined (all recent C++ compilers define this
symbol).

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	53
	54	<H1><A NAME="SECTION0031100000000000000000"></A><A NAME="cplusplus"></A>
	55	<BR>
	56	1.11 Writing Extensions in C++
	57
	58	</H1>
	59
	60	<P>
	61	It is possible to write extension modules in C++. Some restrictions
	62	apply. If the main program (the Python interpreter) is compiled and
	63	linked by the C compiler, global or static objects with constructors
	64	cannot be used. This is not a problem if the main program is linked
65	by the C++ compiler. Functions that will be called by the
66	Python interpreter (in particular, module initialization functions)
67	have to be declared using <code>extern "C"</code>.
68	It is unnecessary to enclose the Python header files in
69	<code>extern "C" {...}</code> -- they use this form already if the symbol
70	"<tt class="samp">__cplusplus</tt>" is defined (all recent C++ compilers define this
71	symbol).
72
73	<P>
74
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76	<div class='online-navigation'>
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78	<table align="center" width="100%" cellpadding="0" cellspacing="2">
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81	href="nullPointers.html"><img src='../icons/previous.png'
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87	href="using-cobjects.html"><img src='../icons/next.png'
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