1.11 Writing Extensions in C++
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 initalization functions) have to be declared using extern "C".
It is unnecessary to enclose the Python header files in extern "C" {...}
-- they use this form already if the symbol "__cplusplus" is
defined (all recent C++ compilers define this symbol).
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