GNAT supports interfacing with the G++ compiler (or any C++ compiler generating code that is compatible with the G++ Application Binary Interface —see http://www.codesourcery.com/archives/cxx-abi).
Interfacing can be done at 3 levels: simple data, subprograms, and
classes. In the first two cases, GNAT offers a specific Convention
C_Plus_Plus
(or CPP
) that behaves exactly like Convention C
.
Usually, C++ mangles the names of subprograms, and currently, GNAT does
not provide any help to solve the demangling problem. This problem can be
addressed in two ways:
extern "C"
syntax.
Interfacing at the class level can be achieved by using the GNAT specific
pragmas such as CPP_Constructor
. See Interfacing to C++, for additional information.