Re: Linking a C++ library to a C program.
- From: "Default User" <defaultuserbr@xxxxxxxxx>
- Date: 11 Jul 2005 16:03:48 -0700
CBFalconer wrote:
> Malcolm wrote:
> > "a2x" <add_aaron_2_x@xxxxxxxxxxx> wrote
> >>
> >> I am writing a C program which interfaces with a C++ library. The
> >> C++ library works fine with C. I was wondering if I need to use a
> >> C++ compiler (g++ in my case) to compile the C program or can I
> >> use a C compiler (gcc).
> >
> > If you want to call a function written in C++ from a C file your
> > best bet is to write the C code in the common subset of the two
> > languages and run it through a C++ compiler. The alternative is to
> > mess about with C++ name mangling and linkage conventions.
>
> For which alternative, AFAICT, there exists nothing even remotely
> resembling a standard, so that everything is totally non-portable.
Correct, but there is a C++ standard way to specify C-style linkage
(extern "C"). That prevents you from calling overloaded functions from
the C module, of course.
Whether a C object file can actually be linked with a C++ object file
or library is still implementation dependent. In practice it works
pretty well.
All of this should be discussed on comp.lang.c++, not here.
Brian
.
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