Question

Linking to CPP lib from C

Asked by: php-newbie

Hi,

I've got a C program and need to link to a CPP library. What are some of the things I need to consider?

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Asked On
2009-10-28 at 10:32:45ID24851905
Topics

C Programming Language

,

Microsoft Visual C++.Net

Participating Experts
5
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Answers

 

by: Let_Me_BePosted on 2009-10-28 at 10:39:03ID: 25686006

Well, if the library doesn't have a C binding, you will have to write your own.

 

by: pgnatyukPosted on 2009-10-28 at 10:48:29ID: 25686107

This library exports a class or a set of functions?
If it's only functions, they can be declared with extern "C", so you can call them from the C code. Or you will need to wrap this functions with this extern "C" like:
#ifndef cpluplus
extern "C"
{
#endif

//the functions' declarations are here

#ifndef cpluplus
}#endif

If the library exports a class or classes, you will design a wrapper with a static objects of these classes and make functions that will call the methods of these objects.

 

by: askbPosted on 2009-10-28 at 10:50:16ID: 25686128

You could link to -lstdc++ along with cpp code. something like this.

gcc -lstdc++ cplusplus.o -o myexe

 

by: evilrixPosted on 2009-10-28 at 11:41:44ID: 25686742

 

by: cupPosted on 2009-10-28 at 12:30:36ID: 25687239

On MS

to force C to compile as C++, use /TP
to force C++ to compile as C, use /TC

You'll find these flags on the compiler options.

20120131-EE-VQP-002

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