[openib-general] Re: Compiling an application that calls ib_cm_* functions

[Steve Wooding]

OK. It's that extern "C" issue again.

Maybe someone could put the "ifdef __cplusplus" code block at the top of 
the cm.h file so future C++ programers don't have to put extern "C" {} 
around the #include.

Cheers,

Steve.


Steve wrote:

> Hi,
>  
> I wonder if someone could help me with compiling my IB application?
> The problem is when I go to link my program I get all of the ib_cm* 
> function calls
> come up as "undefined reference". Also dlist_start and 
> _dlist_mark_move (dlist_next in the code).
>  
> Here is my linking command:
> icpc -o ib_comms_test1 ib_comms_test1.o ib_queue_pair.o 
> ib_comms_manager.o -L/usr/local/lib -libcm -libat -libverbs -libumad 
> -lsysfs -ldl
>  
> Get the same result when using g++
> The cmpost.c example compiles fine. I've tried to see what it is 
> doing. It seems to link-in the libibcm.la file,
> but when I try this with icpc or g++, they say they cannot recogised 
> the file type.
>  
> Maybe someone can spot the simple mistake I'm making.
>  
> Cheers,
>  
> Steve.