[Freeswitch-dev] Linking C++ .so Into Custom Freeswitch Module

[Jon Lederman]

Hi,

I am writing a custom module called mod_aw for freeswitch that uses a dynamic library called aw.so containing a c++ class.  I edited the makefile for my module to:

BASE=../../../..
LOCAL_LIBADD+=./lib/aw.so
include $(BASE)/build/modmake.rules

I am able to build the module and also modified modules.conf to include the new module.

When I start freeswitch, I don't see a message that the module was loaded. 

When I type: reload mod_aw I receive the following error:

2012-09-28 04:49:52.738493 [CRIT] switch_loadable_module.c:1310 Error Loading module /usr/local/freeswitch/mod/mod_aw.so
**/usr/local/freeswitch/mod/mod_aw.so: undefined symbol: _ZN10CAWETalker9ConfigureEPKc**

-ERR unloading module [No such module!]
+OK Reloading XML
-ERR loading module [module load file routine returned an error]

I know the library works as I have tried it in another program outside of freeswitch.  I am not sure what I am doing wrong.  I am wondering whether I need to provide extern "C" linkage for the c++ library.  However, I only have the .h file and .so file for the library.  Or, do I need to add something to my Makefile.

Any help on how to configure this would be greatly appreciated.

Thank you in advance.

-Jon