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