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

[Jon Lederman]

Hi,

Thanks for your reply.  The problem is that I'm not sure I'm linking the external libs correctly.  My module makefile is:

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

Shouldn't LOCAL_LIBADD be enough.  Or do I need additional statements in my makefile.  The aw.so defines the symbol in question yet I still receive the missing symbol message when I try to load the module.

Any help would be greatly appreciated.

Thanks in advance.

Jon


On Sep 28, 2012, at 11:27 AM, Anthony Minessale <anthony.minessale at gmail.com> wrote:

> to auto-load you also need modules.conf.xml modules.conf is only for building.
> 
> The module can't load because it's missing the symbol:
> 
> ZN10CAWETalker9ConfigureEPKc
> 
> So you need to link in any external libs you might be using into your .so
> 
> 
> On Fri, Sep 28, 2012 at 12:05 AM, Jon Lederman <jon2718 at gmail.com> wrote:
>> 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
>> _________________________________________________________________________
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> 
> 
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> Anthony Minessale II
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