ejabberd module compilation error

Question

I am new to ejabberd, trying to add new module for offline_message_posturl, on a Windows server. I couldn't find any blog post specifically for Windows other than the below. I am using ejabberd version 15.07.

I have been following this blog post: http://jasonrowe.com/2011/12/30/ejabberd-offline-messages/

Right now I am not able to create a .beam file from the module file. I get this error:

> c(mod_http_offline).     
mod_http_offline.erl:21: undefined macro 'INFO_MSG/2'     
mod_http_offline.erl:27: undefined macro 'INFO_MSG/2' 
mod_http_offline.erl:44: undefined macro 'INFO_MSG/2'   
mod_http_offline.erl:11: function start/2 undefined  
mod_http_offline.erl:11: function stop/1 undefined  
mod_http_offline.erl:38: function post_offline_message/3 undefined  
error

How can I fix this error?

Answer 1

The INFO_MSG macro used to be defined in the header file ejabberd.hrl, but it was moved to logger.hrl in ejabberd 13.06, which was released after that blog post was written. Include logger.hrl as well as ejabberd.hrl, and your file should compile:

-include("ejabberd.hrl").
-include("logger.hrl").