not initial const aplog_module_index

[Whut Jia]

Hi,all

when I compile myself module source file (in c++ language)with g++,it accures 
error below:

http_log.h:121:not initial const aplog_module_index.

But,it is all right when I compile a module in c language with apxs 
tool.Why??Please help me!

My apache version is httpd-2.3.8,

Thanks!