I found out about a problem with apache2 and mod_lua today. When trying to enable mod_lua in apache

a2enmod lua

and restarting apache service

service apache2 restart

it returned a error

apache2: Syntax error on line 140 of /etc/apache2/apache2.conf: Syntax error on line 1 of /etc/apache2/mods-enabled/lua.load: Cannot load /usr/lib/apache2/modules/mod_lua.so into server: /usr/lib/apache2/modules/mod_lua.so: cannot open shared object file: No such file or directory

Basically apache can’t find mod_lua in modules folder. Thanks to a kind help from Humbedooh I was able to successfully compile mod_lua myself. Here are the steps needed to make mod_lua work.

1. Clone svn repository of lua module

    svn co https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x/modules/lua/
   

2. Find lua.h on your installation

    find / -name lua.h
   

   For me it was in /usr/include/lua5.2/

3. cd into the cloned repo

    cd lua
   

4. and run this command to compile mod_lua yourself (remember to put your lua.h location there)

    apxs -I/usr/include/lua5.2 -cia mod_lua.c lua_*.c -lm -llua5.2
   

5. and if everything went well the last thing is to restart apache

    service apache2 restart
   

   and lua should be enabled

Refer to modlua.org for more info about using mod_lua.