[resolved] add external/custom app to asterisk

I downloaded app_backticks.c from pbxfreeware.com but I have no idea how to compile it and or add it to the available appications that asterisk uses?

Can anyone help this noob?
[resolved]

moved to the apps dir in the asterisk src.
recompiled asterisk.
moved the new apps to the /usr/lib/asterisk/modules dir and restarted asterisk.

in /usr/src/asterisk/apps (or where your “asterisk/apps” directory is), edit the Makefile, adding app_backticks.so onto the var APPS

put the .c file in this directory, and then recompile asterisk. watch for errors.

[resolved]
moved to the apps dir in the asterisk src.
recompiled asterisk.
moved the new apps to the /usr/lib/asterisk/modules dir and restarted asterisk.