[ubuntu] Problem with Xtrlock compiling with new hide command

Greeting to all people it's a pleasure to be here !!
i'm Antonio
i would like to ask you all a question ...

I found a patch http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=571985
which adds two command-line options to xtrlock:

--forever: completely disables unlocking

--hide-cursor: makes the mouse cursor invisible


How do I use this patch?

P.S. I don't know much about compiling.

i also found this one called "better xtrlock" but i can't compile it ...
can someone give some explanation about it ??
i've tried with
gcc -o filename file.c
but it returns me some error before it can creates and executable file
https://github.com/jaseg/Better-XTrLock

Thanks to all in advance and have a nice day !