I use a tool called YUMI to create a USB boot device.
Its Debian package and its source can be downloaded from http://www.pendrivelinux.com/yumi-multiboot-usb-creator/.
I needed to change a file in source code to make the program fits my needs but now I don't how to compile it and install it afterwards.
I tried with
dpkg but with no experience and it didn't work.
So, is there an easy way to compile and install a user-modified source code?