Make file is used for compiling no of files by using single command MAKE.
It will be very useful in big projects, if we changed one file the time sence will be different for that particular file for that we have to compile all the files, by using this we can able to compile all by using single command.
The make utility:
If we run make command.
this program will look for a file named makefile in your directory, and then execute it.
If you have several makefiles, then you can execute them with the command:
make -f MyMakefile
There are several other switches to the make utility. For more info, man make. Build Process