A Makefile allows you to create targets with commands, collectively called the recipe. hello is a target, and the command that it executes is called a recipe. The recipes must begin with a tab.
hello:
@echo "Hello, Make!"Running make runs the default target, which is hello since it’s the first target. To be specific, you can run make hello. The @ prevents Make from displaying the command itself so you only see the output.
make
Hello, Make!
make hello
Hello, Make!