Specify Dependency Targets

Specifying dependency targets

final_target: sub_target final_target.c
	Recipe_to_create_final_target

sub_target: sub_target.c
	Recipe_to_create_sub_target

say_hello:
	echo "Hello World"

• say_hello: == The Target
• prerequisites or dependencies follow the target
• echo "Hello World" == The Recipe
• The target, prerequisites, and recipes together make a rule.
• Suppress command text and only show output with @ like @echo "hello world"

say_hello:
	  @echo "Hello World"

generate:
	  @echo "Creating empty text files..."
	  touch file-{1..10}.txt

clean:
	  @echo "Cleaning up..."
	  rm *.txt

• This will only run the say_hello function because it's the default target ( the first thing )
• to hard code the default target, include this at beginning of file: .DEFAULT_GOAL := generate
  • To instead run all targets the target all is used to call all other targets

all: say_hello generate

say_hello:
	  @echo "Hello World"

generate:
	  @echo "Creating empty text files..."
	  touch file-{1..10}.txt

clean:
	  @echo "Cleaning up..."
	  rm *.txt