Slog70_ Make and Makefile2 of the automation tool

• ArthurSlog

• SLog-70

• 1 Year,

• Through China,

• Sep 11th 2018

• ArthurSlog Page

• GitHub

• NPM Package Page

• The nuggets home page

• Jane books home page

• segmentfault

The sage thinks that the more he has, the more he has

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Development Environment MacOS(High Sierra 10.13.5)

Required information and information sources:

• Tip: The Tab key is used in makefiles as a marker to split between two blocks

• Complete code -Github portal

• Make tools

• Integrated development environment

• Make tool instruction file Makefile

Start coding

• The previous article wrote a basic Makefile

~/Desktop/makefile_demo/Makefile

.PHONY: all say_hello generate clean

all: say_hello generate

say_hello:
        @echo "Hello Malefile"

generate:
        @echo "Creating some files..."touch file-{1.. 10}.txtclean:
        @echo "Cleaning up..."
        rm *.txt
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• ~/Desktop/makefile_demo/

cd ~/Desktop/makefile_demo/

make clean

mkdir demo1 demo2

mv Makefile demo1/

cd demo2

• Create a new file Makefile in the current path (~/Desktop/makefile_demo/demo2/)

• The current directory structure is as follows:

makefile_demo
      | - demo1
            | - Makefile
      | - demo2
            | - Makefile
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• This time, take a look at the “judgment” syntax in makefiles

• For example, here’s the code:

~/Desktop/makefile_demo/demo2/Makefile

.PHONY: all warning generate clean

all: warning generate

# fun: warning
# if(./README.md)
# do
# @echo "Readme. md is an existing file, you just covered it"
warning : README.md
	@echo "Readme. md is an existing file, you just covered it"

generate: 
	@echo "Creating a file named README.md ..."
	touch README.md

clean: 
	@echo "Cleaning up..."
	rm *.md
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• In the code above;

# fun: warning
# if(./README.md)
# do
# @echo "Readme. md is an existing file, you just covered it"
warning : README.md
	@echo "Readme. md is an existing file, you just covered it"
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• It’s broken down into three parts:

/ / the method name

1. warning

// Check whether there is a readme. md file in the current path

// The method body, which is the specific execution method, is printed on the console “readme. md is an existing file, 3. @echo “README. Md is an existing file, you just covered it”

• Now, open the command line and execute the generate method in the Makefile in the current path

make generate

Creating a file named README.md ...
touch README.md
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• A readme.md file is now generated in the current path

ls

Makefile	README.md
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• Now, execute the all method in the Makefile. Make executes all by default, so all can be omitted

make

Creating a file named README.md ...
touch README.md
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• The all method contains two methods: Warning and generate

• Warning executes “Judge module” before executing the method body

• “Judgment module always takes precedence”

• Now execute the clean method to clean up the current path

make clean

Cleaning up...
rm *.md
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• Viewing the Current Path

ls

Makefile
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• All this is to describe the use of “rules” for makefiles

• It’s officially called rules.

a rules

The target... : prerequisites... The recipe... ...Copy the code

• This completes the understanding and writing of the “rules” of a basic Makefile.

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