Intro to Make

An introduction to Makefiles given at BarCamp GR.

Transcript

1. Intro to Make
   @JaceBrowning
   

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2. What is Make?
   ● Build automation tool
   ○ Builds executable programs from source code
   ○ Update files automatically when related files change
   ● Initial release: 1977
   ● Filename: Makefile
   ○ Targets
   ○ Components
   ○ Commands
   

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3. barcamp: barcamp.c
   gcc -o barcamp barcamp.c
   $ make barcamp
   

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5. Motivation
   

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6. Arguments against Grunt, Gulp, etc.
   ● Bootstrapping problem
   ● Limited dependency tracking
   ● Project switching overhead
   ○ How do I install the dependencies?
   ○ How do I run the tests?
   

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7. Arguments for Make
   ● Ubiquitous
   ● Stable
   ● Self-contained
   ● Established conventions
   ○ make
   ○ make test
   ○ make clean
   

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8. Advantages of Standardizing
   ● Reduced project switching overhead
   ● Shared Continuous Integration configuration
   ● Easier build debugging
   

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9. before_script:
   - git submodule update --init --recursive
   - ./set_token.sh
   - bundle install
   script:
   - bundle exec rake
   secure_pipeline:network_attack
   - bundle exec rake secure_pipeline:ssl_attack
   - bundle exec rake secure_pipeline:xss
   - bundle exec rake
   secure_pipeline:information_leakage
   - bundle exec rake
   secure_pipeline:sql_injection
   before_script:
   - make
   script:
   - make ci
   

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10. Features
    

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11. Files and Timestamps
    ● Create missing files
    ● Traverse dependency chains
    ● Update files when dependencies are newer
    

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12. Variables
    ● CONSTANT := value
    ● LAZY = $(shell ls *.py)
    ● OPTIONAL ?= value2
    ○ make OPTIONAL=value3
    

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13. Automatic Variables
    ● $@
    ● $<
    ● $^
    https://www.gnu.org/software/make/manual/html_node/Automatic-Variables.html
    

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14. Demo
    

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15. Thanks!
    @JaceBrowning
    

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