makefiles

C - Makefiles ♏

Description 😶‍🌫️

This project is about writing Makefiles.

Helper Files 🙌

• school.c: C function that displays a seahorse in text. Used for Makefile practice purposes throughout project.

• main.c: Main C function that runs the function defined in school.c.

Header File 📁

• m.h: Header file defining the function prototype used in school.c.

Formatting and Examples 🤓

Usage ✅

julien@ubuntu:~//Makefiles$ ls -1
0-Makefile
1-Makefile
2-Makefile
3-Makefile
school.c
main.c
main.c~
m.h
julien@ubuntu:~/Makefiles$ make -f 3-Makefile
gcc    -c -o main.o main.c
gcc    -c -o school.o school.c
gcc main.o school.o -o school
julien@ubuntu:~/Makefiles$ make all -f 3-Makefile
gcc main.o school.o -o school
julien@ubuntu:~/Makefiles$ ls -1
0-Makefile
1-Makefile
2-Makefile
3-Makefile
school
school.c
school.o
main.c
main.c~
main.o
m.h
julien@ubuntu:~/Makefiles$ make clean -f 3-Makefile 
rm -f *~ school
julien@ubuntu:~/Makefiles$ make oclean -f 3-Makefile 
rm -f main.o school.o
julien@ubuntu:~/Makefiles$ make fclean -f 3-Makefile 
rm -f *~ school
rm -f main.o school.o
julien@ubuntu:~/Makefiles$ make all -f 3-Makefile
gcc    -c -o main.o main.c
gcc    -c -o school.o school.c
gcc main.o school.o -o school
julien@ubuntu:~/Makefiles$ make all -f 3-Makefile
gcc main.o school.o -o school
julien@ubuntu:~/Makefiles$ make re -f 3-Makefile
rm -f main.o school.o
gcc    -c -o main.o main.c
gcc    -c -o school.o school.c
gcc main.o school.o -o school
julien@ubuntu:~/Makefiles$ 

Tasks 📃

• 0. make -f 0-Makefile

  • 0-Makefile: Makefile that creates an executable school based on school.c and main.c. Includes:
    • Rule all that builds the executable.

• 1. make -f 1-Makefile

  • 1-Makefile: Makefile that creates an executable school based on school.c and main.c. Builds on 0-Makefile with:
    • Variable CC that defines the compiler to be used.
    • Variable SRC that defines the .c files to compile.
    • The all rule only recompiles updated source files.

• 2. make -f 2-Makefile

  • 2-Makefile: Makefile that creates an executable school based on school.c and main.c. Builds on 1-Makefile with:
    • Variable OBJ that defines the .o files to compile.
    • Variable NAME that defines the name of the executable.

• 3. make -f 3-Makefile

  • 3-Makefile: Makefile that creates an executable school based on school.c and main.c. Builds on 2-Makefile with:
    • Rule clean that deletes all Emacs/Vim temporary files as well as the executable.
    • Rule oclean that deletes the object files.
    • Rule fclean that deltes all of the temporary files, executable, and object files.
    • Rule re that forces recompilation of all source files.
    • Variable RM that defines the command to delete files.

• 4. A complete Makefile

  • 4-Makefile: Makefile that creates an executable school based on school.c and main.c. Builds on 3-Makefile with:
    • Variable CFLAGS that defines the compiler flags -Wall -Werror -Wextra -pedantic.