0x1C-makefiles

Project 0x1C. C - Makefiles

General

• What are make, Makefiles
• When, why and how to use Makefiles
• What are rules and how to set and use them
• What are explicit and implicit rules
• What are the most common / useful rules
• What are variables and how to set and use them

Requirements

• Allowed editors: vi, vim, emacs
• OS: Ubuntu 20.04 LTS
• Version of gcc: 9.3.0
• Version of make: GNU Make 4.2.1
• All your files should end with a new line
• A README.md file, at the root of the folder of the project, is mandatory

More Info

Files

In the following tasks, we are going to use these files. We want to compile these only.

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Tasks

0. make -f 0-Makefile

Create your first Makefile.

Requirements:

• name of the executable: holberton
• rules: all
  • The all rule builds your executable
• variables: none

1. make -f 1-Makefile

Requirements:

• name of the executable: holberton
• rules: all
  • The all rule builds your executable
• variables: CC, SRC
  • CC: the compiler to be used
  • SRC: the .c files

2. make -f 2-Makefile

Create your first useful Makefile.

Requirements:

• name of the executable: holberton
• rules: all
  • The all rule builds your executable
• variables: CC, SRC, OBJ, NAME
  • CC: the compiler to be used
  • SRC: the .c files
  • OBJ: the .o files
  • NAME: the name of the executable
• The all rule should recompile only the updated source files
• You are not allowed to have a list of all the .o files

3. make -f 3-Makefile

Requirements:

• name of the executable: holberton
• rules: all, clean, oclean, fclean, re
  • all: builds your executable
  • clean: deletes all Emacs and Vim temporary files along with the executable
  • oclean: deletes the object files
  • fclean: deletes the Emacs temporary files, the executable, and the object files
  • re: forces recompilation of all source files
• variables: CC, SRC, OBJ, NAME, RM
  • CC: the compiler to be used
  • SRC: the .c files
  • OBJ: the .o files
  • NAME: the name of the executable
  • RM: the program to delete files
• The all rule should recompile only the updated source files
• The clean, oclean, fclean, re rules should never fail
• You are not allowed to have a list of all the .o files

4. A complete Makefile

Requirements:

• name of the executable: holberton
• rules: all, clean, fclean, oclean, re
  • all: builds your executable
  • clean: deletes all Emacs and Vim temporary files along with the executable
  • oclean: deletes the object files
  • fclean: deletes the Emacs temporary files, the executable, and the object files
  • re: forces recompilation of all source files
• variables: CC, SRC, OBJ, NAME, RM, CFLAGS
  • CC: the compiler to be used
  • SRC: the .c files
  • OBJ: the .o files
  • NAME: the name of the executable
  • RM: the program to delete files
  • CFLAGS: your favorite compiler flags: -Wall -Werror -Wextra -pedantic
• The all rule should recompile only the updated source files

• The clean, oclean, fclean, re rules should never fail

• You are not allowed to have a list of all the .o files

5. Island Perimeter

Technical interview preparation:

• You are not allowed to google anything
• Whiteboard first

Create a function def island_perimeter(grid): that returns the perimeter of the island described in grid:

• grid is a list of list of integers:
  • 0 represents a water zone
  • 1 represents a land zone
  • One cell is a square with side length 1
  • Grid cells are connected horizontally/vertically (not diagonally).
  • Grid is rectangular, width and height don’t exceed 100
• Grid is completely surrounded by water, and there is one island (or nothing).
• The island doesn’t have “lakes” (water inside that isn’t connected to the water around the island).

Requirements:

• First line contains #!/usr/bin/python3
• You are not allowed to import any module
• Module and function must be documented