Practical Examples of Makefile

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We previously described the concepts of Makefile; now we provide an example to see how to use it, and thus conclude the topic of Makefile.

$ tree  .  ├── inc  │   ├── add.h  │   └── sub.h  ├── Makefile  └── src      ├── add.c      ├── main.c      └── sub.c

VERSION = 1.0.0SOURCE = $(wildcard ./src/*.c)OBJECT = $(patsubst %.c, %.o, $(SOURCE))
INCLUEDS = -I ./inc
TARGET  = riceCC      = gccCFLAGS  = -Wall -g
$(TARGET): $(OBJECT)  @mkdir -p output/  $(CC) $^ $(CFLAGES) -o output/$(TARGET)_$(VERSION)
%.o: %.c  $(CC) $(INCLUEDS) $(CFLAGES) -c $< -o $@
.PHONY:clean
clean:  @rm -rf $(OBJECT) output/

Line 1: Assign the version number to the variable VERSION

Line 2: Get all .c files in the current directory src and assign them to the variable SOURCE.

Line 3: Replace the .c files in the ./src directory with .o files and assign them to OBJECT.

Line 4: Specify the header file directory using the -I option and assign it to the variable INCLUDES.

Line 7: The name of the final target file is rice, assigned to TARGET.

Line 8: Replace the default CC from cc to gcc.

Line 9: Assign the option to display all warning messages and gdb debugging options to the variable CFLAGS.

Line 12: Create the directory output and suppress the output of this command in the terminal.

Line 13: The executable program 100ask will be generated in the output directory, with the version number as a suffix.

Line 16: Generate the corresponding object files from the source files.

Line 18: A phony target to avoid naming conflicts with a file named clean in the current directory.

Line 20: The command executed when running make clean is to delete the files generated during the compilation process.

$ make  gcc -I ./inc  -c src/main.c -o src/main.o  gcc -I ./inc  -c src/add.c -o src/add.o  gcc -I ./inc  -c src/sub.c -o src/sub.o  gcc src/main.o src/add.o src/sub.o  -o output/rice$tree  .  ├── inc  │   ├── add.h  │   └── sub.h  ├── Makefile  ├── output  │   └── rice_1.0.0  └── src      ├── add.c      ├── add.o      ├── main.c      ├── main.o      ├── sub.c      └── sub.o