makefile tutorial

This repository includes a makefile, the makefile is adaptable to any C or CPP project as easily. The makefile generates an output for each source file, so when you change any source file, the GCC will recompile just which file that is changed and update the output.

Makefile magics:

step: dependencies_file dependencies_steps

macro	explanation
$@	step's definition name
$?	step's all dependencies
$<	step's just file dependencies

makefile

CC       =  gcc
CFLAGS   =  -g -Wall -I.
SRCDIR   =  src
OBJDIR   =  obj
BINDIR   =  bin

SOURCES  = $(shell find $(SRCDIR) -type f -name '*.c') # main.c say_hello.c
OBJECTS  = $(patsubst $(SRCDIR)/%,$(OBJDIR)/%,$(SOURCES:.c=.o)) # main.o say_hello.o
DEPS     = $(OBJECTS:.o=.d)
BINARY   = $(BINDIR)/Program.bin
#-include $(DEPS)

all: buildsolution

buildsolution: dir $(BINARY)

dir:
    mkdir -p $(OBJDIR)
    mkdir -p $(BINDIR)

$(BINARY): $(OBJECTS)
    $(CC) $(CFLAGS) $^ -o $@

$(OBJDIR)/%.o: $(SRCDIR)/%.c
    $(CC) $(CFLAGS) -c -MMD -MP -o $@ $<

clean:
    echo "clean runing..."