A simple Makefile example

Continuing our series on makefile tutorial, below is a simple makefile which compiles the Hello World program Main.cpp into an object file Main.o and generates the binary executable Main.exe

#-----------------------------------------------------------------------
#                   A Simple Makefile example
#-----------------------------------------------------------------------
PROJECT := Main

SRCEXT := .h .cpp
OBJEXT := .o
EXEEXT := .exe

#compilers
CC := gcc
CXX := g++


#flags
CFLAGS := -o
CXXFLAGS := -o
LDFLAGS := -o


#disable implicit suffix rules
.SUFFIXES:
.SUFFIXES: $(SRCEXT) $(OBJEXT) $(EXEEXT)

SRC := \
    Main.cpp

OBJ := \
    $(SRC:.cpp=.o)

EXE := \
    $(PROJECT)$(EXEEXT)

#define dummy targets
.PHONY: all clean compile link

all : compile link
    
clean :
    @echo
    @echo "Cleaning Temporary Files..."
    $(RM) $(OBJ) $(EXE)

compile : $(OBJ)

link : $(EXE)

$(OBJ) :
    @echo
    @echo "Compiling Source Files..."
    $(CXX) $(CXXFLAGS) $(OBJ) $(SRC)

$(EXE) :
    @echo
    @echo "Linking..."
    $(LD) $(OBJ) $(LDFLAGS) $(EXE)

run :
    @echo
    @$(EXE)

The Hello World program

#include <iostream>

int main()
{
    printf("Hello World");
    return 0;
}

Output