一个比较通用的makefile

.PHONY : all clean

DEBUG := YES

CC := gcc
CXX := g++
LD := g++
AR := ar rc

HOME_PATH := $(realpath .)
SOURCE_PATH := ${HOME_PATH}/src
INC_PATH := -I${HOME_PATH}/src
DEP_PATH := ${HOME_PATH}/dep
SRCS := $(wildcard ${SOURCE_PATH}/*.c) $(wildcard ${SOURCE_PATH}/*.cpp)
LIB_PATH := -L${HOME_PATH}/lib

DEBUG_CFLAGS := -g -O0 -Wall -Wconversion -Wuninitialized -D_DEBUG -m64 -pg
RELEASE_CFLAGS := -O3 -m64
DEBUG_CXXFLAGS := ${DEBUG_CFLAGS}
RELEASE_CXXFLAGS := ${RELEASE_CFLAGS}
DEBUG_LDFLAGS := --static
RELEASE_LDFLAGS := --static

ifeq (YES, ${DEBUG})
CFLAGS := ${DEBUG_CFLAGS}
CXXFLAGS := ${DEBUG_CXXFLAGS}
LDFLAGS := ${DEBUG_LDFLAGS}
BIN_PATH := ${HOME_PATH}/bin/debug
OBJ_PATH := ${HOME_PATH}/obj/debug
else
CFLAGS := ${RELEASE_CFLAGS}
CXXFLAGS := ${RELEASE_CXXFLAGS}
LDFLAGS := ${RELEASE_LDFLAGS}
BIN_PATH := ${HOME_PATH}/bin/release
OBJ_PATH := ${HOME_PATH}/obj/release
endif

BIN := ${BIN_PATH}/miku
LIBS := -Wl,-dn -lev -Wl,-dn -lglog -Wl,-dn -lpthread

OBJS := $(patsubst %,${OBJ_PATH}/%.o,$(basename ${notdir ${SRCS}}))
DEPS := $(patsubst %,${DEP_PATH}/%.d,$(basename ${notdir ${SRCS}}))

all : ${BIN_PATH} ${OBJ_PATH} ${DEP_PATH} ${BIN}

${BIN}: ${OBJS}
${LD} -o $@ ${LDFLAGS} ${OBJS} ${LIB_PATH} ${LIBS}

${BIN_PATH}:
mkdir -p ${BIN_PATH}
${OBJ_PATH}:
mkdir -p ${OBJ_PATH}
${DEP_PATH}:
mkdir ${DEP_PATH}

${DEP_PATH}/%.d : ${SOURCE_PATH}/%.c
@set -e;\
rm -f $@;\
${CC} -MM ${CFLAGS} ${INC_PATH} $< > $@.tmp;\
sed 's,\($*\)\.o[ :]*,${OBJ_PATH}/\1.o $@ : ,g' < $@.tmp > $@;\
rm -f $@.tmp

${DEP_PATH}/%.d : ${SOURCE_PATH}/%.cpp
@set -e;\
rm -f $@;\
${CC} -MM ${CFLAGS} ${INC_PATH} $< > $@.tmp;\
sed 's,\($*\)\.o[ :]*,${OBJ_PATH}/\1.o $@ : ,g' < $@.tmp > $@;\
rm -f $@.tmp

-include ${DEPS}

${OBJ_PATH}/%.o : ${SOURCE_PATH}/%.c
${CC} -c ${CFLAGS} ${INC_PATH} $< -o ${OBJ_PATH}/${basename ${notdir $@}}.o

${OBJ_PATH}/%.o : ${SOURCE_PATH}/%.cpp
${CXX} -c ${CXXFLAGS} ${INC_PATH} $< -o ${OBJ_PATH}/${basename ${notdir $@}}.o

clean:
-rm -f ${HOME_PATH}/dep/*.d
-rm -f ${HOME_PATH}/obj/debug/*.o
-rm -f ${HOME_PATH}/obj/release/*.o
-rm -f ${HOME_PATH}/bin/debug/*
-rm -f ${HOME_PATH}/bin/release/*