Linux Makefile多目录的编写

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手头一个项目，需要编写项目的makefile

多目录结构：

csource/

├── common
│   └── sqlite3
├── inc
│   ├── curl
│   ├── lua
│   └── Protection
├── lib
│   ├── arm
│   └── linux
├── obj
├── out
│   ├── arm
│   └── linux
├── src

源码目录src，输出目录out，include目录inc，输入链接库目录lib，常用静态函数和sqlite3目录common

makefile如下：

 1 PLAT= none 2 CC= 3 CXX= 4 CFLAGS= 5 LDFLAGS= 6 MKDIR_P=mkdir -p 7  8 PLATS= linux arm 9 10 root= libroot.so11 root_a= libroot.a12 13 INC_DIR= ./inc14 COM_DIR= ./common15 SQL_DIR= ./common/sqlite316 LUA_DIR= ./inc/lua17 PRO_DIR= ./inc/Protection18 INCLUDE= -I$(LUA_DIR) -I$(INC_DIR) -I$(COM_DIR) -I$(SQL_DIR) -I$(PRO_DIR)19 DIR_SRC= ./src20 21 SRC = $(wildcard ${DIR_SRC}/*.cpp)22 OBJ = $(patsubst %.cpp,${DIR_OBJ}/%.o,$(notdir ${SRC})) $(DIR_OBJ)/sqlite3.o23 24 SO_TARGET = ${DIR_BIN}/${root}25 LIB_TARGET= ${DIR_BIN}/${root_a}26 27 28 # Targets start here.29 default: $(PLAT)30 31 none:32     @echo "Please do 'make PLATFORM' where PLATFORM is one of these:"33     @echo "  $(PLATS)"34 35 ${SO_TARGET}:${OBJ}36     $(CXX) $(OBJ) -o $@ $(LDFLAGS)37     cp ${DIR_BIN}/${root} ./test/ -f38 39 ${LIB_TARGET}:${OBJ} 40     $(AR) $@ ${OBJ} 41     $(RANLIB) $@42 43 dir:44     $(MKDIR_P) $(DIR_OBJ) $(DIR_BIN);45 46 all:$(SO_TARGET) $(LIB_TARGET)47 48 ALL = dir all49 50 linux:51     $(MAKE) $(ALL) DIR_OBJ="./obj_linux/" DIR_BIN="./out/linux" \52     CC="gcc" CXX="g++" AR="ar rcu" RANLIB="ranlib" \53     CFLAGS="-Wno-write-strings -m32 -O2 -D_DEBUG -D_LINUX -fPIC" \54     LDFLAGS="-O2 -shared -m32 -ldl -pthread -lrt -L./lib/linux -llua -lProtection -lz -lcurl"55 56 arm:57     $(MAKE) $(ALL) DIR_OBJ="./obj_arm/" DIR_BIN="./out/arm" \58     CC="arm-linux-gnueabihf-gcc" CXX="arm-linux-gnueabihf-g++" \59     AR="arm-linux-gnueabihf-ar rcu" RANLIB="arm-linux-gnueabihf-ranlib" \60     CFLAGS="-Wno-write-strings -O2 -D_ARM -D__LINUX -fPIC" \61     LDFLAGS="-O2 -shared -ldl -pthread -lrt -L./lib/arm -llua -lProtection -lz -lcurl"62 63 64 # list targets that do not create files (but not all makes understand .PHONY)65 .PHONY: all $(PLATS) default clean none66 67 ${DIR_OBJ}/%.o:${DIR_SRC}/%.cpp 68     $(CXX) $(CFLAGS) $(INCLUDE) -c $< -o $@69 70 ${DIR_OBJ}/sqlite3.o:${DIR_SRC}/sqlite3.c 71     $(CC) $(CFLAGS) $(INCLUDE) -c $< -o $@72 73 .PHONY:clean74 clean: 75     -find ${DIR_OBJ} -name *.o -exec rm -rf {} \;

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