Linux Makefile多目錄的編寫

手頭乙個專案，需要編寫專案的makefile

多目錄結構：

csource/  

├── common

│   └── sqlite3

├── inc

│   ├── curl

│   ├── lua

│   └── protection

├── lib

│   ├── arm

│   └── linux

├── obj

├── out

│   ├── arm

│   └── linux

├── src

原始碼目錄src，輸出目錄out，include目錄inc，輸入鏈結庫目錄lib，常用靜態函式和sqlite3目錄common

makefile如下：

1 plat= none

2 cc=
3 cxx=
4 cflags=
5 ldflags=
6 mkdir_p=mkdir -p
78 plats= linux arm
910 root= libroot.so
11 root_a= libroot.a
1213 inc_dir= ./inc
14 com_dir= ./common
15 sql_dir= ./common/sqlite3
16 lua_dir= ./inc/lua
17 pro_dir= ./inc/protection
18 include= -i$(lua_dir) -i$(inc_dir) -i$(com_dir) -i$(sql_dir) -i$(pro_dir)
19 dir_src= ./src
2021 src = $(wildcard $/*
.cpp)
22obj = $(patsubst %.cpp,$/%.o,$(notdir $)) $(dir_obj)/sqlite3.o
2324
so_target = $/$
25lib_target= $/$
2627
28# targets start here.
29default: $(plat)
3031
none:
32@echo "please do 'make platform' where platform is one of these:"
33@echo "  $(plats)"
3435
$:$36
$(cxx) $(obj) -o $@ $(ldflags)
37cp $/$ ./test/ -f
3839
$:$ 
40$(ar) $@ $ 
41$(ranlib) $@
4243
dir:
44$(mkdir_p) $(dir_obj) $(dir_bin);
4546
all:$(so_target) $(lib_target)
4748
all = dir all
4950
linux:
51$(make) $(all) dir_obj="./obj_linux/" dir_bin="./out/linux" \
52cc="gcc" cxx="g++" ar="ar rcu" ranlib="ranlib" \
53cflags="-wno-write-strings -m32 -o2 -d_debug -d_linux -fpic" \
54ldflags="-o2 -shared -m32 -ldl -pthread -lrt -l./lib/linux -llua -lprotection -lz -lcurl"
5556
arm:
57$(make) $(all) dir_obj="./obj_arm/" dir_bin="./out/arm" \
58cc="arm-linux-gnueabihf-gcc" cxx="arm-linux-gnueabihf-g++" \
59ar="arm-linux-gnueabihf-ar rcu" ranlib="arm-linux-gnueabihf-ranlib" \
60cflags="-wno-write-strings -o2 -d_arm -d__linux -fpic" \
61ldflags="-o2 -shared -ldl -pthread -lrt -l./lib/arm -llua -lprotection -lz -lcurl"
6263
64# list targets that do not create files (but not all makes understand .phony)
65.phony: all $(plats) default clean none
6667
$/%.o:$/%.cpp 
68$(cxx) $(cflags) $(include) -c $< -o $@
6970
$/sqlite3.o:$/sqlite3.c 
71$(cc) $(cflags) $(include) -c $< -o $@
7273
.phony:clean
74clean: 
75-find $ -name *.o -exec rm -rf {} \;

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