【Makefile语法 05】动静态库编译链接

目录

一、多文件项目源代码

二、静态库编译链接

三、动态库编译链接

---

一、多文件项目源代码

// include/add.hpp#pragma once
int add(int a, int b);

// include/sub.hpp#pragma once
int sub(int a, int b);

// src/add.cpp#include "add.hpp"int add(int a, int b) {return a + b;
}

// src/sub.cpp#include "sub.hpp"int sub(int a, int b) {return a - b;
}

// src/main.cpp#include <iostream>
#include "add.hpp"
#include "sub.hpp"int main() {std::cout << "10 + 5 = " << add(10, 5) << std::endl;std::cout << "10 - 5 = " << sub(10, 5) << std::endl;return 0;
}

二、静态库编译链接

# Makefile文件lib_srcs := $(filter-out src/main.cpp,$(shell find src -name *.cpp))
lib_objs := $(patsubst src/%.cpp,obj/%.o, $(lib_srcs))include_paths := $(shell pwd)/include/library_paths := $(shell pwd)/lib/
library_names := mymathI_options := $(include_paths:%=-I%)
l_options := $(library_names:%=-l%)
L_options := $(library_paths:%=-L%)compile_flags := $(I_options) -w -O3 -std=c++11
linking_flags := $(l_options) $(L_options)# ================ 编译静态库 ===============obj/%.o : src/%.cppg++ -c $^ -o $@ $(compile_flags)lib/libmymath.a : $(lib_objs)@mkdir -p $(dir $@)ar -r $@ $^static_lib : lib/libmymath.a# ================ 链接静态库 ===============obj/main.o : src/main.cpp@mkdir -p $(dir $@)g++ -c $^ -o $@ $(compile_flags)workspace/math.exe : obj/main.o@mkdir -p $(dir $@)g++ $^ -o $@ $(linking_flags)# ================ 运行与测试 ===============run : workspace/math.exe@./$<test :@echo "lib_srcs: " $(lib_srcs)@echo "lib_objs: " $(lib_objs)@echo "include_paths: " $(include_paths)@echo "compile_opts: " $(compile_opts)clean:rm -rf obj/* workspace .PHONY: test clean run

# 静态库编译链接过程(base) [root@localhost 08_test]# tree .
.
├── include
│   ├── add.hpp
│   └── sub.hpp
├── makefile
├── obj
└── src├── add.cpp├── main.cpp└── sub.cpp3 directories, 6 files
(base) [root@localhost 08_test]# make static_lib
g++ -c src/add.cpp -o obj/add.o -I/root/gitee/Test/Make_Learn/08_test/include/ -w -O3 -std=c++11
g++ -c src/sub.cpp -o obj/sub.o -I/root/gitee/Test/Make_Learn/08_test/include/ -w -O3 -std=c++11
ar -r lib/libmymath.a obj/add.o obj/sub.o
ar: 正在创建 lib/libmymath.a
(base) [root@localhost 08_test]# tree .
.
├── include
│   ├── add.hpp
│   └── sub.hpp
├── lib
│   └── libmymath.a
├── makefile
├── obj
│   ├── add.o
│   └── sub.o
└── src├── add.cpp├── main.cpp└── sub.cpp4 directories, 9 files
(base) [root@localhost 08_test]# make run
g++ -c src/main.cpp -o obj/main.o -I/root/gitee/Test/Make_Learn/08_test/include/ -w -O3 -std=c++11
g++ obj/main.o -o workspace/math.exe -lmymath -L/root/gitee/Test/Make_Learn/08_test/lib/
10 + 5 = 15
10 - 5 = 5
(base) [root@localhost 08_test]# tree .
.
├── include
│   ├── add.hpp
│   └── sub.hpp
├── lib
│   └── libmymath.a
├── makefile
├── obj
│   ├── add.o
│   ├── main.o
│   └── sub.o
├── src
│   ├── add.cpp
│   ├── main.cpp
│   └── sub.cpp
└── workspace└── math.exe5 directories, 11 files
(base) [root@localhost 08_test]#

三、动态库编译链接

# Makefile文件lib_srcs := $(filter-out src/main.cpp,$(shell find src -name *.cpp))
lib_objs := $(patsubst src/%.cpp,obj/%.o, $(lib_srcs))include_paths := $(shell pwd)/include/library_paths := $(shell pwd)/lib/
library_names := mymathI_options := $(include_paths:%=-I%)
l_options := $(library_names:%=-l%)
L_options := $(library_paths:%=-L%)compile_flags := $(I_options) -w -O3 -std=c++11 -fpic
linking_flags := $(l_options) $(L_options)# ================ 编译动态库 ===============obj/%.o : src/%.cppg++ -c $^ -o $@ $(compile_flags)lib/libmymath.so : $(lib_objs)@mkdir -p $(dir $@)g++ -shared $^ -o $@shared_lib : lib/libmymath.so# ================ 链接动态库 ===============obj/main.o : src/main.cpp@mkdir -p $(dir $@)g++ -c $^ -o $@ $(compile_flags)workspace/math.exe : obj/main.o@mkdir -p $(dir $@)ln -s $(library_paths)/libmymath.so /lib64/libmymath.sog++ $^ -o $@ $(linking_flags)# ================ 运行与测试 ===============run : workspace/math.exe@./$<test :@echo "lib_srcs: " $(lib_srcs)@echo "lib_objs: " $(lib_objs)@echo "include_paths: " $(include_paths)@echo "compile_opts: " $(compile_opts)clean:rm -rf obj/* workspace lib /lib64/libmymath.so.PHONY: test clean run

# 动态库编译链接过程(base) [root@localhost 09_test]# tree .
.
├── include
│   ├── add.hpp
│   └── sub.hpp
├── makefile
├── obj
└── src├── add.cpp├── main.cpp└── sub.cpp3 directories, 6 files
(base) [root@localhost 09_test]# make shared_lib
g++ -c src/add.cpp -o obj/add.o -I/root/gitee/Test/Make_Learn/09_test/include/ -w -O3 -std=c++11 -fpic
g++ -c src/sub.cpp -o obj/sub.o -I/root/gitee/Test/Make_Learn/09_test/include/ -w -O3 -std=c++11 -fpic
g++ -shared obj/add.o obj/sub.o -o lib/libmymath.so
(base) [root@localhost 09_test]# make run
g++ -c src/main.cpp -o obj/main.o -I/root/gitee/Test/Make_Learn/09_test/include/ -w -O3 -std=c++11 -fpic
ln -s /root/gitee/Test/Make_Learn/09_test/lib//libmymath.so /lib64/libmymath.so
g++ obj/main.o -o workspace/math.exe -lmymath -L/root/gitee/Test/Make_Learn/09_test/lib/
10 + 5 = 15
10 - 5 = 5
(base) [root@localhost 09_test]# tree .
.
├── include
│   ├── add.hpp
│   └── sub.hpp
├── lib
│   └── libmymath.so
├── makefile
├── obj
│   ├── add.o
│   ├── main.o
│   └── sub.o
├── src
│   ├── add.cpp
│   ├── main.cpp
│   └── sub.cpp
└── workspace└── math.exe5 directories, 11 files
(base) [root@localhost 09_test]#