CMakeList设置输出bin和lib目录

# 方案

```bash
cmake_minimum_required(VERSION 3.10)
project(MyProject)

# 设置构建目录下的 bin 和 lib 子目录
set(BIN_DIR ${CMAKE_BINARY_DIR}/bin)
set(LIB_DIR ${CMAKE_BINARY_DIR}/lib)

# 设置所有构建类型的默认输出目录
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${BIN_DIR})
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${LIB_DIR})
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${LIB_DIR})

# 设置 Debug 和 Release 模式的输出目录
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG ${BIN_DIR}/Debug)
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE ${BIN_DIR}/Release)

set(CMAKE_LIBRARY_OUTPUT_DIRECTORY_DEBUG ${LIB_DIR}/Debug)
set(CMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE ${LIB_DIR}/Release)

set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_DEBUG ${LIB_DIR}/Debug)
set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_RELEASE ${LIB_DIR}/Release)

# 添加可执行文件
add_executable(MyApp main.cpp)

# 添加动态库
add_library(MySharedLib SHARED src/mylib.cpp)

# 添加静态库
add_library(MyStaticLib STATIC src/mylib_static.cpp)

# 链接动态库到可执行文件
target_link_libraries(MyApp PRIVATE MySharedLib)
```

==输出效果：==
```bash
build/
├── bin/
│   ├── Debug/
│   │   └── MyApp  # Debug 模式的可执行文件
│   └── Release/
│       └── MyApp  # Release 模式的可执行文件
└── lib/
    ├── Debug/
    │   ├── libMySharedLib.so  # Debug 模式的动态库
    │   └── libMyStaticLib.a   # Debug 模式的静态库
    └── Release/
        ├── libMySharedLib.so  # Release 模式的动态库
        └── libMyStaticLib.a   # Release 模式的静态库
```