在GitHub上下了openVR，不懂怎么安装，用make install 提示“make: *** No rule to make target `install'. Stop.”
readme里面的内容我黏贴出来，请大神指导一下：
## Dependencies

* Qt 5.x
* GLEW 1.11+
* SDL2
* OpenVR

    The only general external dependency is Qt5.

On GNU/Linux, you will need GLEW 1.11 (available on most package manager).

On Windows x64, you will need the SDL2 runtime library.

## Build

**Important:**

*you might need to specify Qt5 cmake module path manually when generating the cache for the first time using the __CMAKE_PREFIX_PATH__ macro (see examples below).*

We will use the command-line on Unix and [Git Bash](https://git-for-windows.github.io/) on Windows.

    First, move from the repository root to the samples directory to create a build directory:
```
cd samples
mkdir build; cd build
```

Then, depending on your system:

### Unix

Generate the CMake cache using Makefile:
```
cmake .. -G Makefile -DCMAKE_PREFIX_PATH=/opt/Qt/5.6/gcc_64/lib/cmake -DCMAKE_BUILD_TYPE=Release
```

To build type:
```
make -j4
```

有几个疑问：
1、* Qt 5.x
* GLEW 1.11+这两个deepin系统里面有吗，还是要单独在下载呀？
2、在第一次生成缓存时，可能需要手动指定Qt5 cmake模块路径，具体怎么操作呀？
3、第一步中：“从存储库根目录移动到样例目录以创建构建目录”是直接在终端里面输入代码
```
cd samples
mkdir build; cd build
```
是吗？
4、Generate the CMake cache using Makefile:我没有找到Makefile，也是直接在终端里面输入代码吗？