[BUG]Pip 安装提示需要C++14.0以上生成工具

[rosefun]

问题描述（Question description）

    Complete output from command python setup.py egg_info:
    Testing support for clang
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Users\Rosefun\AppData\Local\Temp\pip-install-lx38hx1j\pycryptodome\setup.py", line 468, in <module>
        set_compiler_options(package_root, ext_modules)
      File "C:\Users\Rosefun\AppData\Local\Temp\pip-install-lx38hx1j\pycryptodome\compiler_opt.py", line 341, in set_compiler_options
        clang = compiler_is_clang()
      File "C:\Users\Rosefun\AppData\Local\Temp\pip-install-lx38hx1j\pycryptodome\compiler_opt.py", line 251, in compiler_is_clang
        return test_compilation(source, msg="clang")
      File "C:\Users\Rosefun\AppData\Local\Temp\pip-install-lx38hx1j\pycryptodome\compiler_opt.py", line 82, in test_compilation
        objects = compiler.compile([fname], extra_postargs=extra_cc_options)
      File "D:\DeepLearningInstall\anaconda3.5\lib\distutils\_msvccompiler.py", line 345, in compile
        self.initialize()
      File "D:\DeepLearningInstall\anaconda3.5\lib\distutils\_msvccompiler.py", line 238, in initialize
        vc_env = _get_vc_env(plat_spec)
      File "D:\DeepLearningInstall\anaconda3.5\lib\site-packages\setuptools\msvc.py", line 312, in msvc14_get_vc_env
        return _msvc14_get_vc_env(plat_spec)
      File "D:\DeepLearningInstall\anaconda3.5\lib\site-packages\setuptools\msvc.py", line 267, in _msvc14_get_vc_env
        "Unable to find vcvarsall.bat"
    distutils.errors.DistutilsPlatformError: Microsoft Visual C++ 14.0 or greater is required. Get it with "Microsoft C++ Build Tools": https://visualstudio.microsoft.com/visual-cpp-build-tools/

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in C:\Users\Rosefun\AppData\Local\Temp\pip-install-lx38hx1j\pycryptodome\