Error reporting in some dependency libraries with dlib and Face_recognition installed

(face_recognition) C:\Users\FlynnLi>pip install dlib -i http://pypi.douban.com/simple --trusted-host pypi.douban.com
Looking in indexes: http://pypi.douban.com/simple
Collecting dlib
  Downloading http://pypi.doubanio.com/packages/63/92/05c3b98636661cb80d190a5a777dd94effcc14c0f6893222e5ca81e74fbc/dlib-19.19.0.tar.gz (3.2 MB)
     |████████████████████████████████| 3.2 MB 2.2 MB/s
Building wheels for collected packages: dlib
  Building wheel for dlib (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: 'D:\Python\Virtual\face_recognition\Scripts\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\FlynnLi\\AppData\\Local\\Temp\\pip-install-ywrf5o_o\\dlib\\setup.py'"'"'; __file__='"'"'C:\\Users\\FlynnLi\\AppData\\Local\\Temp\\pip-install-ywrf5o_o\\dlib\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\FlynnLi\AppData\Local\Temp\pip-wheel-4oqer9mq'
       cwd: C:\Users\FlynnLi\AppData\Local\Temp\pip-install-ywrf5o_o\dlib\
  Complete output (55 lines):
  running bdist_wheel
  running build
  running build_py
  package init file 'dlib\__init__.py' not found (or not a regular file)
  running build_ext
  Building extension for Python 3.7.5 (tags/v3.7.5:5c02a39a0b, Oct 15 2019, 00:11:34) [MSC v.1916 64 bit (AMD64)]
  Invoking CMake setup: 'cmake C:\Users\FlynnLi\AppData\Local\Temp\pip-install-ywrf5o_o\dlib\tools\python -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\Users\FlynnLi\AppData\Local\Temp\pip-install-ywrf5o_o\dlib\build\lib.win-amd64-3.7 -DPYTHON_EXECUTABLE=D:\Python\Virtual\face_recognition\Scripts\python.exe -DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\Users\FlynnLi\AppData\Local\Temp\pip-install-ywrf5o_o\dlib\build\lib.win-amd64-3.7 -A x64'
  -- Building for: NMake Makefiles
  CMake Error at CMakeLists.txt:3 (project):
    Generator

      NMake Makefiles

    does not support platform specification, but platform

      x64

    was specified.


  CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
  CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
  -- Configuring incomplete, errors occurred!
  See also "C:/Users/FlynnLi/AppData/Local/Temp/pip-install-ywrf5o_o/dlib/build/temp.win-amd64-3.7/Release/CMakeFiles/CMakeOutput.log".
  Traceback (most recent call last):
    File "<string>", line 1, in <module>
    File "C:\Users\FlynnLi\AppData\Local\Temp\pip-install-ywrf5o_o\dlib\setup.py", line 261, in <module>
      'Topic :: Software Development',
    File "D:\Python\Virtual\face_recognition\lib\site-packages\setuptools\__init__.py", line 144, in setup
      return distutils.core.setup(**attrs)
    File "d:\python\lib\distutils\core.py", line 148, in setup
      dist.run_commands()
    File "d:\python\lib\distutils\dist.py", line 966, in run_commands
      self.run_command(cmd)
    File "d:\python\lib\distutils\dist.py", line 985, in run_command
      cmd_obj.run()
    File "D:\Python\Virtual\face_recognition\lib\site-packages\wheel\bdist_wheel.py", line 223, in run
      self.run_command('build')
    File "d:\python\lib\distutils\cmd.py", line 313, in run_command
      self.distribution.run_command(command)
    File "d:\python\lib\distutils\dist.py", line 985, in run_command
      cmd_obj.run()
    File "d:\python\lib\distutils\command\build.py", line 135, in run
      self.run_command(cmd_name)
    File "d:\python\lib\distutils\cmd.py", line 313, in run_command
      self.distribution.run_command(command)
    File "d:\python\lib\distutils\dist.py", line 985, in run_command
      cmd_obj.run()
    File "C:\Users\FlynnLi\AppData\Local\Temp\pip-install-ywrf5o_o\dlib\setup.py", line 135, in run
      self.build_extension(ext)
    File "C:\Users\FlynnLi\AppData\Local\Temp\pip-install-ywrf5o_o\dlib\setup.py", line 172, in build_extension
      subprocess.check_call(cmake_setup, cwd=build_folder)
    File "d:\python\lib\subprocess.py", line 363, in check_call
      raise CalledProcessError(retcode, cmd)
  subprocess.CalledProcessError: Command '['cmake', 'C:\\Users\\FlynnLi\\AppData\\Local\\Temp\\pip-install-ywrf5o_o\\dlib\\tools\\python', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\\Users\\FlynnLi\\AppData\\Local\\Temp\\pip-install-ywrf5o_o\\dlib\\build\\lib.win-amd64-3.7', '-DPYTHON_EXECUTABLE=D:\\Python\\Virtual\\face_recognition\\Scripts\\python.exe', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\\Users\\FlynnLi\\AppData\\Local\\Temp\\pip-install-ywrf5o_o\\dlib\\build\\lib.win-amd64-3.7', '-A', 'x64']' returned non-zero exit status 1.
  ----------------------------------------
  ERROR: Failed building wheel for dlib
  Running setup.py clean for dlib
Failed to build dlib
Installing collected packages: dlib
    Running setup.py install for dlib ... error
    ERROR: Command errored out with exit status 1:
     command: 'D:\Python\Virtual\face_recognition\Scripts\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\FlynnLi\\AppData\\Local\\Temp\\pip-install-ywrf5o_o\\dlib\\setup.py'"'"'; __file__='"'"'C:\\Users\\FlynnLi\\AppData\\Local\\Temp\\pip-install-ywrf5o_o\\dlib\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\FlynnLi\AppData\Local\Temp\pip-record-vngiiz8h\install-record.txt' --single-version-externally-managed --compile --install-headers 'D:\Python\Virtual\face_recognition\include\site\python3.7\dlib'
         cwd: C:\Users\FlynnLi\AppData\Local\Temp\pip-install-ywrf5o_o\dlib\
    Complete output (57 lines):
    running install
    running build
    running build_py
    package init file 'dlib\__init__.py' not found (or not a regular file)
    running build_ext
    Building extension for Python 3.7.5 (tags/v3.7.5:5c02a39a0b, Oct 15 2019, 00:11:34) [MSC v.1916 64 bit (AMD64)]
    Invoking CMake setup: 'cmake C:\Users\FlynnLi\AppData\Local\Temp\pip-install-ywrf5o_o\dlib\tools\python -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\Users\FlynnLi\AppData\Local\Temp\pip-install-ywrf5o_o\dlib\build\lib.win-amd64-3.7 -DPYTHON_EXECUTABLE=D:\Python\Virtual\face_recognition\Scripts\python.exe -DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\Users\FlynnLi\AppData\Local\Temp\pip-install-ywrf5o_o\dlib\build\lib.win-amd64-3.7 -A x64'
    -- Building for: NMake Makefiles
    CMake Error at CMakeLists.txt:3 (project):
      Generator

        NMake Makefiles

      does not support platform specification, but platform

        x64

      was specified.


    CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
    CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
    -- Configuring incomplete, errors occurred!
    See also "C:/Users/FlynnLi/AppData/Local/Temp/pip-install-ywrf5o_o/dlib/build/temp.win-amd64-3.7/Release/CMakeFiles/CMakeOutput.log".
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Users\FlynnLi\AppData\Local\Temp\pip-install-ywrf5o_o\dlib\setup.py", line 261, in <module>
        'Topic :: Software Development',
      File "D:\Python\Virtual\face_recognition\lib\site-packages\setuptools\__init__.py", line 144, in setup
        return distutils.core.setup(**attrs)
      File "d:\python\lib\distutils\core.py", line 148, in setup
        dist.run_commands()
      File "d:\python\lib\distutils\dist.py", line 966, in run_commands
        self.run_command(cmd)
      File "d:\python\lib\distutils\dist.py", line 985, in run_command
        cmd_obj.run()
      File "D:\Python\Virtual\face_recognition\lib\site-packages\setuptools\command\install.py", line 61, in run
        return orig.install.run(self)
      File "d:\python\lib\distutils\command\install.py", line 545, in run
        self.run_command('build')
      File "d:\python\lib\distutils\cmd.py", line 313, in run_command
        self.distribution.run_command(command)
      File "d:\python\lib\distutils\dist.py", line 985, in run_command
        cmd_obj.run()
      File "d:\python\lib\distutils\command\build.py", line 135, in run
        self.run_command(cmd_name)
      File "d:\python\lib\distutils\cmd.py", line 313, in run_command
        self.distribution.run_command(command)
      File "d:\python\lib\distutils\dist.py", line 985, in run_command
        cmd_obj.run()
      File "C:\Users\FlynnLi\AppData\Local\Temp\pip-install-ywrf5o_o\dlib\setup.py", line 135, in run
        self.build_extension(ext)
      File "C:\Users\FlynnLi\AppData\Local\Temp\pip-install-ywrf5o_o\dlib\setup.py", line 172, in build_extension
        subprocess.check_call(cmake_setup, cwd=build_folder)
      File "d:\python\lib\subprocess.py", line 363, in check_call
        raise CalledProcessError(retcode, cmd)
    subprocess.CalledProcessError: Command '['cmake', 'C:\\Users\\FlynnLi\\AppData\\Local\\Temp\\pip-install-ywrf5o_o\\dlib\\tools\\python', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\\Users\\FlynnLi\\AppData\\Local\\Temp\\pip-install-ywrf5o_o\\dlib\\build\\lib.win-amd64-3.7', '-DPYTHON_EXECUTABLE=D:\\Python\\Virtual\\face_recognition\\Scripts\\python.exe', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\\Users\\FlynnLi\\AppData\\Local\\Temp\\pip-install-ywrf5o_o\\dlib\\build\\lib.win-amd64-3.7', '-A', 'x64']' returned non-zero exit status 1.
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'D:\Python\Virtual\face_recognition\Scripts\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\FlynnLi\\AppData\\Local\\Temp\\pip-install-ywrf5o_o\\dlib\\setup.py'"'"'; __file__='"'"'C:\\Users\\FlynnLi\\AppData\\Local\\Temp\\pip-install-ywrf5o_o\\dlib\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\FlynnLi\AppData\Local\Temp\pip-record-vngiiz8h\install-record.txt' --single-version-externally-managed --compile --install-headers 'D:\Python\Virtual\face_recognition\include\site\python3.7\dlib' Check the logs for full command output.

Anaconda is downloaded according to the Suggestions on the Internet, conda is used to download, and the virtual environment is created before downloading

conda create -n face python=3.7 #Python3.7
activate face 

Installing Opencv has reported another error… Don’t recurse…

 D:\Anaconda\envs>conda install opencv-python
Collecting package metadata (current_repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.
Collecting package metadata (repodata.json): done
Solving environment: failed with initial frozen solve. Retrying with flexible solve.

Actually, the name of the package under Python is OpencV-Python, and Anaconda is Opencv

conda install -c conda-forge opencv

Error reporting also occurred when installing the face_recognition library, and the solution is to use

pip install --no-dependencies face_recognition

And then I can introduce usage and write code normally.