title: installing dlib on windows 10 64bit but running into an error
body: <p>I get the following error in cmd when attempting to install dlib for opencv project. Have very little experience with coding thus can't solve this problem.</p>
  
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  <pre class="snippet-code-css lang-css prettyprint-override"><code>Building wheels for collected packages: dlib
    Running setup.py bdist_wheel for dlib ... error
    Complete output from command "c:\users\nirvaan garg\python\envs\opencv-env\python.exe" -u -c "import setuptools, tokenize;__file__='C:\\Users\\NIRVAA~2\\AppData\\Local\\Temp\\pip-install-c151e5gm\\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\NIRVAA~2\AppData\Local\Temp\pip-wheel-z39mbbtm --python-tag cp36:
    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 3.6.6 |Anaconda, Inc.| (default, Jun 28 2018, 11:27:44) [MSC v.1900 64 bit (AMD64)]
    Invoking CMake setup: 'cmake C:\Users\NIRVAA~2\AppData\Local\Temp\pip-install-c151e5gm\dlib\tools\python -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\Users\NIRVAA~2\AppData\Local\Temp\pip-install-c151e5gm\dlib\build\lib.win-amd64-3.6 -DPYTHON_EXECUTABLE=c:\users\nirvaan garg\python\envs\opencv-env\python.exe -DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\Users\NIRVAA~2\AppData\Local\Temp\pip-install-c151e5gm\dlib\build\lib.win-amd64-3.6 -A x64'
    -- Building for: NMake Makefiles
    CMake Error in CMakeLists.txt:
      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/Nirvaan Garg/AppData/Local/Temp/pip-install-c151e5gm/dlib/build/temp.win-amd64-3.6/Release/CMakeFiles/CMakeOutput.log".
    Traceback (most recent call last):
      File "&lt;string&gt;", line 1, in &lt;module&gt;
      File "C:\Users\NIRVAA~2\AppData\Local\Temp\pip-install-c151e5gm\dlib\setup.py", line 257, in &lt;module&gt;
        'Topic :: Software Development',
      File "c:\users\nirvaan garg\python\envs\opencv-env\lib\site-packages\setuptools\__init__.py", line 140, in setup
        return distutils.core.setup(**attrs)
      File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\core.py", line 148, in setup
        dist.run_commands()
      File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\dist.py", line 955, in run_commands
        self.run_command(cmd)
      File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\dist.py", line 974, in run_command
        cmd_obj.run()
      File "c:\users\nirvaan garg\python\envs\opencv-env\lib\site-packages\wheel\bdist_wheel.py", line 188, in run
        self.run_command('build')
      File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\cmd.py", line 313, in run_command
        self.distribution.run_command(command)
      File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\dist.py", line 974, in run_command
        cmd_obj.run()
      File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\command\build.py", line 135, in run
        self.run_command(cmd_name)
      File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\cmd.py", line 313, in run_command
        self.distribution.run_command(command)
      File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\dist.py", line 974, in run_command
        cmd_obj.run()
      File "C:\Users\NIRVAA~2\AppData\Local\Temp\pip-install-c151e5gm\dlib\setup.py", line 133, in run
        self.build_extension(ext)
      File "C:\Users\NIRVAA~2\AppData\Local\Temp\pip-install-c151e5gm\dlib\setup.py", line 170, in build_extension
        subprocess.check_call(cmake_setup, cwd=build_folder)
      File "c:\users\nirvaan garg\python\envs\opencv-env\lib\subprocess.py", line 291, in check_call
        raise CalledProcessError(retcode, cmd)
    subprocess.CalledProcessError: Command '['cmake', 'C:\\Users\\NIRVAA~2\\AppData\\Local\\Temp\\pip-install-c151e5gm\\dlib\\tools\\python', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\\Users\\NIRVAA~2\\AppData\\Local\\Temp\\pip-install-c151e5gm\\dlib\\build\\lib.win-amd64-3.6', '-DPYTHON_EXECUTABLE=c:\\users\\nirvaan garg\\python\\envs\\opencv-env\\python.exe', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\\Users\\NIRVAA~2\\AppData\\Local\\Temp\\pip-install-c151e5gm\\dlib\\build\\lib.win-amd64-3.6', '-A', 'x64']' returned non-zero exit status 1.
  
    ----------------------------------------
    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
      Complete output from command "c:\users\nirvaan garg\python\envs\opencv-env\python.exe" -u -c "import setuptools, tokenize;__file__='C:\\Users\\NIRVAA~2\\AppData\\Local\\Temp\\pip-install-c151e5gm\\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\NIRVAA~2\AppData\Local\Temp\pip-record-taftk18u\install-record.txt --single-version-externally-managed --compile:
      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 3.6.6 |Anaconda, Inc.| (default, Jun 28 2018, 11:27:44) [MSC v.1900 64 bit (AMD64)]
      Invoking CMake setup: 'cmake C:\Users\NIRVAA~2\AppData\Local\Temp\pip-install-c151e5gm\dlib\tools\python -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\Users\NIRVAA~2\AppData\Local\Temp\pip-install-c151e5gm\dlib\build\lib.win-amd64-3.6 -DPYTHON_EXECUTABLE=c:\users\nirvaan garg\python\envs\opencv-env\python.exe -DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\Users\NIRVAA~2\AppData\Local\Temp\pip-install-c151e5gm\dlib\build\lib.win-amd64-3.6 -A x64'
      -- Building for: NMake Makefiles
      CMake Error in CMakeLists.txt:
        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/Nirvaan Garg/AppData/Local/Temp/pip-install-c151e5gm/dlib/build/temp.win-amd64-3.6/Release/CMakeFiles/CMakeOutput.log".
      Traceback (most recent call last):
        File "&lt;string&gt;", line 1, in &lt;module&gt;
        File "C:\Users\NIRVAA~2\AppData\Local\Temp\pip-install-c151e5gm\dlib\setup.py", line 257, in &lt;module&gt;
          'Topic :: Software Development',
        File "c:\users\nirvaan garg\python\envs\opencv-env\lib\site-packages\setuptools\__init__.py", line 140, in setup
          return distutils.core.setup(**attrs)
        File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\core.py", line 148, in setup
          dist.run_commands()
        File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\dist.py", line 955, in run_commands
          self.run_command(cmd)
        File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\dist.py", line 974, in run_command
          cmd_obj.run()
        File "c:\users\nirvaan garg\python\envs\opencv-env\lib\site-packages\setuptools\command\install.py", line 61, in run
          return orig.install.run(self)
        File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\command\install.py", line 545, in run
          self.run_command('build')
        File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\cmd.py", line 313, in run_command
          self.distribution.run_command(command)
        File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\dist.py", line 974, in run_command
          cmd_obj.run()
        File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\command\build.py", line 135, in run
          self.run_command(cmd_name)
        File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\cmd.py", line 313, in run_command
          self.distribution.run_command(command)
        File "c:\users\nirvaan garg\python\envs\opencv-env\lib\distutils\dist.py", line 974, in run_command
          cmd_obj.run()
        File "C:\Users\NIRVAA~2\AppData\Local\Temp\pip-install-c151e5gm\dlib\setup.py", line 133, in run
          self.build_extension(ext)
        File "C:\Users\NIRVAA~2\AppData\Local\Temp\pip-install-c151e5gm\dlib\setup.py", line 170, in build_extension
          subprocess.check_call(cmake_setup, cwd=build_folder)
        File "c:\users\nirvaan garg\python\envs\opencv-env\lib\subprocess.py", line 291, in check_call
          raise CalledProcessError(retcode, cmd)
      subprocess.CalledProcessError: Command '['cmake', 'C:\\Users\\NIRVAA~2\\AppData\\Local\\Temp\\pip-install-c151e5gm\\dlib\\tools\\python', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\\Users\\NIRVAA~2\\AppData\\Local\\Temp\\pip-install-c151e5gm\\dlib\\build\\lib.win-amd64-3.6', '-DPYTHON_EXECUTABLE=c:\\users\\nirvaan garg\\python\\envs\\opencv-env\\python.exe', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\\Users\\NIRVAA~2\\AppData\\Local\\Temp\\pip-install-c151e5gm\\dlib\\build\\lib.win-amd64-3.6', '-A', 'x64']' returned non-zero exit status 1.
  
      ----------------------------------------
  Command ""c:\users\nirvaan garg\python\envs\opencv-env\python.exe" -u -c "import setuptools, tokenize;__file__='C:\\Users\\NIRVAA~2\\AppData\\Local\\Temp\\pip-install-c151e5gm\\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\NIRVAA~2\AppData\Local\Temp\pip-record-taftk18u\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\NIRVAA~2\AppData\Local\Temp\pip-install-c151e5gm\dlib\</code></pre>
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  </p>
  
  <p>I am not able to identify what aspect is actually causing the problem thus referring onto this site.
   do i have to install another version of CMake or reinstall dlib on a different version of python please let me know the most appropriate way of installing dlib on my pc </p>