title: Dlib installation error?
body: <p>Visual studio 2015 is not installed
  I have installed all the requirements before building dlib in python:
  Cmake</p>
  
  <p>python 3.6 and other bindings.</p>
  
  <p>while installing dlib using pip:</p>
  
  <pre><code>pip install dlib
  </code></pre>
  
  <p>Got an error:</p>
  
  <pre><code>Collecting dlib
    Using cached https://files.pythonhosted.org/packages/df/aa/6a9bb2a763107bb2606d6ee1aa65fcd3b51375a9ef6436e9c9280b0dd63c/dlib-19.15.0.tar.gz
  Building wheels for collected packages: dlib
    Running setup.py bdist_wheel for dlib ... error
    Complete output from command "c:\users\vikas tiwari\anaconda3\python.exe" -u -c "import setuptools, tokenize;__file__='C:\\Users\\VIKAST~1\\AppData\\Local\\Temp\\pip-install-4f4b8868\\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\VIKAST~1\AppData\Local\Temp\pip-wheel-nnayeybw --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 3.6.5 |Anaconda, Inc.| (default, Mar 29 2018, 13:32:41) [MSC v.1900 64 bit (AMD64)]
    Invoking CMake setup: 'cmake C:\Users\VIKAST~1\AppData\Local\Temp\pip-install-4f4b8868\dlib\tools\python -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\Users\VIKAST~1\AppData\Local\Temp\pip-install-4f4b8868\dlib\build\lib.win-amd64-3.6 -DPYTHON_EXECUTABLE=c:\users\vikas tiwari\anaconda3\python.exe -DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\Users\VIKAST~1\AppData\Local\Temp\pip-install-4f4b8868\dlib\build\lib.win-amd64-3.6 -A x64'
    -- Building for: Visual Studio 14 2015
    -- Selecting Windows SDK version  to target Windows 10.0.17134.
    CMake Error in CMakeLists.txt:
      Failed to run MSBuild command:
  
        C:/Program Files (x86)/MSBuild/14.0/bin/MSBuild.exe
  
      to get the value of VCTargetsPath:
  
        Microsoft (R) Build Engine version 14.0.25420.1
        Copyright (C) Microsoft Corporation. All rights reserved.
  
        Build started 8/7/2018 1:07:47 PM.
        Project "C:\Users\Vikas Tiwari\AppData\Local\Temp\pip-install-4f4b8868\dlib\build\temp.win-amd64-3.6\Release\CMakeFiles\3.12.0\VCTargetsPath.vcxproj" on node 1 (default targets).
        C:\Users\Vikas Tiwari\AppData\Local\Temp\pip-install-4f4b8868\dlib\build\temp.win-amd64-3.6\Release\CMakeFiles\3.12.0\VCTargetsPath.vcxproj(14,2): error MSB4019: The imported project "C:\Microsoft.Cpp.Default.props" was not found. Confirm that the path in the &lt;Import&gt; declaration is correct, and that the file exists on disk.
        Done Building Project "C:\Users\Vikas Tiwari\AppData\Local\Temp\pip-install-4f4b8868\dlib\build\temp.win-amd64-3.6\Release\CMakeFiles\3.12.0\VCTargetsPath.vcxproj" (default targets) -- FAILED.
  
        Build FAILED.
  
        "C:\Users\Vikas Tiwari\AppData\Local\Temp\pip-install-4f4b8868\dlib\build\temp.win-amd64-3.6\Release\CMakeFiles\3.12.0\VCTargetsPath.vcxproj" (default target) (1) -&gt;
          C:\Users\Vikas Tiwari\AppData\Local\Temp\pip-install-4f4b8868\dlib\build\temp.win-amd64-3.6\Release\CMakeFiles\3.12.0\VCTargetsPath.vcxproj(14,2): error MSB4019: The imported project "C:\Microsoft.Cpp.Default.props" was not found. Confirm that the path in the &lt;Import&gt; declaration is correct, and that the file exists on disk.
  
            0 Warning(s)
            1 Error(s)
  
        Time Elapsed 00:00:00.03
  
  
      Exit code: 1
  
  
  
    -- Configuring incomplete, errors occurred!
    See also "C:/Users/Vikas Tiwari/AppData/Local/Temp/pip-install-4f4b8868/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\VIKAST~1\AppData\Local\Temp\pip-install-4f4b8868\dlib\setup.py", line 257, in &lt;module&gt;
        'Topic :: Software Development',
      File "c:\users\vikas tiwari\anaconda3\lib\site-packages\setuptools\__init__.py", line 129, in setup
        return distutils.core.setup(**attrs)
      File "c:\users\vikas tiwari\anaconda3\lib\distutils\core.py", line 148, in setup
        dist.run_commands()
      File "c:\users\vikas tiwari\anaconda3\lib\distutils\dist.py", line 955, in run_commands
        self.run_command(cmd)
      File "c:\users\vikas tiwari\anaconda3\lib\distutils\dist.py", line 974, in run_command
        cmd_obj.run()
      File "c:\users\vikas tiwari\anaconda3\lib\site-packages\wheel\bdist_wheel.py", line 202, in run
        self.run_command('build')
      File "c:\users\vikas tiwari\anaconda3\lib\distutils\cmd.py", line 313, in run_command
        self.distribution.run_command(command)
      File "c:\users\vikas tiwari\anaconda3\lib\distutils\dist.py", line 974, in run_command
        cmd_obj.run()
      File "c:\users\vikas tiwari\anaconda3\lib\distutils\command\build.py", line 135, in run
        self.run_command(cmd_name)
      File "c:\users\vikas tiwari\anaconda3\lib\distutils\cmd.py", line 313, in run_command
        self.distribution.run_command(command)
      File "c:\users\vikas tiwari\anaconda3\lib\distutils\dist.py", line 974, in run_command
        cmd_obj.run()
      File "C:\Users\VIKAST~1\AppData\Local\Temp\pip-install-4f4b8868\dlib\setup.py", line 133, in run
        self.build_extension(ext)
      File "C:\Users\VIKAST~1\AppData\Local\Temp\pip-install-4f4b8868\dlib\setup.py", line 170, in build_extension
        subprocess.check_call(cmake_setup, cwd=build_folder)
      File "c:\users\vikas tiwari\anaconda3\lib\subprocess.py", line 291, in check_call
        raise CalledProcessError(retcode, cmd)
    subprocess.CalledProcessError: Command '['cmake', 'C:\\Users\\VIKAST~1\\AppData\\Local\\Temp\\pip-install-4f4b8868\\dlib\\tools\\python', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\\Users\\VIKAST~1\\AppData\\Local\\Temp\\pip-install-4f4b8868\\dlib\\build\\lib.win-amd64-3.6', '-DPYTHON_EXECUTABLE=c:\\users\\vikas tiwari\\anaconda3\\python.exe', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\\Users\\VIKAST~1\\AppData\\Local\\Temp\\pip-install-4f4b8868\\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\vikas tiwari\anaconda3\python.exe" -u -c "import setuptools, tokenize;__file__='C:\\Users\\VIKAST~1\\AppData\\Local\\Temp\\pip-install-4f4b8868\\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\VIKAST~1\AppData\Local\Temp\pip-record-aol24hcc\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 3.6.5 |Anaconda, Inc.| (default, Mar 29 2018, 13:32:41) [MSC v.1900 64 bit (AMD64)]
      Invoking CMake setup: 'cmake C:\Users\VIKAST~1\AppData\Local\Temp\pip-install-4f4b8868\dlib\tools\python -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\Users\VIKAST~1\AppData\Local\Temp\pip-install-4f4b8868\dlib\build\lib.win-amd64-3.6 -DPYTHON_EXECUTABLE=c:\users\vikas tiwari\anaconda3\python.exe -DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\Users\VIKAST~1\AppData\Local\Temp\pip-install-4f4b8868\dlib\build\lib.win-amd64-3.6 -A x64'
      -- Building for: Visual Studio 14 2015
      -- Selecting Windows SDK version  to target Windows 10.0.17134.
      CMake Error in CMakeLists.txt:
        Failed to run MSBuild command:
  
          C:/Program Files (x86)/MSBuild/14.0/bin/MSBuild.exe
  
        to get the value of VCTargetsPath:
  
          Microsoft (R) Build Engine version 14.0.25420.1
          Copyright (C) Microsoft Corporation. All rights reserved.
  
          Build started 8/7/2018 1:07:50 PM.
          Project "C:\Users\Vikas Tiwari\AppData\Local\Temp\pip-install-4f4b8868\dlib\build\temp.win-amd64-3.6\Release\CMakeFiles\3.12.0\VCTargetsPath.vcxproj" on node 1 (default targets).
          C:\Users\Vikas Tiwari\AppData\Local\Temp\pip-install-4f4b8868\dlib\build\temp.win-amd64-3.6\Release\CMakeFiles\3.12.0\VCTargetsPath.vcxproj(14,2): error MSB4019: The imported project "C:\Microsoft.Cpp.Default.props" was not found. Confirm that the path in the &lt;Import&gt; declaration is correct, and that the file exists on disk.
          Done Building Project "C:\Users\Vikas Tiwari\AppData\Local\Temp\pip-install-4f4b8868\dlib\build\temp.win-amd64-3.6\Release\CMakeFiles\3.12.0\VCTargetsPath.vcxproj" (default targets) -- FAILED.
  
          Build FAILED.
  
          "C:\Users\Vikas Tiwari\AppData\Local\Temp\pip-install-4f4b8868\dlib\build\temp.win-amd64-3.6\Release\CMakeFiles\3.12.0\VCTargetsPath.vcxproj" (default target) (1) -&gt;
            C:\Users\Vikas Tiwari\AppData\Local\Temp\pip-install-4f4b8868\dlib\build\temp.win-amd64-3.6\Release\CMakeFiles\3.12.0\VCTargetsPath.vcxproj(14,2): error MSB4019: The imported project "C:\Microsoft.Cpp.Default.props" was not found. Confirm that the path in the &lt;Import&gt; declaration is correct, and that the file exists on disk.
  
              0 Warning(s)
              1 Error(s)
  
          Time Elapsed 00:00:00.03
  
  
        Exit code: 1
  
  
  
      -- Configuring incomplete, errors occurred!
      See also "C:/Users/Vikas Tiwari/AppData/Local/Temp/pip-install-4f4b8868/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\VIKAST~1\AppData\Local\Temp\pip-install-4f4b8868\dlib\setup.py", line 257, in &lt;module&gt;
          'Topic :: Software Development',
        File "c:\users\vikas tiwari\anaconda3\lib\site-packages\setuptools\__init__.py", line 129, in setup
          return distutils.core.setup(**attrs)
        File "c:\users\vikas tiwari\anaconda3\lib\distutils\core.py", line 148, in setup
          dist.run_commands()
        File "c:\users\vikas tiwari\anaconda3\lib\distutils\dist.py", line 955, in run_commands
          self.run_command(cmd)
        File "c:\users\vikas tiwari\anaconda3\lib\distutils\dist.py", line 974, in run_command
          cmd_obj.run()
        File "c:\users\vikas tiwari\anaconda3\lib\site-packages\setuptools\command\install.py", line 61, in run
          return orig.install.run(self)
        File "c:\users\vikas tiwari\anaconda3\lib\distutils\command\install.py", line 545, in run
          self.run_command('build')
        File "c:\users\vikas tiwari\anaconda3\lib\distutils\cmd.py", line 313, in run_command
          self.distribution.run_command(command)
        File "c:\users\vikas tiwari\anaconda3\lib\distutils\dist.py", line 974, in run_command
          cmd_obj.run()
        File "c:\users\vikas tiwari\anaconda3\lib\distutils\command\build.py", line 135, in run
          self.run_command(cmd_name)
        File "c:\users\vikas tiwari\anaconda3\lib\distutils\cmd.py", line 313, in run_command
          self.distribution.run_command(command)
        File "c:\users\vikas tiwari\anaconda3\lib\distutils\dist.py", line 974, in run_command
          cmd_obj.run()
        File "C:\Users\VIKAST~1\AppData\Local\Temp\pip-install-4f4b8868\dlib\setup.py", line 133, in run
          self.build_extension(ext)
        File "C:\Users\VIKAST~1\AppData\Local\Temp\pip-install-4f4b8868\dlib\setup.py", line 170, in build_extension
          subprocess.check_call(cmake_setup, cwd=build_folder)
        File "c:\users\vikas tiwari\anaconda3\lib\subprocess.py", line 291, in check_call
          raise CalledProcessError(retcode, cmd)
      subprocess.CalledProcessError: Command '['cmake', 'C:\\Users\\VIKAST~1\\AppData\\Local\\Temp\\pip-install-4f4b8868\\dlib\\tools\\python', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\\Users\\VIKAST~1\\AppData\\Local\\Temp\\pip-install-4f4b8868\\dlib\\build\\lib.win-amd64-3.6', '-DPYTHON_EXECUTABLE=c:\\users\\vikas tiwari\\anaconda3\\python.exe', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE=C:\\Users\\VIKAST~1\\AppData\\Local\\Temp\\pip-install-4f4b8868\\dlib\\build\\lib.win-amd64-3.6', '-A', 'x64']' returned non-zero exit status 1.
  
      ----------------------------------------
  Command ""c:\users\vikas tiwari\anaconda3\python.exe" -u -c "import setuptools, tokenize;__file__='C:\\Users\\VIKAST~1\\AppData\\Local\\Temp\\pip-install-4f4b8868\\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\VIKAST~1\AppData\Local\Temp\pip-record-aol24hcc\install-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\VIKAST~1\AppData\Local\Temp\pip-install-4f4b8868\dlib\
  </code></pre>
  
  <p>I really don't have any idea what's the real issue here. Do i have to install Visual Studio to compile c++ files of dlib ?
  Don't have VS 2015 installed right now!!</p>