在Windows上安装dlib时出现Cmake错误？(Cmake Error During Installation of dlib on Windows?)

我试图在Window 7中安装dlib-19.2，但在dlib的构建过程中，我收到了这些错误。

Configuring cmake ...
-- Building for: NMake Makefiles
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
CMake Error in CMakeLists.txt:
  The CMAKE_C_COMPILER:
    cl
  is not a full path and was not found in the PATH.
  To use the NMake generator with Visual C++, cmake must be run from a shell
  that can use the compiler cl from the command line.  This environment is
  unable to invoke the cl compiler.  To fix this problem, run cmake from the
  Visual Studio Command Prompt (vcvarsall.bat).
  Tell CMake where to find the compiler by setting either the environment
  variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
  the compiler, or to the compiler name if it is in the PATH.
CMake Error in CMakeLists.txt:
  The CMAKE_CXX_COMPILER:
    cl
  is not a full path and was not found in the PATH.
  To use the NMake generator with Visual C++, cmake must be run from a shell
  that can use the compiler cl from the command line.  This environment is
  unable to invoke the cl compiler.  To fix this problem, run cmake from the
  Visual Studio Command Prompt (vcvarsall.bat).
  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.
-- Configuring incomplete, errors occurred!
See also "C:/dlib-19.2/tools/python/build/CMakeFiles/CMakeOutput.log".
See also "C:/dlib-19.2/tools/python/build/CMakeFiles/CMakeError.log".
error: cmake configuration failed!
                                           
  
 
 
 任何人都可以向我解释错误的原因以及如何避免它.Cmake GUI似乎工作得很好。 
I am trying to install dlib-19.2 in Window 7.But during the building process of dlib I get these errors.
 
 
 
  
  
Configuring cmake ...
-- Building for: NMake Makefiles
-- The C compiler identification is unknown
-- The CXX compiler identification is unknown
CMake Error in CMakeLists.txt:
  The CMAKE_C_COMPILER:
    cl
  is not a full path and was not found in the PATH.
  To use the NMake generator with Visual C++, cmake must be run from a shell
  that can use the compiler cl from the command line.  This environment is
  unable to invoke the cl compiler.  To fix this problem, run cmake from the
  Visual Studio Command Prompt (vcvarsall.bat).
  Tell CMake where to find the compiler by setting either the environment
  variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to
  the compiler, or to the compiler name if it is in the PATH.
CMake Error in CMakeLists.txt:
  The CMAKE_CXX_COMPILER:
    cl
  is not a full path and was not found in the PATH.
  To use the NMake generator with Visual C++, cmake must be run from a shell
  that can use the compiler cl from the command line.  This environment is
  unable to invoke the cl compiler.  To fix this problem, run cmake from the
  Visual Studio Command Prompt (vcvarsall.bat).
  Tell CMake where to find the compiler by setting either the environment
  variable "CXX" or the CMake cache entry CMAKE_CXX_COMPILER to the full path
  to the compiler, or to the compiler name if it is in the PATH.
-- Configuring incomplete, errors occurred!
See also "C:/dlib-19.2/tools/python/build/CMakeFiles/CMakeOutput.log".
See also "C:/dlib-19.2/tools/python/build/CMakeFiles/CMakeError.log".
error: cmake configuration failed!
                                           
  
 
 
Can anyone explain me the reason of the error and how to avoid it.Cmake GUI seems to work perfectly fine. 
                
最满意答案
                
                    
                        
 有同样的问题，安装Visual C ++ 2015构建工具为我解决它： http : //landinghub.visualstudio.com/visual-cpp-build-tools 
Had the same problem, installing Visual C++ 2015 Build Tools solved it for me: http://landinghub.visualstudio.com/visual-cpp-build-tools