title: CMake on Windows
body: <p>I am trying to run CMake on Windows, and I get the following error:</p>
  
  <pre><code>-- The C compiler identification is unknown
  CMake Error at CMakeLists.txt:3 (PROJECT):
    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.
  </code></pre>
  
  <p>However my "CC" environment variable is set!</p>
  
  <pre><code>&gt;&gt;echo %CC%
  C:\Anaconda2\MinGW\x86_64-w64-mingw32\bin\gcc.exe
  </code></pre>