title: cl.exe is not able to compile a simple test program VS2017
body: <p>I am trying to compile my c++ project on VS2017 with CMake (I am using windows 10 x64).
  Here is my <code>tasks.json</code>:</p>
  
  <pre><code>{
  "version": "2.0.0",
  "tasks": [
      {
          "label": "CMake Debug",
          "type": "shell",
          "options": {
              "cwd": "${workspaceRoot}/build"
          },
          "command": "CMake",
          "args": [
              "-G",
              "NMake Makefiles",
              "-DCMAKE_BUILD_TYPE=Debug",
              ".."
          ],
          "problemMatcher": [
              "$gcc"
          ]
      },
      {
          "label": "Make",
          "type": "shell",
          "options": {
              "cwd": "${workspaceRoot}/build"
          },
          "command": "nmake",
          "group": {
              "kind": "build",
              "isDefault": true
          }
      }
  ]
  </code></pre>
  
  <p>}</p>
  
  <p>And when I run the CMake Debug task, I got the following error:</p>
  
  <pre><code>Executing task: CMake -G 'NMake Makefiles' -DCMAKE_BUILD_TYPE=Debug .. &lt;
  
  -- The C compiler identification is unknown
  -- The CXX compiler identification is unknown
  -- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx64/x86/cl.exe
  -- Check for working C compiler: C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx64/x86/cl.exe -- broken
  CMake Error at C:/Program Files/CMake/share/cmake-3.12/Modules/CMakeTestCCompiler.cmake:52 (message):
    The C compiler
  
      "C:/Program Files (x86)/Microsoft Visual Studio/2017/Community/VC/Tools/MSVC/14.16.27023/bin/Hostx64/x86/cl.exe"
  
    is not able to compile a simple test program.
  
    It fails with the following output:
  
      Change Dir: C:/Users/Paul/Desktop/EIP/Cryptagora-prisma/monitoring_tool/build/CMakeFiles/CMakeTmp
  
      Run Build Command:"nmake" "/nologo" "cmTC_8304c\fast"
          "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\HostX64\x64\nmake.exe" -f CMakeFiles\cmTC_8304c.dir\build.make /nologo -L                  CMakeFiles\cmTC_8304c.dir\build
      Building C object CMakeFiles/cmTC_8304c.dir/testCCompiler.c.obj
          C:\PROGRA~2\MICROS~2\2017\COMMUN~1\VC\Tools\MSVC\1416~1.270\bin\Hostx64\x86\cl.exe    -o CMakeFiles\cmTC_8304c.dir\testCCompiler.c.obj   -c C:\Users\Paul\Desktop\EIP\Cryptagora-prisma\monitoring_tool\build\CMakeFiles\CMakeTmp\testCCompiler.c
      NMAKE : fatal error U1045: Úchec de la gÚnÚration dynamiqueá: Invalid argument
      Stop.
      NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.16.27023\bin\HostX64\x64\nmake.exe"'á: code retour '0x2'
      Stop.
  
  
  
  
    CMake will not be able to correctly generate this project.
  Call Stack (most recent call first):
    CMakeLists.txt:3 (project)
  
  
  -- Configuring incomplete, errors occurred!
  See also "C:/Users/Paul/Desktop/EIP/Cryptagora-prisma/monitoring_tool/build/CMakeFiles/CMakeOutput.log".
  See also "C:/Users/Paul/Desktop/EIP/Cryptagora-prisma/monitoring_tool/build/CMakeFiles/CMakeError.log".
  The terminal process terminated with exit code: 1
  </code></pre>
  
  <p>This was working perfectly yesterday. </p>