[CMake] Is there any way to use clang-cl with MSBuild on Windows?

[Yi-Hong Lyu]

Hello Gilles,

Here it is:

PS > cmake -G "Visual Studio 14 2015" -T v140_clang_3_7
-DLLVM_PATH="E:\\llvm" -DCMAKE_SYSTEM_VERSION=8.1
 -DCMAKE_C_COMPILER="E:\\e2tools\\ext-tools\\llvm\\clang-cl.exe"
-DCMAKE_CXX_COMPILER="E:\\e2tools\\ext-tools\\llvm\\clang-cl.exe" ..\src\
-- The CXX compiler identification is unknown
-- The C compiler identification is unknown
-- Check for working CXX compiler using: Visual Studio 14 2015
-- Check for working CXX compiler using: Visual Studio 14 2015 -- broken
CMake Error at E:/CMake/clang_3_7/Modules/CMakeTestCXXCompiler.cmake:54
(message):
  The C++ compiler "E:\e2tools\ext-tools\llvm\clang-cl.exe" is not able to
  compile a simple test program.

  It fails with the following output:

   Change Dir: E:/libcxx/b-libcxx-Cascade-msbuild2/CMakeFiles/CMakeTmp

  Run Build Command:"C:/Program Files (x86)/MSBuild/14.0/bin/MSBuild.exe"
  "cmTC_00a23.vcxproj" "/p:Configuration=Debug"
"/p:VisualStudioVersion=14.0"

  Microsoft (R) Build Engine version 14.0.24720.0

  C:\Program Files

(x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.Cpp.Platform.targets(57,5):
  error MSB8020: The build tools for v140_clang_3_7 (Platform Toolset =
  'v140_clang_3_7') cannot be found.  To build using the v140_clang_3_7
build
  tools, please install v140_clang_3_7 build tools.  Alternatively, you may
  upgrade to the current Visual Studio tools by selecting the Project menu
or
  right-click the solution, and then selecting "Retarget solution".

[E:\libcxx\b-libcxx-Cascade-msbuild2\CMakeFiles\CMakeTmp\cmTC_00a23.vcxproj]

    C:\Program Files
(x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.Cpp.Platform.targets(57,5):
error MSB8020: The build tools for v140_clang_3_7 (Platform Toolset =
'v140_clang_3_7') cannot be found. To build using the v140_clang_3_7 build
tools, please install v140_clang_3_7 build tools.  Alternatively, you may
upgrade to the current Visual Studio tools by selecting the Project menu or
right-click the solution, and then selecting "Retarget solution".
[E:\libcxx\b-libcxx-Cascade-msbuild2\CMakeFiles\CMakeTmp\cmTC_00a23.vcxproj]

      0 warning
      1 error

  CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
  CMakeLists.txt:17 (project)

-- Configuring incomplete, errors occurred!

PS. Part of the messages in Chinese are removed, please tell me if you need
it as well

Thanks for your help,
Yi-Hong

2016-02-04 3:25 GMT+08:00 Gilles Khouzam <Gilles.Khouzam at microsoft.com>:

> Hi Yi-Hong,
>
>
>
> Can you try to add the following: -DCMAKE_SYSTEM_VERSION=8.1 to your
> parameters?
>
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