Windows上的Clang和CMake [英] Clang and CMake on Windows

问题描述

我正在Windows上使用Clang 3.8和CMake 3.7构建C ++项目，但是Clang在 configure 中会发出错误，如下所示。

I am building a C++ project with Clang 3.8 and CMake 3.7 on Windows, but Clang emits an error in configure like below.

    Determining if the CXX compiler works failed with the following output:
    Change Dir: C:/tools/k.build/CMakeFiles/CMakeTmp

    Run Build Command:"C:/tools/ninja.exe" "cmTC_c0004"
    [1/2] Building CXX object CMakeFiles/cmTC_c0004.dir/testCXXCompiler.cxx.obj
    [2/2] Linking CXX executable cmTC_c0004.exe

    FAILED: cmTC_c0004.exe 

    cmd.exe /C "cd . && C:\tools\llvm-3.8.1.build\Release\bin\clang++.exe     CMakeFiles/cmTC_c0004.dir/testCXXCompiler.cxx.obj  -o cmTC_c0004.exe -Wl,--out-implib,libcmTC_c0004.dll.a -Wl,--major-image-version,0,--minor-image-version,0   && cd ."

    LINK : warning LNK4044: unrecognized option '/-out-implib'; ignored
    LINK : warning LNK4044: unrecognized option '/-major-image-version'; ignored
    LINK : warning LNK4044: unrecognized option '/-minor-image-version'; ignored
    LINK : fatal error LNK1181: cannot open input file 'libcmTC_c0004.dll.a'

    clang++.exe: error: linker command failed with exit code 1181 (use -v to see invocation)

    ninja: build stopped: subcommand failed.

奇怪的是，CMakeFiles / CMakeTmp /中没有文件。

Strange thing is that no file exists in CMakeFiles/CMakeTmp/. How can I get it to work?

推荐答案

简而言之，您定义的工具链错误。 CMake认为您使用的MSVC编译器的路径不同。有关详细答案，请参见此问题。请注意，您仍然需要MSVC或Cygwin作为构建环境。

Simply put, you are defining your toolchain wrong. CMake thinks you are using the MSVC compiler with a different path. See this question for a detailed answer. Note that you will still need MSVC or Cygwin as a build environment.

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