我尝试让clang 5.0.0为Visual Studio 2015工作，因为我需要OpenMP 3.0功能。我安装了 clang 编译器（不是没有任何 openmp 支持的 vs2015 版本）并使用 cmake：

cmake_minimum_required(VERSION 2.8.10)
project(myproject)

find_package(OpenMP)
if (OPENMP_FOUND)
    set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
    set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
endif()

include_directories("include")
add_library(libFoo STATIC Foo.cpp)

install(TARGETS Foo libFoo LIBRARY DESTINATION lib ARCHIVE DESTINATION lib)

当我现在尝试使用或不带工具链LLVM-vs2014配置MSVC 14 2015 Win64构建时，我总是收到一个错误，即找不到OpenMP：

The C compiler identification is Clang 5.0.0
The CXX compiler identification is Clang 5.0.0
Check for working C compiler: D:/Program Files/LLVM/msbuild-bin/cl.exe
Check for working C compiler: D:/Program Files/LLVM/msbuild-bin/cl.exe -- works
Detecting C compiler ABI info
Detecting C compiler ABI info - done
Detecting C compile features
Detecting C compile features - done
Check for working CXX compiler: D:/Program Files/LLVM/msbuild-bin/cl.exe
Check for working CXX compiler: D:/Program Files/LLVM/msbuild-bin/cl.exe -- works
Detecting CXX compiler ABI info
Detecting CXX compiler ABI info - done
Detecting CXX compile features
Detecting CXX compile features - done
Could NOT find OpenMP_C (missing: OpenMP_C_FLAGS OpenMP_C_LIB_NAMES) (found version "1.0")
Could NOT find OpenMP_CXX (missing: OpenMP_CXX_FLAGS OpenMP_CXX_LIB_NAMES) (found version "1.0")
Configuring done

使用的编译器似乎是正确的（已安装的 clang，而不是 Microsoft 版本），它会自动检测 clang-cl 二进制文件，但 OpenMP 失败。我尝试使用“指定本机编译器”手动指定编译器并获得相同的结果。它甚至选择了 clang-cl 版本而不是 clang .

相关答案，这不能解决问题：

• 使用 clang-cl 使用 openmp 编译 C 代码 - 最近的 clang 包含 libomp.lib 和 libiomp5.dll