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我已经使用自制软件安装了 Open-MPI，使用 brew install open-mpi。

如果我mpic++ main.cpp在命令行中运行，则代码编译正确。然后我可以使用 mpirun a.out.

现在的问题是，当我在 Clion 中创建 CMakelists.txt 文件时，似乎无法找到 Open-MPI 包：

cmake_minimum_required(VERSION 3.15)
project(project)

set(CMAKE_CXX_STANDARD 17)

set(CMAKE_PREFIX_PATH "/usr/local/Cellar/open-mpi/4.0.2/lib")


find_package(OpenMP REQUIRED)          #FAILS AT THIS LINE

set(LDFLAGS "-L/usr/local/Cellar/open-mpi/4.0.2/lib")
set(CPPFLAGS "-I/usr/local/Cellar/open-mpi/4.0.2/include")

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${GCC_COVERAGE_COMPILE_FLAGS} ${LDFLAGS} ${CPPFLAGS} -fopenmp")

add_executable(project main.cpp)

有人可以提供指导吗？我对如何让它工作感到困惑，并且已经尝试了几个小时。我是 Open-MPI 的新手。

当我尝试构建时它产生的错误：

CMake Error at 

/Applications/CLion.app/Contents/bin/cmake/mac/share/cmake-3.15/Modules/FindPackageHandleStandardArgs.cmake:137 (message):

Could NOT find OpenMP_C (missing: OpenMP_C_FLAGS OpenMP_C_LIB_NAMES) Call Stack (most recent call first):   

/Applications/CLion.app/Contents/bin/cmake/mac/share/cmake-3.15/Modules/FindPackageHandleStandardArgs.cmake:378 (_FPHSA_FAILURE_MESSAGE)   

/Applications/CLion.app/Contents/bin/cmake/mac/share/cmake-3.15/Modules/FindOpenMP.cmake:477 (find_package_handle_standard_args)   CMakeLists.txt:9 (find_package)

谢谢！

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