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首页 > 解决方案 > （Cmake，Trilinos）clang：错误：不支持的选项'-fopenmp'

cmake - （Cmake，Trilinos）clang：错误：不支持的选项'-fopenmp'

问题描述

平台：macOS 11.1

当我尝试配置 Trilinos 时，我遇到了一个问题，我无法处理它。以下命令用于编译 Trilinos：

#!/bin/bash
rm -rf CMakeCache.txt
rm -rf CMakeFiles
rm -rf CMakeCache.txt

cmake \
  -D CMAKE_INSTALL_PREFIX:PATH=/Users/weiqiangguo/Downloads/Trilinos/build \
  -D CMAKE_BUILD_TYPE=Release \
  -D BUILD_SHARED_LIBS:BOOL=ON \
  \
  -D TPL_ENABLE_MPI:BOOL=ON \
  -D TPL_ENABLE_BLAS:BOOL=ON \
  -D TPL_ENABLE_LAPACK:BOOL=ON \
  -D TPL_ENABLE_Pthread:BOOL=ON \
  -D TPL_ENABLE_HWLOC:BOOL=ON \
  -D TPL_ENABLE_HDF5:BOOL=ON \
  -D TPL_ENABLE_SCALAPACK:BOOL=ON \
  -D TPL_ENABLE_SuperLU:BOOL=ON \
  -D TPL_ENABLE_SuperLUDist:BOOL=ON \
  -D TPL_ENABLE_METIS:BOOL=ON \
  -D TPL_ENABLE_ParMETIS:BOOL=ON \
  \
  -D ML_ENABLE_SuperLU:BOOL=OFF \
  \
  -D CMAKE_C_COMPILER:STRING="mpicc" \
  -D CMAKE_CXX_COMPILER:FILEPATH=/usr/local/bin/mpicxx \
  -D CMAKE_Fortran_COMPILER:STRING="mpif90" \
  -D CMAKE_CXX_FLAGS:STRING="-O3 -g -fopenmp" \
  \
  -D TPL_SCALAPACK_LIBRARIES='/usr/local/lib/libscalapack.dylib' \
  \
  -D Teuchos_ENABLE_COMPLEX=ON \
  \
  -D Trilinos_ENABLE_ALL_PACKAGES:BOOL=OFF \
  -D Trilinos_ENABLE_ALL_OPTIONAL_PACKAGES:BOOL=OFF \
  -D Trilinos_ENABLE_ML:BOOL=ON \
  -D Trilinos_ENABLE_Belos:BOOL=ON \
  -D Trilinos_ENABLE_Epetra:BOOL=ON \
  -D Trilinos_ENABLE_EpetraExt:BOOL=ON \
  -D Trilinos_ENABLE_Ifpack:BOOL=ON \
  -D Trilinos_ENABLE_Amesos:BOOL=ON \
  -D Trilinos_ENABLE_Anasazi:BOOL=ON \
  -D Trilinos_ENABLE_NOX:BOOL=ON \
  -D Trilinos_ENABLE_Teko:BOOL=ON \
  -D Trilinos_ENABLE_Galeri:BOOL=ON \
  -D Trilinos_ENABLE_OpenMP:BOOL=OFF \
  -D Trilinos_ENABLE_PyTrilinos:BOOL=ON \
  \
  -D MPI_BASE_DIR:FILEPATH="/usr/local/Cellar/open-mpi" \
  -D PYTHON_EXECUTABLE:FILEPATH="/usr/bin/python3" \
  -D SuperLU_LIBRARY_DIRS:FILEPATH="/usr/local/lib" \
  -D SuperLU_INCLUDE_DIRS:FILEPATH="/usr/local/include" \
  -D SuperLUDist_LIBRARY_DIRS:FILEPATH="/usr/local/lib" \
  -D SuperLUDist_INCLUDE_DIRS:FILEPATH="/usr/local/include" \
  ../

错误信息如下所示：

Probing the environment ...

-- USE_XSDK_DEFAULTS='FALSE'
-- BUILD_SHARED_LIBS='ON'
-- CMAKE_BUILD_TYPE='Release'
-- MPI_BASE_DIR='/usr/local/Cellar/open-mpi'
-- MPI_BIN_DIR='/usr/local/Cellar/open-mpi/bin'
-- MPI_USE_COMPILER_WRAPPERS='ON'
-- Leaving current CMAKE_C_COMPILER=mpicc since it is already set!
-- Leaving current CMAKE_CXX_COMPILER=/usr/local/bin/mpicxx since it is already set!
-- Leaving current CMAKE_Fortran_COMPILER=mpif90 since it is already set!
-- MPI_EXEC='/usr/local/bin/mpiexec'
-- The C compiler identification is AppleClang 12.0.0.12000032
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/local/bin/mpicc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- CMAKE_C_COMPILER_ID='AppleClang'
-- CMAKE_C_COMPILER_VERSION='12.0.0.12000032'
-- The CXX compiler identification is AppleClang 12.0.0.12000032
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - failed
-- Check for working CXX compiler: /usr/local/bin/mpicxx
-- Check for working CXX compiler: /usr/local/bin/mpicxx - broken
CMake Error at /Applications/CMake.app/Contents/share/cmake-3.20/Modules/CMakeTestCXXCompiler.cmake:59 (message):
  The C++ compiler

    "/usr/local/bin/mpicxx"

  is not able to compile a simple test program.

  It fails with the following output:

    Change Dir: /Users/weiqiangguo/Downloads/Trilinos/build/CMakeFiles/CMakeTmp
    
    Run Build Command(s):/usr/bin/make -f Makefile cmTC_690b0/fast && /Library/Developer/CommandLineTools/usr/bin/make  -f CMakeFiles/cmTC_690b0.dir/build.make CMakeFiles/cmTC_690b0.dir/build
    Building CXX object CMakeFiles/cmTC_690b0.dir/testCXXCompiler.cxx.o
    /usr/local/bin/mpicxx   -O3 -g -fopenmp  -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX11.1.sdk -std=gnu++14 -MD -MT CMakeFiles/cmTC_690b0.dir/testCXXCompiler.cxx.o -MF CMakeFiles/cmTC_690b0.dir/testCXXCompiler.cxx.o.d -o CMakeFiles/cmTC_690b0.dir/testCXXCompiler.cxx.o -c /Users/weiqiangguo/Downloads/Trilinos/build/CMakeFiles/CMakeTmp/testCXXCompiler.cxx
    clang: error: unsupported option '-fopenmp'
    make[1]: *** [CMakeFiles/cmTC_690b0.dir/testCXXCompiler.cxx.o] Error 1
    make: *** [cmTC_690b0/fast] Error 2
    
    

  

  CMake will not be able to correctly generate this project.

我真的不知道如何解决它。我还尝试将 gcc 编译器设置为自制 gcc 而不是 clang。

谁能帮我解决这个问题？

标签： cmaketrilinos

解决方案

Xcode 工具链不支持 OpenMP。除了他们希望您使用 Apple 特定的 API（显然不等效）之外，没有其他技术原因。

要使用 OpenMP，您可以使用应该能够通过 Homebrew 安装的LLVM Clang/libc++/libopenmp ：

brew install --with-toolchain llvm

或自己从源代码构建。

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