解决 CMake 报错：找不到 MPI_Fortran、MPI 和 Trilinos 库

在编译 svFSI 时，你可能会遇到以下 CMake 错误：

报错 -- Could NOT find MPI_Fortran (missing: MPI_Fortran_WORKS)
-- Could NOT find MPI (missing: MPI_Fortran_FOUND) (found version '3.1')
--     ThreeDSolver Components
--         svFSILS
--         svFSI
CMake Warning at Source/svFSI/CMakeLists.txt:60 (FIND_PACKAGE):
  By not providing 'FindTrilinos.cmake' in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by 'Trilinos',
  but CMake did not find one.

  Could not find a package configuration file provided by 'Trilinos' with any
  of the following names:

    TrilinosConfig.cmake
    trilinos-config.cmake

  Add the installation prefix of 'Trilinos' to CMAKE_PREFIX_PATH or set
  'Trilinos_DIR' to a directory containing one of the above files.  If
  'Trilinos' provides a separate development package or SDK, be sure it has
  been installed.


CMake Warning at Source/svFSI/CMakeLists.txt:97 (MESSAGE):
  Could not find Trilinos.  Compiling svFSI without Trilinos.


-- Generating svFSI scripts. Dev name: mysvfsi, install name:  svfsi
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
MPI_LIBRARY
    linked by target '_simvascular_svfsils' in directory /opt/svFSI/Code/Source/svFSILS

-- Configuring incomplete, errors occurred!
See also '/opt/svFSI/Build/svFSI-build/CMakeFiles/CMakeOutput.log'.
See also '/opt/svFSI/Build/svFSI-build/CMakeFiles/CMakeError.log'.
make[2]: *** [CMakeFiles/svFSI.dir/build.make:108: svFSI-prefix/src/svFSI-stamp/svFSI-configure] Error 1
make[2]: Leaving directory '/opt/svFSI/Build'
make[1]: *** [CMakeFiles/Makefile2:78: CMakeFiles/svFSI.dir/all] Error 2
make[1]: Leaving directory '/opt/svFSI/Build'
make: *** [Makefile:84: all] Error 2

这些错误表明 CMake 找不到 MPI_Fortran、MPI 和 Trilinos 库。

解决方法

以下是解决这些错误的步骤：

安装 MPI 和 MPI_Fortran 确保你的系统上安装了 MPI 和 MPI_Fortran 库，并且已正确设置路径。你可以使用包管理器安装它们，例如：

sudo apt-get install openmpi-bin libopenmpi-dev


2. **安装 Trilinos (如果需要)**
如果你的项目需要 Trilinos 库，请安装它并将安装路径添加到 `CMAKE_PREFIX_PATH` 环境变量中，或者设置 `Trilinos_DIR` CMake 变量为包含 `TrilinosConfig.cmake` 文件的目录。例如：

```bash
export CMAKE_PREFIX_PATH=$CMAKE_PREFIX_PATH:/path/to/trilinos/install

设置 MPI_LIBRARY 变量 确保 CMakeLists.txt 文件中正确设置了 MPI_LIBRARY 变量。它应该指向 MPI 库文件的路径。

完成这些步骤后，重新运行 CMake 并尝试构建你的项目。

解决 CMake 报错：找不到 MPI_Fortran、MPI 和 Trilinos 库