如何编译MPI使用cmake包括C程序 [英] How to compile an MPI included c program using cmake

问题描述

我想申请OpenMP和MPI技术，以一个开放源码的C程序要求cmake的＆安培;＆放大器;使待建。我已经找到在<一个href=\"http://stackoverflow.com/questions/12399422/how-to-set-linker-flags-for-openmp-in-cmakes-try-compile-function\">How设置链接标志中的OpenMP的CMake的try_compile功能的如何包括-fopenmp标志，但仍然感到困惑MPI。我能做些什么呢？

I am trying to apply openmp and mpi techniques to an open source C program which requires "cmake . && make" to be built. I already found at How to set linker flags for OpenMP in CMake's try_compile function how to include the -fopenmp flags but still confused about mpi. What can I do about that?

推荐答案

这是一个关于的OpenMP 的问题？然后，所有你需要做的就是用 -fopenmp 编译您可以通过追加到 CMAKE_C_FLAGS ，例如做：

OpenMP

Is this a question about OpenMP? Then all you have to do is compile with -fopenmp which you can do by appending it to CMAKE_C_FLAGS, for example:

SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fopenmp)

MPI

对于 MPI ，你必须先找到MPI

MPI

For MPI, you have to find mpi first

find_package(MPI) #make it REQUIRED, if you want

然后将其添加的头文件到您的搜索路径

then add it's header files to your search path

include_directories(SYSTEM ${MPI_INCLUDE_PATH})

和最后链接程序（S）（即 my_mpi_target 在我的情况）

and finally link your program(s) (which is my_mpi_target in my case)

 target_link_libraries(my_mpi_target ${MPI_C_LIBRARIES})

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