CMake、"IMPORTED"库和查找脚本

Question

我试图将MPI包含在项目中，并将其添加为我的CMAKE项目中的导入库。这是我的代码：

find_package(MPI REQUIRED)
add_library(MPI SHARED IMPORTED)
set_property(TARGET MPI PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${MPI_INCLUDE_PATH})
set_property(TARGET MPI PROPERTY IMPORTED_LOCATION ${MPI_CXX_LIBRARIES})

这给我以下错误：

clang: error: no such file or directory: '/usr/local/Cellar/open-mpi/1.10.2_1/lib/libmpi_cxx.dylib;/usr/local/Cellar/open-mpi/1.10.2_1/lib/libmpi.dylib'

我相信这是因为IMPORTED_LOCATION只是一个文件，而不是FindMPI.cmake返回的文件。有什么想法如何解决？

Answer 1

使用列表中的第一个元素作为 imported_location 属性，将其他元素用作 interface_link_libraries 属性：属性：

find_package(MPI REQUIRED)
add_library(MPI SHARED IMPORTED)
set_property(TARGET MPI PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${MPI_INCLUDE_PATH})
# Copy list for prevent its from modification.
set(other_elems ${MPI_CXX_LIBRARIES})
list(GET other_elems 0 first_elem)
list(REMOVE_AT other_elems 0)
set_property(TARGET MPI PROPERTY IMPORTED_LOCATION ${first_elem})
set_property(TARGET MPI PROPERTY INTERFACE_LINK_LIBRARIES ${other_elems})