[rabit] Drop support for MPI backend. (#9525)

- Add checks in cmake. - Remove mpi related code.
2023-08-28 21:01:22 +08:00
parent c3574d932f
commit 90ef250ea1
4 changed files with 21 additions and 179 deletions
--- a/cmake/Utils.cmake
+++ b/cmake/Utils.cmake
@@ -295,10 +295,6 @@ macro(xgboost_target_link_libraries target)
    target_link_libraries(${target} PRIVATE CUDA::nvToolsExt)
  endif (USE_NVTX)

-  if (RABIT_BUILD_MPI)
-    target_link_libraries(${target} PRIVATE MPI::MPI_CXX)
-  endif (RABIT_BUILD_MPI)
-
  if (MINGW)
    target_link_libraries(${target} PRIVATE wsock32 ws2_32)
  endif (MINGW)