Remove an unnecessary transitive dependency of imported CMake target.

Refs #3777

diff --git a/api/gmxapi/CMakeLists.txt b/api/gmxapi/CMakeLists.txt
index b5313c5a8d1240b2d9f57e305a6256634924fa8b..12b2fd4226304f7e2f841b7294aa3edb544dc618 100644 (file)
--- a/api/gmxapi/CMakeLists.txt
+++ b/api/gmxapi/CMakeLists.txt
@@ -69,7 +69,7 @@ if (GMX_LIB_MPI)
     # Ref https://cmake.org/cmake/help/v3.13/module/FindMPI.html#variables-for-using-mpi
     find_package(MPI COMPONENTS C)
     if (MPI_C_FOUND)
-        target_link_libraries(gmxapi PUBLIC MPI::MPI_C)
+        target_link_libraries(gmxapi PRIVATE MPI::MPI_C)
     else()
         message(FATAL_ERROR "Building gmxapi for MPI-enabled GROMACS, but no MPI toolchain found.")
     endif ()