Use variables instead of hard-coded mpirun -np (doctest#689)

CMake's `FindMPI` module sets `MPIEXEC_EXECUTABLE` and `MPIEXEC_NUMPROC_FLAG`. We use them so it works for different MPI implementations.
Shiffted · Feb 27, 2023 · 0a8a06e · 0a8a06e
1 parent 8abfc84
commit 0a8a06e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/examples/mpi/CMakeLists.txt b/examples/mpi/CMakeLists.txt
@@ -3,5 +3,5 @@ if(MPI_FOUND)
     add_executable(test_mpi main.cpp mpi.cpp)
     target_link_libraries(test_mpi doctest ${CMAKE_THREAD_LIBS_INIT} MPI::MPI_CXX)
 
-    doctest_add_test(NO_OUTPUT NAME test_mpi COMMAND mpirun -np 3 $<TARGET_FILE:test_mpi>)
+    doctest_add_test(NO_OUTPUT NAME test_mpi COMMAND ${MPIEXEC_EXECUTABLE} ${MPIEXEC_NUMPROC_FLAG} 3 $<TARGET_FILE:test_mpi>)
 endif()