use TEST_LAUNCHER for CMake 3.29+

CMakeLists.txt

@@ -8,6 +8,6 @@ enable_testing()
 
 include(cmake/compilers.cmake)
 
-add_subdirectory(src)
+add_subdirectory(test)
 
 file(GENERATE OUTPUT .gitignore CONTENT "*")

meson.build

@@ -18,4 +18,4 @@ endif
 
 mpiexec = find_program('mpiexec', required : false, disabler: true)  # MS-MPI has only mpiexec
 
-subdir('src')
+subdir('test')

test/CMakeLists.txt

@@ -0,0 +1,62 @@
+add_executable(mpi_basic_C basic.c)
+target_link_libraries(mpi_basic_C PRIVATE MPI::MPI_C)
+add_test(NAME mpi_basic_C COMMAND mpi_basic_C)
+
+add_executable(mpi_version_C mpivers.c)
+target_link_libraries(mpi_version_C PRIVATE MPI::MPI_C)
+add_test(NAME mpi_version_C COMMAND mpi_version_C)
+
+# --- Fortran MPI-3
+
+add_executable(mpi_basic_Fortran basic.f90)
+target_link_libraries(mpi_basic_Fortran PRIVATE MPI::MPI_Fortran)
+add_test(NAME mpi_basic_Fortran COMMAND mpi_basic_Fortran)
+
+add_executable(mpi_version_Fortran mpivers.f90)
+target_link_libraries(mpi_version_Fortran PRIVATE MPI::MPI_Fortran)
+add_test(NAME mpi_version_Fortran COMMAND mpi_version_Fortran)
+
+# --- more than one MPI image
+
+add_executable(mpi_hello helloworld.f90)
+target_link_libraries(mpi_hello PRIVATE MPI::MPI_Fortran)
+add_test(NAME mpi_hello COMMAND mpi_hello)
+set_property(TEST mpi_hello PROPERTY FIXTURES_SETUP mpi_fxt)
+
+# --- actual message passing
+
+add_executable(mpi_pass thread_pass.f90)
+target_link_libraries(mpi_pass PRIVATE MPI::MPI_Fortran)
+
+if(MPIEXEC_MAX_NUMPROCS GREATER_EQUAL 2)
+
+add_test(NAME mpi_pass COMMAND mpi_pass)
+set_property(TEST mpi_pass PROPERTY FIXTURES_REQUIRED mpi_fxt)
+
+endif()
+
+
+get_property(tests DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY TESTS)
+set_property(TEST ${tests} PROPERTY cpu_mpi)
+
+# convenience vars
+set(single mpi_basic_C mpi_version_C mpi_basic_Fortran mpi_version_Fortran)
+set(_m ${MPIEXEC_EXECUTABLE} ${MPIEXEC_NUMPROC_FLAG})
+
+if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.29)
+
+set_property(TEST ${single} PROPERTY TEST_LAUNCHER ${_m} 1)
+set_property(TEST mpi_hello PROPERTY TEST_LAUNCHER ${_m} ${MPIEXEC_MAX_NUMPROCS})
+set_property(TEST mpi_pass PROPERTY TEST_LAUNCHER ${_m} 2)
+
+else()
+
+set_property(TARGET ${single} PROPERTY CROSSCOMPILING_EMULATOR ${_m} 1)
+set_property(TARGET mpi_hello PROPERTY CROSSCOMPILING_EMULATOR ${_m} ${MPIEXEC_MAX_NUMPROCS})
+set_property(TARGET mpi_pass PROPERTY CROSSCOMPILING_EMULATOR ${_m} 2)
+
+endif()
+
+if(DEFINED mpi_tmpdir)
+  set_property(TEST ${tests} PROPERTY ENVIRONMENT TMPDIR=${mpi_tmpdir})
+endif()