test: simplify and correct Python

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.19...3.28)
+cmake_minimum_required(VERSION 3.20...3.30)
 
 if(CMAKE_SOURCE_DIR STREQUAL CMAKE_BINARY_DIR)
   message(FATAL_ERROR "please use out-of-source build
@@ -16,15 +16,12 @@ VERSION 2.1.0
 )
 
 include(CTest)
-if(NOT DEFINED ${PROJECT_NAME}_BUILD_TESTING)
-  set(${PROJECT_NAME}_BUILD_TESTING ${BUILD_TESTING})
-endif()
 
-if(benchmark)
-  set(${PROJECT_NAME}_BUILD_TESTING true)
-endif()
+include(options.cmake)
 
 if(${PROJECT_NAME}_BUILD_TESTING)
+  find_package(Python COMPONENTS Interpreter)
+
   enable_language(CXX)
 endif()
 
@@ -39,7 +36,6 @@ if(DEFINED ENV{CONDA_PREFIX})
   # despite CMAKE_IGNORE_PREFIX_PATH
 endif()
 
-include(options.cmake)
 include(cmake/compilers.cmake)
 
 # if HDF5-MPI, ensure all the pieces are working together at configure time.

benchmark/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.14...3.24)
+cmake_minimum_required(VERSION 3.21...3.30)
 
 project(h5mpi-benchmark
 LANGUAGES C CXX Fortran
@@ -10,14 +10,9 @@ set_property(DIRECTORY PROPERTY LABELS benchmark)
 
 file(GENERATE OUTPUT .gitignore CONTENT "*")
 
-if(CMAKE_VERSION VERSION_LESS 3.21)
-  get_property(not_top DIRECTORY PROPERTY PARENT_DIRECTORY)
-  if(NOT not_top)
-    set(PROJECT_IS_TOP_LEVEL true)
-  endif()
-endif()
-
 if(PROJECT_IS_TOP_LEVEL)
+  find_package(Python COMPONENTS Interpreter)
+
   find_package(h5fortran CONFIG REQUIRED)
 
   add_library(cpu_count OBJECT ${PROJECT_SOURCE_DIR}/../test/cpu_count.cpp)

benchmark/test/CMakeLists.txt

@@ -16,13 +16,9 @@ target_link_libraries(slab_serial_write PRIVATE cli perf test_utils kernel h5for
 add_executable(slab_serial_read slab_serial_read.f90)
 target_link_libraries(slab_serial_read PRIVATE cli perf h5fortran::h5fortran)
 
-if(CMAKE_VERSION VERSION_LESS 3.20)
-  get_filename_component(HDF5_LIBRARY_DIR ${HDF5_C_LIBRARY} DIRECTORY)
-  get_filename_component(HDF5_DIR ${HDF5_LIBRARY_DIR} DIRECTORY)
-else()
-  cmake_path(GET HDF5_C_LIBRARY PARENT_PATH HDF5_LIBRARY_DIR)
-  cmake_path(GET HDF5_LIBRARY_DIR PARENT_PATH HDF5_DIR)
-endif()
+cmake_path(GET HDF5_C_LIBRARY PARENT_PATH HDF5_LIBRARY_DIR)
+cmake_path(GET HDF5_LIBRARY_DIR PARENT_PATH HDF5_DIR)
+
 find_program(H5DIFF
 NAMES h5diff
 HINTS ${HDF5_ROOT} ${HDF5_DIR}
@@ -138,19 +134,14 @@ foreach(comp_lvl 0 1)
   set_property(TEST mpi-cleanup-comp${comp_lvl} PROPERTY TIMEOUT ${read_timeout})
 endforeach()
 
-if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.12)
-  set(Python_FIND_REGISTRY LAST)
-  find_package(Python COMPONENTS Interpreter)
-
-  if(NOT DEFINED PyOK)
-    execute_process(COMMAND ${Python_EXECUTABLE} -c "import h5py,numpy,pandas,matplotlib"
-    RESULT_VARIABLE ret
-    )
-    if(ret EQUAL 0)
-      set(PyOK true CACHE BOOL "Python ready")
-    else()
-      set(PyOK false CACHE BOOL "python not ready")
-    endif()
+if(Python_Interpreter_FOUND AND NOT DEFINED PyOK)
+  execute_process(COMMAND ${Python_EXECUTABLE} -c "import h5py,numpy,pandas,matplotlib"
+  RESULT_VARIABLE ret
+  )
+  if(ret EQUAL 0)
+    set(PyOK true CACHE BOOL "Python ready")
+  else()
+    set(PyOK false CACHE BOOL "python not ready")
   endif()
 endif()
 

cmake/ExtProj.cmake

@@ -4,10 +4,6 @@ include_guard()
 
 include(ExternalProject)
 
-if(CMAKE_VERSION VERSION_LESS 3.19)
-  message(FATAL_ERROR "CMake >= 3.19 required to use JSON")
-endif()
-
 file(READ ${CMAKE_CURRENT_LIST_DIR}/libraries.json json)
 
 

cmake/hdf5_compression.cmake

@@ -85,11 +85,8 @@ end program
 
 set(CMAKE_REQUIRED_LIBRARIES HDF5::HDF5 MPI::MPI_Fortran MPI::MPI_C)
 
-if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.14)
-  # need this if() for parser
-  include(CheckFortranSourceRuns)
-  check_fortran_source_runs(${src} hdf5_parallel_compression_run)
-endif()
+include(CheckSourceRuns)
+check_source_runs(Fortran ${src} hdf5_parallel_compression_run)
 
 if(hdf5_parallel_compression_run)
   message(CHECK_PASS "${CMAKE_MATCH_1}")
@@ -108,13 +105,8 @@ if(DEFINED CACHE{hdf5_parallel_compression})
   return()
 endif()
 
-if(CMAKE_VERSION VERSION_LESS 3.20)
-  get_filename_component(HDF5_LIBRARY_DIR ${HDF5_C_LIBRARY} DIRECTORY)
-  get_filename_component(HDF5_DIR ${HDF5_LIBRARY_DIR} DIRECTORY)
-else()
-  cmake_path(GET HDF5_C_LIBRARY PARENT_PATH HDF5_LIBRARY_DIR)
-  cmake_path(GET HDF5_LIBRARY_DIR PARENT_PATH HDF5_DIR)
-endif()
+cmake_path(GET HDF5_C_LIBRARY PARENT_PATH HDF5_LIBRARY_DIR)
+cmake_path(GET HDF5_LIBRARY_DIR PARENT_PATH HDF5_DIR)
 
 message(CHECK_START "Checking if HDF5 configured for parallel compression")
 
@@ -147,13 +139,7 @@ file(READ ${hdf5_settings_file} hdf5_settings)
 string(REGEX MATCH "Parallel Filtered Dataset Writes:[ ]*([a-zA-Z]+)" hdf5_parallel_compression_match ${hdf5_settings})
 
 if(${CMAKE_MATCH_1})
-
-  if(CMAKE_VERSION VERSION_LESS 3.14)
-    check_compression()
-  else()
-    set(hdf5_parallel_compression .true. CACHE STRING "HDF5-MPI configured for parallel compression (assumed due to CMake < 3.14)")
-  endif()
-
+  check_compression()
 else()
   message(CHECK_FAIL "NO")
   set(hdf5_parallel_compression .false. CACHE STRING "HDF5-MPI does not have parallel compression")

options.cmake

@@ -3,6 +3,12 @@ message(STATUS "${PROJECT_NAME} ${PROJECT_VERSION}  CMake ${CMAKE_VERSION}")
 option(find_hdf5 "search for HDF5 and Zlib" true)
 
 option(benchmark "Run benchmarks")
+
+option(${PROJECT_NAME}_BUILD_TESTING "Build tests" ${PROJECT_IS_TOP_LEVEL})
+if(benchmark)
+  set(${PROJECT_NAME}_BUILD_TESTING true)
+endif()
+
 option(coverage "Code coverage tests")
 option(tidy "Run clang-tidy on the code")
 

test/CMakeLists.txt

@@ -8,11 +8,7 @@ target_compile_definitions(cpu_count PRIVATE $<$<BOOL:${MSVC}>:_CRT_SECURE_NO_WA
 target_include_directories(cpu_count PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
 
 # --- Python h5py
-if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.12)
-
-set(Python_FIND_REGISTRY LAST)
-find_package(Python COMPONENTS Interpreter)
-if(NOT DEFINED h5py_ok)
+if(Python_Interpreter_FOUND AND NOT DEFINED h5py_ok)
   execute_process(COMMAND ${Python_EXECUTABLE} -c "import h5py"
   RESULT_VARIABLE h5py_code
   ERROR_VARIABLE err
@@ -22,20 +18,20 @@ if(NOT DEFINED h5py_ok)
     set(h5py_ok true CACHE BOOL "h5py OK")
   else()
     set(h5py_ok false CACHE BOOL "h5py not OK")
-    message(VERBOSE "${err}")
+    message(VERBOSE "${Python_EXECUTABLE}: ${err}")
   endif()
 endif()
 
-endif()
-
 set(string_file ${CMAKE_CURRENT_BINARY_DIR}/test_string_py.h5)
 
 add_test(NAME PythonString
-COMMAND ${Python_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test_string.py ${string_file}
+COMMAND Python::Interpreter ${CMAKE_CURRENT_SOURCE_DIR}/test_string.py ${string_file}
 )
 
-set_property(TEST PythonString PROPERTY FIXTURES_SETUP h5str)
-set_property(TEST PythonString PROPERTY DISABLED $<NOT:$<BOOL:${h5py_ok}>>)
+set_tests_properties(PythonString PROPERTIES
+FIXTURES_SETUP h5str
+DISABLED $<NOT:$<BOOL:${h5py_ok}>>
+)
 
 # --- test subdirs
 

test/mpi/CMakeLists.txt

@@ -2,9 +2,7 @@ set_property(DIRECTORY PROPERTY LABELS mpi)
 
 # --- helper functions
 
-function(mpi_test names use_runner)
-
-foreach(name IN LISTS names)
+function(mpi_test name use_runner)
 
 set(tname "${name}_mpi")
 
@@ -25,8 +23,6 @@ endif()
 
 add_test(NAME ${tname} COMMAND ${cmd})
 
-endforeach()
-
 endfunction(mpi_test)
 
 # --- test files
@@ -52,33 +48,45 @@ fill groups layout shape
 string string_read write
 )
 
-mpi_test("${mpi_tests}" false)
+foreach(t IN LISTS mpi_tests)
+  mpi_test(${t} false)
+endforeach()
 
 set(runner_tests deflate_write deflate_props deflate_read)
 
-mpi_test("${runner_tests}" true)
+foreach(t IN LISTS runner_tests)
+  mpi_test(${t} true)
+endforeach()
 
 # --- test dependencies
 
 set_property(TEST write_mpi PROPERTY FIXTURES_SETUP test_files)
 
-set_property(TEST layout_mpi shape_mpi PROPERTY FIXTURES_REQUIRED test_files)
-set_property(TEST layout_mpi shape_mpi PROPERTY REQUIRED_FILES "${CMAKE_CURRENT_BINARY_DIR}/test_write.h5;${CMAKE_CURRENT_BINARY_DIR}/test_layout.h5")
+set_tests_properties(layout_mpi shape_mpi PROPERTIES
+FIXTURES_REQUIRED test_files
+REQUIRED_FILES "${CMAKE_CURRENT_BINARY_DIR}/test_write.h5;${CMAKE_CURRENT_BINARY_DIR}/test_layout.h5"
+)
 
 set_property(TEST deflate_write_mpi PROPERTY FIXTURES_SETUP deflate_files_mpi)
 
-set_property(TEST deflate_props_mpi deflate_read_mpi PROPERTY FIXTURES_REQUIRED deflate_files_mpi)
-set_property(TEST deflate_props_mpi deflate_read_mpi PROPERTY REQUIRED_FILES ${CMAKE_CURRENT_BINARY_DIR}/deflate1.h5)
+set_tests_properties(deflate_props_mpi deflate_read_mpi PROPERTIES
+FIXTURES_REQUIRED deflate_files_mpi
+REQUIRED_FILES ${CMAKE_CURRENT_BINARY_DIR}/deflate1.h5
+)
 
-set_property(TEST string_read_mpi PROPERTY FIXTURES_REQUIRED h5str)
-set_property(TEST string_read_mpi PROPERTY DISABLED $<NOT:$<BOOL:${h5py_ok}>>)
+set_tests_properties(string_read_mpi PROPERTIES
+FIXTURES_REQUIRED h5str
+DISABLED $<NOT:$<BOOL:${h5py_ok}>>
+)
 
 # --- test properties
 
 get_property(test_names DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY TESTS)
 
-set_property(TEST ${test_names} PROPERTY WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-set_property(TEST ${test_names} PROPERTY RESOURCE_LOCK cpu_mpi)
+set_tests_properties(${test_names} PROPERTIES
+WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+RESOURCE_LOCK cpu_mpi
+)
 
 # --- Windows shared DLLs
 if(WIN32 AND CMAKE_VERSION VERSION_GREATER_EQUAL 3.22)

test/nompi/CMakeLists.txt

@@ -1,8 +1,6 @@
 set_property(DIRECTORY PROPERTY LABELS nompi)
 
-function(nompi_test names)
-
-foreach(name IN LISTS names)
+function(nompi_test name)
 
 add_executable(test_${name} test_${name}.f90)
 target_link_libraries(test_${name} PRIVATE h5fortran::h5fortran)
@@ -15,8 +13,6 @@ else()
   add_test(NAME ${name} COMMAND test_${name})
 endif()
 
-endforeach()
-
 endfunction(nompi_test)
 
 
@@ -25,7 +21,9 @@ exist fill groups layout
 shape string string_read write
 )
 
-nompi_test("${nompi_tests}")
+foreach(t IN LISTS nompi_tests)
+  nompi_test(${t})
+endforeach()
 
 # --- test dependencies
 
@@ -39,6 +37,11 @@ set_property(TEST deflate_write PROPERTY FIXTURES_SETUP deflate_files)
 set_property(TEST deflate_props deflate_read PROPERTY FIXTURES_REQUIRED deflate_files)
 set_property(TEST deflate_props deflate_read PROPERTY REQUIRED_FILES ${CMAKE_CURRENT_BINARY_DIR}/deflate1.h5)
 
+set_tests_properties(string_read PROPERTIES
+FIXTURES_REQUIRED h5str
+DISABLED $<NOT:$<BOOL:${h5py_ok}>>
+)
+
 # --- test properties
 
 get_property(test_names DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY TESTS)
@@ -51,33 +54,3 @@ set_property(TEST ${test_names} PROPERTY
 ENVIRONMENT_MODIFICATION "PATH=path_list_append:${ZLIB_INCLUDE_DIRS}/../bin;PATH=path_list_append:${ZLIB_INCLUDE_DIR}/../bin"
 )
 endif()
-
-# --- Python h5py
-if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.12)
-  set(Python_FIND_VIRTUALENV STANDARD)
-  # use order in PATH to pick Python interpreter
-  # this avoids unexpected old system Python getting used IF conda environment has been activated
-  find_package(Python COMPONENTS Interpreter)
-endif()
-if(NOT DEFINED h5py_ok)
-  execute_process(COMMAND ${Python_EXECUTABLE} -c "import h5py"
-  RESULT_VARIABLE h5py_code
-  )
-  if(h5py_code EQUAL 0)
-    set(h5py_ok true CACHE BOOL "h5py OK")
-  else()
-    set(h5py_ok false CACHE BOOL "h5py not OK")
-  endif()
-endif()
-
-set_property(TEST string_read PROPERTY FIXTURES_REQUIRED h5str)
-set_property(TEST string_read PROPERTY REQUIRED_FILES ${string_file})
-
-# --- String
-add_test(NAME PythonString
-COMMAND ${Python_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/test_string.py ${string_file}
-)
-
-set_property(TEST PythonString PROPERTY FIXTURES_SETUP h5str)
-
-set_property(TEST string_read PythonString PROPERTY DISABLED $<NOT:$<BOOL:${h5py_ok}>>)