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include(RunCMake)
# For `if (IN_LIST)`
cmake_policy(SET CMP0057 NEW)
run_cmake(compiler_introspection)
include("${RunCMake_BINARY_DIR}/compiler_introspection-build/info.cmake")
# Test negative cases where C++20 modules do not work.
run_cmake(NoCXX)
if ("cxx_std_20" IN_LIST CMAKE_CXX_COMPILE_FEATURES)
# This test requires that the compiler be told to compile in an older-than-20
# standard. If the compiler forces a standard to be used, skip it.
if (NOT forced_cxx_standard)
run_cmake(NoCXX20)
endif ()
# This test uses C++20, but another prerequisite is missing, so forced
# standards don't matter.
run_cmake(NoCXX20ModuleFlag)
endif ()
if (RunCMake_GENERATOR MATCHES "Ninja")
execute_process(
COMMAND "${CMAKE_MAKE_PROGRAM}" --version
RESULT_VARIABLE res
OUTPUT_VARIABLE ninja_version
ERROR_VARIABLE err
OUTPUT_STRIP_TRAILING_WHITESPACE
ERROR_STRIP_TRAILING_WHITESPACE)
if (res)
message(WARNING
"Failed to determine `ninja` version: ${err}")
set(ninja_version "0")
endif ()
endif ()
# Test behavior when the generator does not support C++20 modules.
if (NOT RunCMake_GENERATOR MATCHES "Ninja" OR
ninja_version VERSION_LESS "1.10" OR
NOT "cxx_std_20" IN_LIST CMAKE_CXX_COMPILE_FEATURES)
if ("cxx_std_20" IN_LIST CMAKE_CXX_COMPILE_FEATURES)
run_cmake(NoDyndepSupport)
endif ()
# Bail; the remaining tests require the generator to successfully generate
# with C++20 modules in the source list.
return ()
endif ()
set(fileset_types
Modules
ModuleHeaderUnits)
set(scopes
Interface
Private
Public)
foreach (fileset_type IN LISTS fileset_types)
foreach (scope IN LISTS scopes)
run_cmake("FileSet${fileset_type}${scope}")
endforeach ()
# Test the error message when a non-C++ source file is found in the source
# list.
run_cmake("NotCXXSource${fileset_type}")
endforeach ()
# Actual compilation tests.
if (NOT CMake_TEST_MODULE_COMPILATION)
return ()
endif ()
function (run_cxx_module_test directory)
set(test_name "${directory}")
if (NOT ARGN STREQUAL "")
list(POP_FRONT ARGN test_name)
endif ()
set(RunCMake_TEST_SOURCE_DIR "${CMAKE_CURRENT_LIST_DIR}/examples/${directory}")
set(RunCMake_TEST_BINARY_DIR "${RunCMake_BINARY_DIR}/examples/${test_name}-build")
if (RunCMake_GENERATOR_IS_MULTI_CONFIG)
set(RunCMake_TEST_OPTIONS -DCMAKE_CONFIGURATION_TYPES=Debug)
else ()
set(RunCMake_TEST_OPTIONS -DCMAKE_BUILD_TYPE=Debug)
endif ()
set(RunCMake_TEST_OPTIONS
"-DCMake_TEST_MODULE_COMPILATION_RULES=${CMake_TEST_MODULE_COMPILATION_RULES}"
${ARGN})
run_cmake("examples/${test_name}")
set(RunCMake_TEST_NO_CLEAN 1)
run_cmake_command("${test_name}-build" "${CMAKE_COMMAND}" --build . --config Debug)
run_cmake_command("${test_name}-test" "${CMAKE_CTEST_COMMAND}" -C Debug)
endfunction ()
string(REPLACE "," ";" CMake_TEST_MODULE_COMPILATION "${CMake_TEST_MODULE_COMPILATION}")
# Tests which use named modules.
if ("named" IN_LIST CMake_TEST_MODULE_COMPILATION)
run_cxx_module_test(simple)
run_cxx_module_test(library library-static -DBUILD_SHARED_LIBS=OFF)
run_cxx_module_test(generated)
endif ()
# Tests which use named modules in shared libraries.
if ("shared" IN_LIST CMake_TEST_MODULE_COMPILATION)
run_cxx_module_test(library library-shared -DBUILD_SHARED_LIBS=ON)
endif ()
# Tests which use partitions.
if ("partitions" IN_LIST CMake_TEST_MODULE_COMPILATION)
run_cxx_module_test(partitions)
endif ()
# Tests which use internal partitions.
if ("internal_partitions" IN_LIST CMake_TEST_MODULE_COMPILATION)
run_cxx_module_test(internal-partitions)
endif ()
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