| cmake_minimum_required(VERSION 3.29) |
| project(cxx_modules_library NONE) |
| |
| find_package(import_std_export_no_std REQUIRED) |
| |
| if (NOT TARGET CXXModules::import_std_export_no_std) |
| message(FATAL_ERROR |
| "Missing imported target") |
| endif () |
| |
| function (check_property expected property) |
| get_property(actual TARGET CXXModules::import_std_export_no_std |
| PROPERTY "${property}") |
| if (NOT DEFINED actual) |
| if (NOT expected STREQUAL "<UNDEF>") |
| message(SEND_ERROR |
| "Mismatch for ${property}:\n expected: ${expected}\n actual: NOT-DEFINED") |
| endif () |
| elseif (NOT actual STREQUAL expected) |
| message(SEND_ERROR |
| "Mismatch for ${property}:\n expected: ${expected}\n actual: ${actual}") |
| endif () |
| endfunction () |
| |
| check_property("<UNDEF>" "IMPORTED_CXX_MODULES_INCLUDE_DIRECTORIES") |
| check_property("<UNDEF>" "IMPORTED_CXX_MODULES_COMPILE_DEFINITIONS") |
| check_property("cxx_std_23" "IMPORTED_CXX_MODULES_COMPILE_FEATURES") |
| check_property("" "IMPORTED_CXX_MODULES_LINK_LIBRARIES") |
| check_property("<UNDEF>" "INTERFACE_LINK_LIBRARIES") |
| check_property("$<BOOL:>" "CXX_MODULE_STD") |
| |
| # Extract the export-dependent targets from the export file. |
| file(STRINGS "${import_std_export_no_std_DIR}/import_std_export_no_std-targets.cmake" usage_dependent_targets |
| REGEX "foreach._target ") |
| # Rudimentary argument splitting. |
| string(REPLACE " " ";" usage_dependent_targets "${usage_dependent_targets}") |
| # Remove exported "target" names. |
| list(FILTER usage_dependent_targets EXCLUDE REGEX "CXXModules::") |
| # Strip quotes. |
| string(REPLACE "\"" "" usage_dependent_targets "${usage_dependent_targets}") |
| |
| if ("__CMAKE::CXX23" IN_LIST usage_dependent_targets) |
| message(SEND_ERROR |
| "The main export requires the '__CMAKE::CXX23' target") |
| endif () |
