diff options
Diffstat (limited to 'cmake/QtFeature.cmake')
| -rw-r--r-- | cmake/QtFeature.cmake | 760 |
1 files changed, 760 insertions, 0 deletions
diff --git a/cmake/QtFeature.cmake b/cmake/QtFeature.cmake new file mode 100644 index 0000000000..faca42635c --- /dev/null +++ b/cmake/QtFeature.cmake @@ -0,0 +1,760 @@ +function(qt_feature_module_begin) + qt_parse_all_arguments(arg "qt_feature_module_begin" + "NO_MODULE" "LIBRARY;PRIVATE_FILE;PUBLIC_FILE" "PUBLIC_DEPENDENCIES;PRIVATE_DEPENDENCIES" ${ARGN}) + + if ("${arg_LIBRARY}" STREQUAL "" AND (NOT ${arg_NO_MODULE})) + message(FATAL_ERROR "qt_feature_begin_module needs a LIBRARY name! (or specify NO_MODULE)") + endif() + if ("${arg_PUBLIC_FILE}" STREQUAL "") + message(FATAL_ERROR "qt_feature_begin_module needs a PUBLIC_FILE name!") + endif() + if ("${arg_PRIVATE_FILE}" STREQUAL "") + message(FATAL_ERROR "qt_feature_begin_module needs a PRIVATE_FILE name!") + endif() + + set(__QtFeature_library "${arg_LIBRARY}" PARENT_SCOPE) + set(__QtFeature_public_features "" PARENT_SCOPE) + set(__QtFeature_private_features "" PARENT_SCOPE) + set(__QtFeature_internal_features "" PARENT_SCOPE) + + set(__QtFeature_private_file "${arg_PRIVATE_FILE}" PARENT_SCOPE) + set(__QtFeature_public_file "${arg_PUBLIC_FILE}" PARENT_SCOPE) + + set(__QtFeature_private_extra "" PARENT_SCOPE) + set(__QtFeature_public_extra "" PARENT_SCOPE) + + set(__QtFeature_config_definitions "" PARENT_SCOPE) + + set(__QtFeature_define_definitions "" PARENT_SCOPE) +endfunction() + +function(qt_feature_normalize_name name out_var) + # Normalize the feature name to something CMake can deal with. + if(name MATCHES "c\\+\\+") + string(REGEX REPLACE "[^a-zA-Z0-9_]" "x" name "${name}") + else() + string(REGEX REPLACE "[^a-zA-Z0-9_]" "_" name "${name}") + endif() + set(${out_var} "${name}" PARENT_SCOPE) +endfunction() + +function(qt_feature feature) + set(original_name "${feature}") + qt_feature_normalize_name("${feature}" feature) + set_property(GLOBAL PROPERTY QT_FEATURE_ORIGINAL_NAME_${feature} "${original_name}") + + qt_parse_all_arguments(arg "qt_feature" + "PRIVATE;PUBLIC" + "LABEL;PURPOSE;SECTION;" "AUTODETECT;CONDITION;ENABLE;DISABLE;EMIT_IF" ${ARGN}) + + set(_QT_FEATURE_DEFINITION_${feature} ${ARGN} PARENT_SCOPE) + + # Register feature for future use: + if (arg_PUBLIC) + list(APPEND __QtFeature_public_features "${feature}") + endif() + if (arg_PRIVATE) + list(APPEND __QtFeature_private_features "${feature}") + endif() + if (NOT arg_PUBLIC AND NOT arg_PRIVATE) + list(APPEND __QtFeature_internal_features "${feature}") + endif() + + + set(__QtFeature_public_features ${__QtFeature_public_features} PARENT_SCOPE) + set(__QtFeature_private_features ${__QtFeature_private_features} PARENT_SCOPE) + set(__QtFeature_internal_features ${__QtFeature_internal_features} PARENT_SCOPE) +endfunction() + +function(qt_evaluate_to_boolean expressionVar) + if(${${expressionVar}}) + set(${expressionVar} ON PARENT_SCOPE) + else() + set(${expressionVar} OFF PARENT_SCOPE) + endif() +endfunction() + +function(qt_evaluate_config_expression resultVar) + set(result "") + set(nestingLevel 0) + set(skipNext OFF) + set(expression "${ARGN}") + list(LENGTH expression length) + + math(EXPR length "${length}-1") + foreach(memberIdx RANGE ${length}) + if(${skipNext}) + set(skipNext OFF) + continue() + endif() + + list(GET expression ${memberIdx} member) + + if("${member}" STREQUAL "(") + if(${nestingLevel} GREATER 0) + list(APPEND result ${member}) + endif() + math(EXPR nestingLevel "${nestingLevel} + 1") + continue() + elseif("${member}" STREQUAL ")") + math(EXPR nestingLevel "${nestingLevel} - 1") + if(nestingLevel LESS 0) + break() + endif() + if(${nestingLevel} EQUAL 0) + qt_evaluate_config_expression(result ${result}) + else() + list(APPEND result ${member}) + endif() + continue() + elseif(${nestingLevel} GREATER 0) + list(APPEND result ${member}) + continue() + elseif("${member}" STREQUAL "NOT") + list(APPEND result ${member}) + continue() + elseif("${member}" STREQUAL "AND") + qt_evaluate_to_boolean(result) + if(NOT ${result}) + break() + endif() + set(result "") + elseif("${member}" STREQUAL "OR") + qt_evaluate_to_boolean(result) + if(${result}) + break() + endif() + set(result "") + elseif("${member}" STREQUAL "STREQUAL" AND memberIdx LESS ${length}) + # Unfortunately the semantics for STREQUAL in if() are broken when the + # RHS is an empty string and the parameters to if are coming through a variable. + # So we expect people to write the empty string with single quotes and then we + # do the comparison manually here. + list(LENGTH result lhsIndex) + math(EXPR lhsIndex "${lhsIndex}-1") + list(GET result ${lhsIndex} lhs) + list(REMOVE_AT result ${lhsIndex}) + set(lhs "${${lhs}}") + + math(EXPR rhsIndex "${memberIdx}+1") + set(skipNext ON) + + list(GET expression ${rhsIndex} rhs) + # We can't pass through an empty string with double quotes through various + # stages of substitution, so instead it is represented using single quotes + # and resolve here. + string(REGEX REPLACE "'(.*)'" "\\1" rhs "${rhs}") + + string(COMPARE EQUAL "${lhs}" "${rhs}" stringCompareResult) + list(APPEND result ${stringCompareResult}) + else() + string(FIND "${member}" "QT_FEATURE_" idx) + if(idx EQUAL 0) + # Remove the QT_FEATURE_ prefix + string(SUBSTRING "${member}" 11 -1 feature) + qt_evaluate_feature(${feature}) + endif() + + list(APPEND result ${member}) + endif() + endforeach() + # The 'TARGET Gui' case is handled by qt_evaluate_to_boolean, by passing those tokens verbatim + # to if(). + + if("${result}" STREQUAL "") + set(result ON) + else() + qt_evaluate_to_boolean(result) + endif() + + set(${resultVar} ${result} PARENT_SCOPE) +endfunction() + +function(qt_feature_set_cache_value resultVar feature emit_if calculated label) + if (DEFINED "FEATURE_${feature}") + # Must set up the cache + if (NOT (emit_if)) + message(FATAL_ERROR "Sanity check failed: FEATURE_${feature} that was not emitted was found in the CMakeCache.") + endif() + + # Revisit value: + set(cache "${FEATURE_${feature}}") + set(booly_values OFF NO FALSE N ON YES TRUE Y) + if ((cache IN_LIST booly_values) OR (cache GREATER_EQUAL 0)) + set(result "${cache}") + else() + message(FATAL_ERROR "Sanity check failed: FEATURE_${feature} has invalid value \"${cache}\"!") + endif() + # Fix-up user-provided values + set("FEATURE_${feature}" "${cache}" CACHE BOOL "${label}") + else() + # Initial setup: + if (emit_if) + set("FEATURE_${feature}" "${calculated}" CACHE BOOL "${label}") + set(result "${calculated}") + else() + set(result OFF) + endif() + endif() + + set("${resultVar}" "${result}" PARENT_SCOPE) +endfunction() + +macro(qt_feature_set_value feature cache emit_if condition label) + set(result "${cache}") + + if (NOT (condition) AND (cache)) + message(SEND_ERROR "Feature \"${feature}\": Forcing to \"${cache}\" breaks its condition.") + endif() + + if (DEFINED "QT_FEATURE_${feature}") + message(FATAL_ERROR "Feature ${feature} is already defined when evaluating configure.cmake features for ${target}.") + endif() + set(QT_FEATURE_${feature} "${result}" CACHE INTERNAL "Qt feature: ${feature}") +endmacro() + +function(qt_evaluate_feature feature) + # If the feature was set explicitly by the user to be on or off, in the cache, then + # there's nothing for us to do. + if(DEFINED "QT_FEATURE_${feature}") + return() + endif() + + if(NOT DEFINED _QT_FEATURE_DEFINITION_${feature}) + qt_debug_print_variables(DEDUP MATCH "^QT_FEATURE") + message(FATAL_ERROR "Attempting to evaluate feature ${feature} but its definition is missing. Either the feature does not exist or a dependency to the module that defines it is missing") + endif() + + cmake_parse_arguments(arg + "PRIVATE;PUBLIC" + "LABEL;PURPOSE;SECTION;" "AUTODETECT;CONDITION;ENABLE;DISABLE;EMIT_IF" ${_QT_FEATURE_DEFINITION_${feature}}) + + if(DEFINED QT_FEATURE_${feature}) + return() + endif() + + if("${arg_ENABLE}" STREQUAL "") + set(arg_ENABLE OFF) + endif() + + if("${arg_DISABLE}" STREQUAL "") + set(arg_DISABLE OFF) + endif() + + if("${arg_AUTODETECT}" STREQUAL "") + set(arg_AUTODETECT ON) + endif() + + if("${arg_CONDITION}" STREQUAL "") + set(condition ON) + else() + qt_evaluate_config_expression(condition ${arg_CONDITION}) + endif() + + qt_evaluate_config_expression(disable_result ${arg_DISABLE}) + qt_evaluate_config_expression(enable_result ${arg_ENABLE}) + if(${disable_result}) + set(result OFF) + elseif((${enable_result}) OR (${arg_AUTODETECT})) + set(result ${condition}) + else() + # feature not auto-detected and not explicitly enabled + set(result OFF) + endif() + + if("${arg_EMIT_IF}" STREQUAL "") + set(emit_if ON) + else() + qt_evaluate_config_expression(emit_if ${arg_EMIT_IF}) + endif() + + if (NOT (condition) AND (calculated)) + message(FATAL_ERROR "Sanity check failed: Feature ${feature} is enabled but condition does not hold true.") + endif() + + qt_feature_set_cache_value(cache "${feature}" "${emit_if}" "${result}" "${arg_LABEL}") + qt_feature_set_value("${feature}" "${cache}" "${emit_if}" "${condition}" "${arg_LABEL}") +endfunction() + +function(qt_feature_config feature config_var_name) + qt_feature_normalize_name("${feature}" feature) + qt_parse_all_arguments(arg "qt_feature_config" "NEGATE" "NAME" "" ${ARGN}) + + # Store all the config related info in a unique variable key. + set(key_name "_QT_FEATURE_CONFIG_DEFINITION_${feature}_${config_var_name}") + set(${key_name} "FEATURE;${feature};CONFIG_VAR_NAME;${config_var_name};${ARGN}" PARENT_SCOPE) + + # Store the key for later evaluation. + list(APPEND __QtFeature_config_definitions "${key_name}") + + set(__QtFeature_config_definitions ${__QtFeature_config_definitions} PARENT_SCOPE) +endfunction() + +function(qt_evaluate_qmake_config_values key) + if(NOT DEFINED ${key}) + qt_debug_print_variables(DEDUP MATCH "^_QT_FEATURE_CONFIG_DEFINITION") + message(FATAL_ERROR + "Attempting to evaluate feature config ${key} but its definition is missing. ") + endif() + + cmake_parse_arguments(arg + "NEGATE" + "FEATURE;NAME;CONFIG_VAR_NAME" + "" ${${key}}) + + set(expected "NOT") + if (arg_NEGATE) + set(expected "") + endif() + + # If no custom name is specified, then the config value is the same as the feature name. + if(NOT arg_NAME) + set(arg_NAME "${arg_FEATURE}") + endif() + + # The feature condition is false, there is no need to export any config values. + if(${expected} ${QT_FEATURE_${arg_FEATURE}}) + return() + endif() + + if(arg_CONFIG_VAR_NAME STREQUAL "QMAKE_PUBLIC_CONFIG") + list(APPEND __QtFeature_qmake_public_config "${arg_NAME}") + set(__QtFeature_qmake_public_config "${__QtFeature_qmake_public_config}" PARENT_SCOPE) + endif() + if(arg_CONFIG_VAR_NAME STREQUAL "QMAKE_PRIVATE_CONFIG") + list(APPEND __QtFeature_qmake_private_config "${arg_NAME}") + set(__QtFeature_qmake_private_config "${__QtFeature_qmake_private_config}" PARENT_SCOPE) + endif() + if(arg_CONFIG_VAR_NAME STREQUAL "QMAKE_PUBLIC_QT_CONFIG") + list(APPEND __QtFeature_qmake_public_qt_config "${arg_NAME}") + set(__QtFeature_qmake_public_qt_config "${__QtFeature_qmake_public_qt_config}" PARENT_SCOPE) + endif() +endfunction() + +function(qt_feature_definition feature name) + qt_feature_normalize_name("${feature}" feature) + qt_parse_all_arguments(arg "qt_feature_definition" "NEGATE" "VALUE" "" ${ARGN}) + + # Store all the define related info in a unique variable key. + set(key_name "_QT_FEATURE_DEFINE_DEFINITION_${feature}_${name}") + set(${key_name} "FEATURE;${feature};NAME;${name};${ARGN}" PARENT_SCOPE) + + # Store the key for later evaluation and subsequent define generation: + list(APPEND __QtFeature_define_definitions "${key_name}") + + set(__QtFeature_define_definitions ${__QtFeature_define_definitions} PARENT_SCOPE) +endfunction() + +function(qt_evaluate_feature_definition key) + if(NOT DEFINED ${key}) + qt_debug_print_variables(DEDUP MATCH "^_QT_FEATURE_DEFINE_DEFINITION") + message(FATAL_ERROR "Attempting to evaluate feature define ${key} but its definition is missing. ") + endif() + + cmake_parse_arguments(arg + "NEGATE;" + "FEATURE;NAME;VALUE;" "" ${${key}}) + + set(expected ON) + if (arg_NEGATE) + set(expected OFF) + endif() + + set(msg "") + + if(QT_FEATURE_${arg_FEATURE} STREQUAL expected) + if (arg_VALUE) + string(APPEND msg "#define ${arg_NAME} ${arg_VALUE}\n") + else() + string(APPEND msg "#define ${arg_NAME}\n") + endif() + + string(APPEND __QtFeature_public_extra "${msg}") + endif() + + set(__QtFeature_public_extra ${__QtFeature_public_extra} PARENT_SCOPE) +endfunction() + +function(qt_extra_definition name value) + qt_parse_all_arguments(arg "qt_extra_definition" "PUBLIC;PRIVATE" "" "" ${ARGN}) + + if (arg_PUBLIC) + string(APPEND __QtFeature_public_extra "\n#define ${name} ${value}\n") + elseif(arg_PRIVATE) + string(APPEND __QtFeature_private_extra "\n#define ${name} ${value}\n") + endif() + + set(__QtFeature_public_extra ${__QtFeature_public_extra} PARENT_SCOPE) + set(__QtFeature_private_extra ${__QtFeature_private_extra} PARENT_SCOPE) +endfunction() + +function(qt_internal_generate_feature_line line feature) + if (QT_FEATURE_${feature} STREQUAL "ON") + set(line "#define QT_FEATURE_${feature} 1\n\n" PARENT_SCOPE) + elseif(QT_FEATURE_${feature} STREQUAL "OFF") + set(line "#define QT_FEATURE_${feature} -1\n\n" PARENT_SCOPE) + elseif(QT_FEATURE_${feature} STREQUAL "UNSET") + set(line "#define QT_FEATURE_${feature} 0\n\n" PARENT_SCOPE) + else() + message(FATAL_ERROR "${feature} has unexpected value \"${QT_FEATURE_${feature}}\"!") + endif() +endfunction() + +function(qt_internal_feature_write_file file features extra) + message("Generating file ${file}.") + set(contents "") + foreach(it ${features}) + qt_internal_generate_feature_line(line "${it}") + string(APPEND contents "${line}") + endforeach() + string(APPEND contents "${extra}") + + file(GENERATE OUTPUT "${file}" CONTENT "${contents}") +endfunction() + +function(qt_feature_module_end) + set(flags) + set(options OUT_VAR_PREFIX) + set(multiopts) + cmake_parse_arguments(arg "${flags}" "${options}" "${multiopts}" ${ARGN}) + set(target ${arg_UNPARSED_ARGUMENTS}) + + # The value of OUT_VAR_PREFIX is used as a prefix for output variables that should be + # set in the parent scope. + if(NOT arg_OUT_VAR_PREFIX) + set(arg_OUT_VAR_PREFIX "") + endif() + + set(all_features ${__QtFeature_public_features} ${__QtFeature_private_features} ${__QtFeature_internal_features}) + list(REMOVE_DUPLICATES all_features) + + foreach(feature ${all_features}) + qt_evaluate_feature(${feature}) + endforeach() + + # Evaluate custom cache assignments. + foreach(cache_var_name ${__QtFeature_custom_enabled_cache_variables}) + set(${cache_var_name} ON CACHE BOOL "Force enabled by platform." FORCE) + endforeach() + foreach(cache_var_name ${__QtFeature_custom_disabled_cache_variables}) + set(${cache_var_name} OFF CACHE BOOL "Force disabled by platform." FORCE) + endforeach() + + set(enabled_public_features "") + set(disabled_public_features "") + set(enabled_private_features "") + set(disabled_private_features "") + + foreach(feature ${__QtFeature_public_features}) + if(QT_FEATURE_${feature}) + list(APPEND enabled_public_features ${feature}) + else() + list(APPEND disabled_public_features ${feature}) + endif() + endforeach() + + foreach(feature ${__QtFeature_private_features}) + if(QT_FEATURE_${feature}) + list(APPEND enabled_private_features ${feature}) + else() + list(APPEND disabled_private_features ${feature}) + endif() + endforeach() + + foreach(key ${__QtFeature_config_definitions}) + qt_evaluate_qmake_config_values(${key}) + unset(${key} PARENT_SCOPE) + endforeach() + + foreach(key ${__QtFeature_define_definitions}) + qt_evaluate_feature_definition(${key}) + unset(${key} PARENT_SCOPE) + endforeach() + + foreach(feature ${all_features}) + unset(_QT_FEATURE_DEFINITION_${feature} PARENT_SCOPE) + endforeach() + + qt_internal_feature_write_file("${CMAKE_CURRENT_BINARY_DIR}/${__QtFeature_private_file}" + "${__QtFeature_private_features}" "${__QtFeature_private_extra}" + ) + + qt_internal_feature_write_file("${CMAKE_CURRENT_BINARY_DIR}/${__QtFeature_public_file}" + "${__QtFeature_public_features}" "${__QtFeature_public_extra}" + ) + + # Extra header injections which have to have forwarding headers created by + # qt_install_injections. + # Skip creating forwarding headers if qt_feature_module_begin was called with NO_MODULE, aka + # there is no include/<module_name> so there's no place to put the forwarding headers. + if(__QtFeature_library) + set(injections "") + qt_compute_injection_forwarding_header("${__QtFeature_library}" + SOURCE "${__QtFeature_public_file}" + OUT_VAR injections) + qt_compute_injection_forwarding_header("${__QtFeature_library}" + SOURCE "${__QtFeature_private_file}" PRIVATE + OUT_VAR injections) + + set(${arg_OUT_VAR_PREFIX}extra_library_injections ${injections} PARENT_SCOPE) + endif() + + if (NOT ("${target}" STREQUAL "NO_MODULE")) + get_target_property(targetType "${target}" TYPE) + if("${targetType}" STREQUAL "INTERFACE_LIBRARY") + set(propertyPrefix "INTERFACE_") + else() + set(propertyPrefix "") + set_target_properties("${target}" PROPERTIES EXPORT_PROPERTIES "QT_ENABLED_PUBLIC_FEATURES;QT_DISABLED_PUBLIC_FEATURES;QT_ENABLED_PRIVATE_FEATURES;QT_DISABLED_PRIVATE_FEATURES;MODULE_PLUGIN_TYPES;QT_PLUGINS;QT_QMAKE_PUBLIC_CONFIG;QT_QMAKE_PRIVATE_CONFIG;QT_QMAKE_PUBLIC_QT_CONFIG") + endif() + foreach(visibility public private) + string(TOUPPER "${visibility}" capitalVisibility) + foreach(state enabled disabled) + string(TOUPPER "${state}" capitalState) + + set_property(TARGET "${target}" PROPERTY ${propertyPrefix}QT_${capitalState}_${capitalVisibility}_FEATURES "${${state}_${visibility}_features}") + endforeach() + endforeach() + + set_property(TARGET "${target}" + PROPERTY ${propertyPrefix}QT_QMAKE_PUBLIC_CONFIG + "${__QtFeature_qmake_public_config}") + set_property(TARGET "${target}" + PROPERTY ${propertyPrefix}QT_QMAKE_PRIVATE_CONFIG + "${__QtFeature_qmake_private_config}") + set_property(TARGET "${target}" + PROPERTY ${propertyPrefix}QT_QMAKE_PUBLIC_QT_CONFIG + "${__QtFeature_qmake_public_qt_config}") + + # Config values were the old-school features before actual configure.json features were + # implemented. Therefore "CONFIG+=foo" values should be considered features as well, + # so that CMake can find them when building qtmultimedia for example. + if(__QtFeature_qmake_public_config) + set_property(TARGET "${target}" + APPEND PROPERTY ${propertyPrefix}QT_ENABLED_PUBLIC_FEATURES + ${__QtFeature_qmake_public_config}) + endif() + if(__QtFeature_qmake_private_config) + set_property(TARGET "${target}" + APPEND PROPERTY ${propertyPrefix}QT_ENABLED_PRIVATE_FEATURES + ${__QtFeature_qmake_private_config}) + endif() + if(__QtFeature_qmake_public_qt_config) + set_property(TARGET "${target}" + APPEND PROPERTY ${propertyPrefix}QT_ENABLED_PUBLIC_FEATURES + ${__QtFeature_qmake_public_qt_config}) + endif() + + qt_feature_copy_global_config_features_to_core(${target}) + endif() + + unset(__QtFeature_library PARENT_SCOPE) + unset(__QtFeature_public_features PARENT_SCOPE) + unset(__QtFeature_private_features PARENT_SCOPE) + unset(__QtFeature_internal_features PARENT_SCOPE) + + unset(__QtFeature_private_file PARENT_SCOPE) + unset(__QtFeature_public_file PARENT_SCOPE) + + unset(__QtFeature_private_extra PARENT_SCOPE) + unset(__QtFeature_public_extra PARENT_SCOPE) + + unset(__QtFeature_define_definitions PARENT_SCOPE) + unset(__QtFeature_custom_enabled_features PARENT_SCOPE) + unset(__QtFeature_custom_disabled_features PARENT_SCOPE) +endfunction() + +function(qt_feature_copy_global_config_features_to_core target) + # CMake doesn't support setting custom properties on exported INTERFACE libraries + # See https://gitlab.kitware.com/cmake/cmake/issues/19261. + # To circumvent that, copy the properties from GlobalConfig to Core target. + # This way the global features actually get set in the generated CoreTargets.cmake file. + if(target STREQUAL Core) + foreach(visibility public private) + string(TOUPPER "${visibility}" capitalVisibility) + foreach(state enabled disabled) + string(TOUPPER "${state}" capitalState) + + set(core_property_name "QT_${capitalState}_${capitalVisibility}_FEATURES") + set(global_property_name "INTERFACE_${core_property_name}") + + get_property(core_values TARGET Core PROPERTY ${core_property_name}) + get_property(global_values TARGET GlobalConfig PROPERTY ${global_property_name}) + + set(total_values ${core_values} ${global_values}) + set_property(TARGET Core PROPERTY ${core_property_name} ${total_values}) + endforeach() + endforeach() + + set(config_property_names + QT_QMAKE_PUBLIC_CONFIG QT_QMAKE_PRIVATE_CONFIG QT_QMAKE_PUBLIC_QT_CONFIG ) + foreach(property_name ${config_property_names}) + set(core_property_name "${property_name}") + set(global_property_name "INTERFACE_${core_property_name}") + + get_property(core_values TARGET Core PROPERTY ${core_property_name}) + get_property(global_values TARGET GlobalConfig PROPERTY ${global_property_name}) + + set(total_values ${core_values} ${global_values}) + set_property(TARGET Core PROPERTY ${core_property_name} ${total_values}) + endforeach() + endif() +endfunction() + +function(qt_config_compile_test name) + if(DEFINED "TEST_${name}") + return() + endif() + + cmake_parse_arguments(arg "" "LABEL;PROJECT_PATH;C_STANDARD;CXX_STANDARD" "LIBRARIES;CODE" ${ARGN}) + + if(arg_PROJECT_PATH) + message(STATUS "Performing Test ${arg_LABEL}") + try_compile(HAVE_${name} "${CMAKE_BINARY_DIR}/config.tests/${name}" "${arg_PROJECT_PATH}" + "${name}") + + if(${HAVE_${name}}) + set(status_label "Success") + else() + set(status_label "Failed") + endif() + message(STATUS "Performing Test ${arg_LABEL} - ${status_label}") + else() + foreach(library IN ITEMS ${arg_LIBRARIES}) + if(NOT TARGET "${library}") + # If the dependency looks like a cmake target, then make this compile test + # fail instead of cmake abort later via CMAKE_REQUIRED_LIBRARIES. + string(FIND "${library}" "::" cmake_target_namespace_separator) + if(NOT cmake_target_namespace_separator EQUAL -1) + set(HAVE_${name} FALSE) + break() + endif() + endif() + endforeach() + + if(NOT DEFINED HAVE_${name}) + set(_save_CMAKE_C_STANDARD "${CMAKE_C_STANDARD}") + set(_save_CMAKE_CXX_STANDARD "${CMAKE_CXX_STANDARD}") + + if(arg_C_STANDARD) + set(CMAKE_C_STANDARD "${arg_C_STANDARD}") + endif() + + if(arg_CXX_STANDARD) + set(CMAKE_CXX_STANDARD "${arg_CXX_STANDARD}") + endif() + + set(_save_CMAKE_REQUIRED_LIBRARIES "${CMAKE_REQUIRED_LIBRARIES}") + set(CMAKE_REQUIRED_LIBRARIES "${arg_LIBRARIES}") + check_cxx_source_compiles("${arg_UNPARSED_ARGUMENTS} ${arg_CODE}" HAVE_${name}) + set(CMAKE_REQUIRED_LIBRARIES "${_save_CMAKE_REQUIRED_LIBRARIES}") + + set(CMAKE_C_STANDARD "${_save_CMAKE_C_STANDARD}") + set(CMAKE_CXX_STANDARD "${_save_CMAKE_CXX_STANDARD}") + endif() + endif() + + set(TEST_${name} "${HAVE_${name}}" CACHE INTERNAL "${arg_LABEL}") +endfunction() + +# This function should be used for passing required try compile platform variables to the +# project-based try_compile() call. +# out_var will be a list of -Dfoo=bar strings, suitable to pass to CMAKE_FLAGS. +function(qt_get_platform_try_compile_vars out_var) + # Use the regular variables that are used for source-based try_compile() calls. + set(flags "${CMAKE_TRY_COMPILE_PLATFORM_VARIABLES}") + + # Pass toolchain files. + if(CMAKE_TOOLCHAIN_FILE) + list(APPEND flags "CMAKE_TOOLCHAIN_FILE") + endif() + if(VCPKG_CHAINLOAD_TOOLCHAIN_FILE) + list(APPEND flags "VCPKG_CHAINLOAD_TOOLCHAIN_FILE") + endif() + + # Assemble the list with regular options. + set(flags_cmd_line "") + foreach(flag ${flags}) + if(${flag}) + list(APPEND flags_cmd_line "-D${flag}=${${flag}}") + endif() + endforeach() + + # Pass darwin specific options. + if(APPLE_UIKIT) + if(CMAKE_OSX_ARCHITECTURES) + list(GET CMAKE_OSX_ARCHITECTURES 0 osx_first_arch) + + # Do what qmake does, aka when doing a simulator_and_device build, build the + # target architecture test only with the first given architecture, which should be the + # device architecture, aka some variation of "arm" (armv7, arm64). + list(APPEND flags_cmd_line "-DCMAKE_OSX_ARCHITECTURES:STRING=${osx_first_arch}") + endif() + # Also specify the sysroot, but only if not doing a simulator_and_device build. + # So keep the sysroot empty for simulator_and_device builds. + if(QT_UIKIT_SDK) + list(APPEND flags_cmd_line "-DCMAKE_OSX_SYSROOT:STRING=${QT_UIKIT_SDK}") + endif() + endif() + + set("${out_var}" "${flags_cmd_line}" PARENT_SCOPE) +endfunction() + +function(qt_config_compile_test_x86simd extension label) + if (DEFINED TEST_X86SIMD_${extension}) + return() + endif() + + set(flags "-DSIMD:string=${extension}") + + qt_get_platform_try_compile_vars(platform_try_compile_vars) + list(APPEND flags ${platform_try_compile_vars}) + + message(STATUS "Performing SIMD Test ${label}") + try_compile("TEST_X86SIMD_${extension}" + "${CMAKE_CURRENT_BINARY_DIR}/config.tests/x86_simd_${extension}" + "${CMAKE_CURRENT_SOURCE_DIR}/config.tests/x86_simd" + x86_simd + CMAKE_FLAGS ${flags}) + if(${TEST_X86SIMD_${extension}}) + set(status_label "Success") + else() + set(status_label "Failed") + endif() + message(STATUS "Performing SIMD Test ${label} - ${status_label}") + set(TEST_subarch_${extension} "${TEST_X86SIMD_${extension}}" CACHE INTERNAL "${label}") +endfunction() + +function(qt_make_features_available target) + if(NOT "${target}" MATCHES "^${QT_CMAKE_EXPORT_NAMESPACE}::[a-zA-Z][a-zA-Z0-9_-]*$") + message(FATAL_ERROR "${target} does not match ${QT_CMAKE_EXPORT_NAMESPACE}::[a-zA-Z][a-zA-Z0-9_-]*. INVALID NAME.") + endif() + if(NOT TARGET ${target}) + message(FATAL_ERROR "${target} not found.") + endif() + + get_target_property(target_type "${target}" TYPE) + if("${target_type}" STREQUAL "INTERFACE_LIBRARY") + set(property_prefix "INTERFACE_") + else() + set(property_prefix "") + endif() + foreach(visibility IN ITEMS PUBLIC PRIVATE) + set(value ON) + foreach(state IN ITEMS ENABLED DISABLED) + get_target_property(features "${target}" ${property_prefix}QT_${state}_${visibility}_FEATURES) + if("${features}" STREQUAL "features-NOTFOUND") + continue() + endif() + foreach(feature IN ITEMS ${features}) + if (DEFINED "QT_FEATURE_${feature}" AND NOT "${QT_FEATURE_${feature}}" STREQUAL "${value}") + message(FATAL_ERROR "Feature ${feature} is already defined and has a different value when importing features from ${target}.") + endif() + set(QT_FEATURE_${feature} "${value}" CACHE INTERNAL "Qt feature: ${feature} (from target ${target})") + endforeach() + set(value OFF) + endforeach() + endforeach() +endfunction() + + |