mirror of https://github.com/qt/qtbase.git
244 lines
9.5 KiB
CMake
244 lines
9.5 KiB
CMake
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function(qt_internal_add_linker_version_script target)
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qt_parse_all_arguments(arg "qt_internal_add_linker" "INTERNAL" "" "PRIVATE_HEADERS" ${ARGN})
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if (TEST_ld_version_script)
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if (arg_INTERNAL)
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set(contents "Qt_${PROJECT_VERSION_MAJOR}_PRIVATE_API { *; };")
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else()
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set(contents "Qt_${PROJECT_VERSION_MAJOR}_PRIVATE_API {\n qt_private_api_tag*;\n")
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foreach(ph ${arg_PRIVATE_HEADERS})
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string(APPEND contents " @FILE:${ph}@\n")
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endforeach()
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string(APPEND contents "};\n")
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set(current "Qt_${PROJECT_VERSION_MAJOR}")
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if (QT_NAMESPACE STREQUAL "")
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set(tag_symbol "qt_version_tag")
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else()
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set(tag_symbol "qt_version_tag_${QT_NAMESPACE}")
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endif()
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string(APPEND contents "${current} { *; };\n")
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foreach(minor_version RANGE ${PROJECT_VERSION_MINOR})
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set(previous "${current}")
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set(current "Qt_${PROJECT_VERSION_MAJOR}.${minor_version}")
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if (minor_version EQUAL ${PROJECT_VERSION_MINOR})
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string(APPEND contents "${current} { ${tag_symbol}; } ${previous};\n")
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else()
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string(APPEND contents "${current} {} ${previous};\n")
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endif()
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endforeach()
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set(infile "${CMAKE_CURRENT_BINARY_DIR}/${target}.version.in")
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set(outfile "${CMAKE_CURRENT_BINARY_DIR}/${target}.version")
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file(GENERATE OUTPUT "${infile}" CONTENT "${contents}")
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qt_ensure_perl()
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add_custom_command(TARGET "${target}" PRE_LINK
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COMMAND "${HOST_PERL}" "${QT_MKSPECS_DIR}/features/data/unix/findclasslist.pl" < "${infile}" > "${outfile}"
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BYPRODUCTS "${outfile}" DEPENDS "${infile}"
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WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
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COMMENT "Generating version linker script"
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)
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target_link_options("${target}" PRIVATE "-Wl,--version-script,${outfile}")
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endif()
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endif()
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endfunction()
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function(qt_internal_add_link_flags_no_undefined target)
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if (NOT QT_BUILD_SHARED_LIBS)
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return()
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endif()
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if (GCC OR CLANG)
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set(previous_CMAKE_REQUIRED_LINK_OPTIONS ${CMAKE_REQUIRED_LINK_OPTIONS})
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set(CMAKE_REQUIRED_LINK_OPTIONS "-Wl,-undefined,error")
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check_cxx_source_compiles("int main() {}" HAVE_DASH_UNDEFINED_SYMBOLS)
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if(HAVE_DASH_UNDEFINED_SYMBOLS)
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set(no_undefined_flag "-Wl,-undefined,error")
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endif()
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set(CMAKE_REQUIRED_LINK_OPTIONS "-Wl,--no-undefined")
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check_cxx_source_compiles("int main() {}" HAVE_DASH_DASH_NO_UNDEFINED)
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if(HAVE_DASH_DASH_NO_UNDEFINED)
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set(no_undefined_flag "-Wl,--no-undefined")
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endif()
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set(CMAKE_REQUIRED_LINK_OPTIONS ${previous_CMAKE_REQUIRED_LINK_OPTIONS})
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if (NOT HAVE_DASH_UNDEFINED_SYMBOLS AND NOT HAVE_DASH_DASH_NO_UNDEFINED)
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message(FATAL_ERROR "Platform linker doesn't support erroring upon encountering undefined symbols. Target:\"${target}\".")
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endif()
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target_link_options("${target}" PRIVATE "${no_undefined_flag}")
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endif()
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endfunction()
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function(qt_internal_apply_gc_binaries_conditional target visibility)
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# Should only be applied when the feature is enabled, aka for static builds.
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if(NOT QT_FEATURE_gc_binaries)
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return()
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endif()
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qt_internal_apply_gc_binaries("${target}" "${visibility}")
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endfunction()
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function(qt_internal_apply_gc_binaries target visibility)
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set(possible_visibilities PRIVATE INTERFACE PUBLIC)
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list(FIND possible_visibilities "${visibility}" known_visibility)
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if (known_visibility EQUAL "-1")
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message(FATAL_ERROR "Visibitily setting must be one of PRIVATE, INTERFACE or PUBLIC.")
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endif()
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if ((GCC OR CLANG) AND NOT EMSCRIPTEN AND NOT UIKIT)
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if(APPLE)
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set(gc_sections_flag "-Wl,-dead_strip")
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elseif(SOLARIS)
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set(gc_sections_flag "-Wl,-z,ignore")
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elseif(LINUX OR BSD OR WIN32 OR ANDROID)
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set(gc_sections_flag "-Wl,--gc-sections")
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endif()
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endif()
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if(gc_sections_flag)
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target_link_options("${target}" ${visibility} "${gc_sections_flag}")
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endif()
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if((GCC OR CLANG OR ICC) AND NOT EMSCRIPTEN AND NOT UIKIT)
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set(split_sections_flags "-ffunction-sections" "-fdata-sections")
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endif()
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if(split_sections_flags)
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target_compile_options("${target}" ${visibility} ${split_sections_flags})
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endif()
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endfunction()
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function(qt_internal_apply_intel_cet target visibility)
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if(NOT QT_FEATURE_intelcet)
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return()
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endif()
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set(possible_visibilities PRIVATE INTERFACE PUBLIC)
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list(FIND possible_visibilities "${visibility}" known_visibility)
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if (known_visibility EQUAL "-1")
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message(FATAL_ERROR "Visibitily setting must be one of PRIVATE, INTERFACE or PUBLIC.")
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endif()
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if(GCC)
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set(flags "-mshstk")
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endif()
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if(flags)
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target_compile_options("${target}" ${visibility} "${flags}")
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endif()
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endfunction()
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function(qt_internal_library_deprecation_level result)
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if(WIN32)
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# On Windows, due to the way DLLs work, we need to export all functions,
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# including the inlines
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list(APPEND deprecations "QT_DISABLE_DEPRECATED_BEFORE=0x040800")
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else()
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# On other platforms, Qt's own compilation goes needs to compile the Qt 5.0 API
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list(APPEND deprecations "QT_DISABLE_DEPRECATED_BEFORE=0x050000")
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endif()
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list(APPEND deprecations "QT_DEPRECATED_WARNINGS_SINCE=0x060000")
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set("${result}" deprecations PARENT_SCOPE)
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endfunction()
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# Sets the exceptions flags for the given target
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function(qt_internal_set_no_exceptions_flags target)
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target_compile_definitions("${target}" PRIVATE "QT_NO_EXCEPTIONS")
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if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "MSVC")
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target_compile_options("${target}" PRIVATE "/wd4530" "/wd4577")
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elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
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target_compile_options("${target}" PRIVATE "-fno-exceptions")
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elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "AppleClang")
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target_compile_options("${target}" PRIVATE "-fno-exceptions")
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elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
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target_compile_options("${target}" PRIVATE "-fno-exceptions")
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elseif ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Intel")
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target_compile_options("${target}" PRIVATE "-fno-exceptions")
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endif()
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endfunction()
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function(qt_skip_warnings_are_errors target)
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get_target_property(target_type "${target}" TYPE)
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if(target_type STREQUAL "INTERFACE_LIBRARY")
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return()
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endif()
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set_target_properties("${target}" PROPERTIES QT_SKIP_WARNINGS_ARE_ERRORS ON)
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endfunction()
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function(qt_skip_warnings_are_errors_when_repo_unclean target)
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if(QT_REPO_NOT_WARNINGS_CLEAN)
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qt_skip_warnings_are_errors("${target}")
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endif()
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endfunction()
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function(qt_disable_warnings target)
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get_target_property(target_type "${target}" TYPE)
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if(target_type STREQUAL "INTERFACE_LIBRARY")
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return()
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endif()
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set_target_properties("${target}" PROPERTIES QT_COMPILE_OPTIONS_DISABLE_WARNINGS ON)
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endfunction()
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function(qt_set_symbol_visibility_preset target value)
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get_target_property(target_type "${target}" TYPE)
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if(target_type STREQUAL "INTERFACE_LIBRARY")
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return()
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endif()
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set_target_properties("${target}" PROPERTIES C_VISIBILITY_PRESET "${value}")
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set_target_properties("${target}" PROPERTIES CXX_VISIBILITY_PRESET "${value}")
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set_target_properties("${target}" PROPERTIES OBJC_VISIBILITY_PRESET "${value}")
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set_target_properties("${target}" PROPERTIES OBJCXX_VISIBILITY_PRESET "${value}")
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endfunction()
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function(qt_set_symbol_visibility_hidden target)
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qt_set_symbol_visibility_preset("${target}" "hidden")
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endfunction()
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function(qt_set_language_standards)
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## Use the latest standard the compiler supports (same as qt_common.prf)
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if (QT_FEATURE_cxx2a)
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set(CMAKE_CXX_STANDARD 20 PARENT_SCOPE)
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else()
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set(CMAKE_CXX_STANDARD 17 PARENT_SCOPE)
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endif()
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if (c_std_11 IN_LIST CMAKE_C_COMPILE_FEATURES)
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set(CMAKE_C_STANDARD 11 PARENT_SCOPE)
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elseif (c_std_99 IN_LIST CMAKE_C_COMPILE_FEATURES)
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set(CMAKE_C_STANDARD 99 PARENT_SCOPE)
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endif()
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endfunction()
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function(qt_set_language_standards_interface_compile_features target)
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# Regardless of which C++ standard is used to build Qt itself, require C++17 when building
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# Qt applications using CMake (because the Qt header files use C++17 features).
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set(cpp_feature "cxx_std_17")
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target_compile_features("${target}" INTERFACE ${cpp_feature})
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endfunction()
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function(qt_enable_msvc_cplusplus_define target visibility)
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# For MSVC we need to explicitly pass -Zc:__cplusplus to get correct __cplusplus.
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# Check qt_config_compile_test for more info.
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if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC" AND MSVC_VERSION GREATER_EQUAL 1913)
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target_compile_options("${target}" ${visibility} "-Zc:__cplusplus")
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endif()
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endfunction()
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function(qt_enable_utf8_sources target)
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set(utf8_flags "")
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if(MSVC)
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list(APPEND utf8_flags "-utf-8")
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elseif(WIN32 AND ICC)
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list(APPEND utf8_flags "-Qoption,cpp,--unicode_source_kind,UTF-8")
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endif()
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if(utf8_flags)
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# Allow opting out by specifying the QT_NO_UTF8_SOURCE target property.
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set(genex_condition "$<NOT:$<BOOL:$<TARGET_PROPERTY:QT_NO_UTF8_SOURCE>>>")
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set(utf8_flags "$<${genex_condition}:${utf8_flags}>")
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target_compile_options("${target}" INTERFACE "${utf8_flags}")
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endif()
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endfunction()
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