OBS/obs-studio
OBS/obs-studio
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obs-studio/cmake/common/helpers_common.cmake

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CMake
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# OBS CMake common helper functions module
# cmake-format: off
# cmake-lint: disable=C0103
# cmake-lint: disable=C0301
# cmake-lint: disable=C0307
# cmake-lint: disable=R0912
# cmake-lint: disable=R0915
# cmake-format: on
include_guard(GLOBAL)
# message_configuration: Function to print configuration outcome
function(message_configuration)
include(FeatureSummary)
feature_summary(WHAT ALL VAR _feature_summary)
message(DEBUG "${_feature_summary}")
message(
NOTICE
" _ _ _ _ \n"
" ___ | |__ ___ ___| |_ _ _ __| (_) ___ \n"
" / _ \\| '_ \\/ __|_____/ __| __| | | |/ _` | |/ _ \\ \n"
" | (_) | |_) \\__ \\_____\\__ \\ |_| |_| | (_| | | (_) |\n"
" \\___/|_.__/|___/ |___/\\__|\\__,_|\\__,_|_|\\___/ \n"
"\nOBS: Application Version: ${OBS_VERSION} - Build Number: ${OBS_BUILD_NUMBER}\n"
"==================================================================================\n\n")
get_property(OBS_FEATURES_ENABLED GLOBAL PROPERTY OBS_FEATURES_ENABLED)
list(
SORT OBS_FEATURES_ENABLED
COMPARE NATURAL
CASE SENSITIVE
ORDER ASCENDING)
if(OBS_FEATURES_ENABLED)
message(NOTICE "------------------------ Enabled Features ------------------------")
foreach(feature IN LISTS OBS_FEATURES_ENABLED)
message(NOTICE " - ${feature}")
endforeach()
endif()
get_property(OBS_FEATURES_DISABLED GLOBAL PROPERTY OBS_FEATURES_DISABLED)
list(
SORT OBS_FEATURES_DISABLED
COMPARE NATURAL
CASE SENSITIVE
ORDER ASCENDING)
if(OBS_FEATURES_DISABLED)
message(NOTICE "------------------------ Disabled Features ------------------------")
foreach(feature IN LISTS OBS_FEATURES_DISABLED)
message(NOTICE " - ${feature}")
endforeach()
endif()
if(ENABLE_PLUGINS)
get_property(OBS_MODULES_ENABLED GLOBAL PROPERTY OBS_MODULES_ENABLED)
list(
SORT OBS_MODULES_ENABLED
COMPARE NATURAL
CASE SENSITIVE
ORDER ASCENDING)
if(OBS_MODULES_ENABLED)
message(NOTICE "------------------------ Enabled Modules ------------------------")
foreach(feature IN LISTS OBS_MODULES_ENABLED)
message(NOTICE " - ${feature}")
endforeach()
endif()
get_property(OBS_MODULES_DISABLED GLOBAL PROPERTY OBS_MODULES_DISABLED)
list(
SORT OBS_MODULES_DISABLED
COMPARE NATURAL
CASE SENSITIVE
ORDER ASCENDING)
if(OBS_MODULES_DISABLED)
message(NOTICE "------------------------ Disabled Modules ------------------------")
foreach(feature IN LISTS OBS_MODULES_DISABLED)
message(NOTICE " - ${feature}")
endforeach()
endif()
endif()
message(NOTICE "----------------------------------------------------------------------------------")
endfunction()
# target_enable_feature: Adds feature to list of enabled application features and sets optional compile definitions
function(target_enable_feature target feature_description)
set_property(GLOBAL APPEND PROPERTY OBS_FEATURES_ENABLED "${feature_description}")
if(ARGN)
target_compile_definitions(${target} PRIVATE ${ARGN})
endif()
endfunction()
# target_disable_feature: Adds feature to list of disabled application features and sets optional compile definitions
function(target_disable_feature target feature_description)
set_property(GLOBAL APPEND PROPERTY OBS_FEATURES_DISABLED "${feature_description}")
if(ARGN)
target_compile_definitions(${target} PRIVATE ${ARGN})
endif()
endfunction()
# target_disable: Adds target to list of disabled modules
function(target_disable target)
set_property(GLOBAL APPEND PROPERTY OBS_MODULES_DISABLED ${target})
endfunction()
# find_qt: Macro to find best possible Qt version for use with the project:
macro(find_qt)
set(multiValueArgs COMPONENTS COMPONENTS_WIN COMPONENTS_MAC COMPONENTS_LINUX)
cmake_parse_arguments(find_qt "" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
# Do not use versionless targets in the first step to avoid Qt::Core being clobbered by later opportunistic
# find_package runs
set(QT_NO_CREATE_VERSIONLESS_TARGETS TRUE)
message(DEBUG "Attempting to find Qt 6")
find_package(
Qt6
COMPONENTS Core
REQUIRED)
# Enable versionless targets for the remaining Qt components
set(QT_NO_CREATE_VERSIONLESS_TARGETS FALSE)
set(qt_components ${find_qt_COMPONENTS})
if(OS_WINDOWS)
list(APPEND qt_components ${find_qt_COMPONENTS_WIN})
elseif(OS_MACOS)
list(APPEND qt_components ${find_qt_COMPONENTS_MAC})
else()
list(APPEND qt_components ${find_qt_COMPONENTS_LINUX})
endif()
message(DEBUG "Trying to find Qt components ${qt_components}...")
find_package(Qt6 REQUIRED ${qt_components})
list(APPEND qt_components Core)
if("Gui" IN_LIST find_qt_COMPONENTS_LINUX)
list(APPEND qt_components "GuiPrivate")
endif()
# Check for versionless targets of each requested component and create if necessary
foreach(component IN LISTS qt_components)
message(DEBUG "Checking for target Qt::${component}")
if(NOT TARGET Qt::${component} AND TARGET Qt6::${component})
add_library(Qt::${component} INTERFACE IMPORTED)
set_target_properties(Qt::${component} PROPERTIES INTERFACE_LINK_LIBRARIES Qt6::${component})
endif()
endforeach()
endmacro()
# find_dependencies: Check linked interface and direct dependencies of target
function(find_dependencies)
set(oneValueArgs TARGET FOUND_VAR)
set(multiValueArgs)
cmake_parse_arguments(var "" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(NOT DEFINED is_root)
# Root of recursive dependency resolution
set(is_root TRUE)
set(nested_depth 0)
else()
# Branch of recursive dependency resolution
set(is_root FALSE)
math(EXPR nested_depth "${nested_depth}+1")
endif()
# * LINK_LIBRARIES are direct dependencies
# * INTERFACE_LINK_LIBRARIES are transitive dependencies
get_target_property(linked_libraries ${var_TARGET} LINK_LIBRARIES)
get_target_property(interface_libraries ${var_TARGET} INTERFACE_LINK_LIBRARIES)
message(DEBUG "[${nested_depth}] Linked libraries in target ${var_TARGET}: ${linked_libraries}")
message(DEBUG "[${nested_depth}] Linked interface libraries in target ${var_TARGET}: ${interface_libraries}")
# Consider CMake targets only
list(FILTER linked_libraries INCLUDE REGEX ".+::.+")
list(FILTER interface_libraries INCLUDE REGEX ".+::.+")
foreach(library IN LISTS linked_libraries interface_libraries)
if(NOT library)
continue()
elseif(library MATCHES "\\$<.*:[^>]+>")
# Generator expression found
if(library MATCHES "\\$<\\$<PLATFORM_ID:[^>]+>:.+>")
# Platform-dependent generator expression found - platforms are a comma-separated list of CMake host OS
# identifiers. Convert to CMake list and check if current host os is contained in list.
string(REGEX REPLACE "\\$<\\$<PLATFORM_ID:([^>]+)>:([^>]+)>" "\\1;\\2" gen_expression "${library}")
list(GET gen_expression 0 gen_platform)
list(GET gen_expression 1 gen_library)
string(REPLACE "," ";" gen_platform "${gen_platform}")
if(CMAKE_SYSTEM_NAME IN_LIST platform)
set(library "${gen_library}")
else()
continue()
endif()
elseif(library MATCHES "\\$<\\$<BOOL:[^>]+>:.+>")
# Boolean generator expression found - consider parameter a CMake variable that resolves into a CMake-like
# boolean value for a simple conditional check.
string(REGEX REPLACE "\\$<\\$<BOOL:([^>]+)>:([^>]+)>" "\\1;\\2" gen_expression "${library}")
list(GET gen_expression 0 gen_boolean)
list(GET gen_expression 1 gen_library)
if(${gen_boolean})
set(library "${gen_library}")
else()
continue()
endif()
elseif(library MATCHES "\\$<TARGET_NAME_IF_EXISTS:[^>]+>")
# Target-dependent generator expression found - consider parameter to be a CMake target identifier and check for
# target existence.
string(REGEX REPLACE "\\$<TARGET_NAME_IF_EXISTS:([^>]+)>" "\\1" gen_target "${library}")
if(TARGET ${gen_target})
set(library "${gen_target}")
else()
continue()
endif()
elseif(library MATCHES "\\$<.*Qt6::EntryPointPrivate>" OR library MATCHES "\\$<.*Qt6::QDarwin.+PermissionPlugin>")
# Known Qt6-specific generator expression, ignored.
continue()
else()
# Unknown or unimplemented generator expression found - abort script run to either add to ignore list or
# implement detection.
message(FATAL_ERROR "${library} is an unsupported generator expression for linked libraries.")
endif()
endif()
message(DEBUG "[${nested_depth}] Found ${library}...")
if(NOT library IN_LIST ${var_FOUND_VAR})
list(APPEND found_libraries ${library})
# Enter recursive branch
find_dependencies(TARGET ${library} FOUND_VAR ${var_FOUND_VAR})
endif()
endforeach()
if(NOT is_root)
set(found_libraries
${found_libraries}
PARENT_SCOPE)
# Exit recursive branch
return()
endif()
list(REMOVE_DUPLICATES found_libraries)
list(APPEND ${var_FOUND_VAR} ${found_libraries})
set(${var_FOUND_VAR}
${${var_FOUND_VAR}}
PARENT_SCOPE)
endfunction()
# find_qt_plugins: Find and add Qt plugin libraries associated with Qt component to target
function(find_qt_plugins)
set(oneValueArgs COMPONENT TARGET FOUND_VAR)
cmake_parse_arguments(var "" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
string(REPLACE "::" ";" library_tuple "${var_COMPONENT}")
list(GET library_tuple 0 library_namespace)
list(GET library_tuple 1 library_name)
if(NOT ${library_namespace} MATCHES "Qt[56]?")
message(FATAL_ERROR "'find_qt_plugins' has to be called with a valid target from the Qt, Qt5, or Qt6 namespace.")
endif()
list(
APPEND
qt_plugins_Core
platforms
printsupport
styles
imageformats
iconengines)
list(APPEND qt_plugins_Gui platforminputcontexts virtualkeyboard)
list(APPEND qt_plugins_Network bearer)
list(APPEND qt_plugins_Sql sqldrivers)
list(APPEND qt_plugins_Multimedia mediaservice audio)
list(APPEND qt_plugins_3dRender sceneparsers geometryloaders)
list(APPEND qt_plugins_3dQuickRender renderplugins)
list(APPEND qt_plugins_Positioning position)
list(APPEND qt_plugins_Location geoservices)
list(APPEND qt_plugins_TextToSpeech texttospeech)
list(APPEND qt_plugins_WebView webview)
if(qt_plugins_${library_name})
get_target_property(library_location ${var_COMPONENT} IMPORTED_LOCATION)
get_target_property(is_framework ${var_COMPONENT} FRAMEWORK)
if(is_framework)
# Resolve Qt plugin location relative to framework binary location on macOS
set(plugins_location "../../../../../plugins")
cmake_path(ABSOLUTE_PATH plugins_location BASE_DIRECTORY "${library_location}" NORMALIZE)
else()
# Resolve Qt plugin location relative to dynamic library location
set(plugins_location "../../plugins")
cmake_path(ABSOLUTE_PATH plugins_location BASE_DIRECTORY "${library_location}" NORMALIZE)
endif()
foreach(plugin IN ITEMS ${qt_plugins_${library_name}})
if(NOT plugin IN_LIST plugins_list)
if(EXISTS "${plugins_location}/${plugin}")
# Gather all .dll or .dylib files in given plugin subdirectory
file(
GLOB plugin_libraries
RELATIVE "${plugins_location}/${plugin}"
"${plugins_location}/${plugin}/*.dylib" "${plugins_location}/${plugin}/*.dll")
message(DEBUG "Found Qt plugin ${plugin} libraries: ${plugin_libraries}")
foreach(plugin_library IN ITEMS ${plugin_libraries})
set(plugin_full_path "${plugins_location}/${plugin}/${plugin_library}")
list(APPEND plugins_list ${plugin_full_path})
endforeach()
endif()
endif()
endforeach()
endif()
set(${var_FOUND_VAR}
${plugins_list}
PARENT_SCOPE)
endfunction()
# target_export: Helper function to export target as CMake package
function(target_export target)
if(NOT DEFINED exclude_variant)
set(exclude_variant EXCLUDE_FROM_ALL)
endif()
get_target_property(is_framework ${target} FRAMEWORK)
if(is_framework)
set(package_destination "Frameworks/${target}.framework/Resources/cmake")
set(include_destination "Frameworks/${target}.framework/Headers")
else()
set(package_destination "${OBS_CMAKE_DESTINATION}/${target}")
set(include_destination "${OBS_INCLUDE_DESTINATION}")
endif()
install(
TARGETS ${target}
EXPORT ${target}Targets
RUNTIME DESTINATION "${OBS_EXECUTABLE_DESTINATION}"
COMPONENT Development
${exclude_variant}
LIBRARY DESTINATION "${OBS_LIBRARY_DESTINATION}"
COMPONENT Development
${exclude_variant}
ARCHIVE DESTINATION "${OBS_LIBRARY_DESTINATION}"
COMPONENT Development
${exclude_variant}
FRAMEWORK DESTINATION Frameworks
COMPONENT Development
${exclude_variant}
INCLUDES
DESTINATION "${include_destination}"
PUBLIC_HEADER
DESTINATION "${include_destination}"
COMPONENT Development
${exclude_variant})
get_target_property(obs_public_headers ${target} OBS_PUBLIC_HEADERS)
if(obs_public_headers)
foreach(header IN LISTS obs_public_headers)
cmake_path(GET header PARENT_PATH header_dir)
if(header_dir)
if(NOT ${header_dir} IN_LIST header_dirs)
list(APPEND header_dirs ${header_dir})
endif()
list(APPEND headers_${header_dir} ${header})
else()
list(APPEND headers ${header})
endif()
endforeach()
foreach(header_dir IN LISTS header_dirs)
install(
FILES ${headers_${header_dir}}
DESTINATION "${include_destination}/${header_dir}"
COMPONENT Development
${exclude_variant})
endforeach()
if(headers)
install(
FILES ${headers}
DESTINATION "${include_destination}"
COMPONENT Development
${exclude_variant})
endif()
endif()
if(target STREQUAL libobs AND NOT EXISTS "${include_destination}/obsconfig.h")
install(
FILES "${CMAKE_BINARY_DIR}/config/obsconfig.h"
DESTINATION "${include_destination}"
COMPONENT Development
${exclude_variant})
endif()
message(DEBUG "Generating export header for target ${target} as ${target}_EXPORT.h...")
include(GenerateExportHeader)
generate_export_header(${target} EXPORT_FILE_NAME "${target}_EXPORT.h")
target_sources(${target} PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/${target}_EXPORT.h>)
set_property(
TARGET ${target}
APPEND
PROPERTY PUBLIC_HEADER "${target}_EXPORT.h")
set(TARGETS_EXPORT_NAME ${target}Targets)
message(
DEBUG
"Generating CMake package configuration file ${target}Config.cmake with targets file ${TARGETS_EXPORT_NAME}...")
include(CMakePackageConfigHelpers)
configure_package_config_file(cmake/${target}Config.cmake.in ${target}Config.cmake
INSTALL_DESTINATION "${package_destination}")
message(DEBUG "Generating CMake package version configuration file ${target}ConfigVersion.cmake...")
write_basic_package_version_file(
"${target}ConfigVersion.cmake"
VERSION ${OBS_VERSION_CANONICAL}
COMPATIBILITY SameMajorVersion)
export(
EXPORT ${target}Targets
FILE "${TARGETS_EXPORT_NAME}.cmake"
NAMESPACE OBS::)
export(PACKAGE ${target})
install(
EXPORT ${TARGETS_EXPORT_NAME}
FILE ${TARGETS_EXPORT_NAME}.cmake
NAMESPACE OBS::
DESTINATION "${package_destination}"
COMPONENT Development
${exclude_variant})
install(
FILES "${CMAKE_CURRENT_BINARY_DIR}/${target}Config.cmake" "${CMAKE_CURRENT_BINARY_DIR}/${target}ConfigVersion.cmake"
DESTINATION "${package_destination}"
COMPONENT Development
${exclude_variant})
endfunction()
# check_uuid: Helper function to check for valid UUID
function(check_uuid uuid_string return_value)
set(valid_uuid TRUE)
set(uuid_token_lengths 8 4 4 4 12)
set(token_num 0)
string(REPLACE "-" ";" uuid_tokens ${uuid_string})
list(LENGTH uuid_tokens uuid_num_tokens)
if(uuid_num_tokens EQUAL 5)
message(DEBUG "UUID ${uuid_string} is valid with 5 tokens.")
foreach(uuid_token IN LISTS uuid_tokens)
list(GET uuid_token_lengths ${token_num} uuid_target_length)
string(LENGTH "${uuid_token}" uuid_actual_length)
if(uuid_actual_length EQUAL uuid_target_length)
string(REGEX MATCH "[0-9a-fA-F]+" uuid_hex_match ${uuid_token})
if(NOT uuid_hex_match STREQUAL uuid_token)
set(valid_uuid FALSE)
break()
endif()
else()
set(valid_uuid FALSE)
break()
endif()
math(EXPR token_num "${token_num}+1")
endforeach()
else()
set(valid_uuid FALSE)
endif()
message(DEBUG "UUID ${uuid_string} valid: ${valid_uuid}")
set(${return_value}
${valid_uuid}
PARENT_SCOPE)
endfunction()
# legacy_check: Checks if new CMake framework was not enabled and load legacy rules instead
macro(legacy_check)
if(OBS_CMAKE_VERSION VERSION_LESS 3.0.0)
message(FATAL_ERROR "CMake version changed between CMakeLists.txt.")
endif()
endmacro()
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