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cmake_minimum_required(VERSION 3.15.0)
project(Qt
VERSION 6.0.0
DESCRIPTION "Qt Libraries"
HOMEPAGE_URL "https://qt.io/"
LANGUAGES CXX C ASM
)
# Required so we can call ctest from the root build directory
enable_testing()
set(qt_module_prop_prefix "__qt_prop_")
function(extract_git_submodules out_module_list)
set(modules "")
set(current_module "")
set(module_list "")
file(STRINGS "${CMAKE_CURRENT_SOURCE_DIR}/.gitmodules" lines)
foreach(line IN LISTS lines)
string(REGEX REPLACE "^\\[submodule \"([^\"]+)\"\\]$" "\\1" module ${line})
if (NOT module STREQUAL line)
list(APPEND modules ${modules})
set(current_module ${module})
list(APPEND module_list ${module})
else()
string(REGEX REPLACE "^\t([^ =]+) *=.*$" "\\1" prop ${line})
if (NOT prop STREQUAL line)
string(REGEX REPLACE "^[^=]+= *" "" value ${line})
string(REPLACE " " ";" value ${value})
set("${qt_module_prop_prefix}${current_module}_${prop}" "${value}" PARENT_SCOPE)
else()
message(FATAL_ERROR "Malformed line ${CMAKE_CURRENT_SOURCE_DIR}/.gitmodules: ${line}")
endif()
endif()
endforeach()
set(${out_module_list} ${module_list} PARENT_SCOPE)
endfunction()
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
if (NOT QT_BUILD_STANDALONE_TESTS)
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/qtbase/cmake")
endif()
include(ECMOptionalAddSubdirectory)
include(TopologicalSort)
# Use the CMake config files from the binary dir
list(APPEND CMAKE_PREFIX_PATH "${CMAKE_BINARY_DIR}")
# Also make sure the CMake config files do not recreate the already-existing targets
if (NOT QT_BUILD_STANDALONE_TESTS)
set(QT_NO_CREATE_TARGETS TRUE)
endif()
set(QT_SUPERBUILD TRUE)
# Get submodules list
extract_git_submodules(git_module_list)
foreach(module IN LISTS git_module_list)
# Prepare a list of dependencies to be fed into topological sort
set("${qt_module_prop_prefix}${module}_all_dependencies"
${${qt_module_prop_prefix}${module}_depends}
${${qt_module_prop_prefix}${module}_recommends}
${${qt_module_prop_prefix}${module}_serialize}
)
endforeach()
# Sort by dependencies
topological_sort(git_module_list "${qt_module_prop_prefix}" "_all_dependencies")
# Check for unknown modules
foreach(module IN LISTS git_module_list)
foreach(dep IN LISTS "${qt_module_prop_prefix}${module}_all_dependencies")
if (NOT dep IN_LIST git_module_list)
message(FATAL_ERROR "Module '${module}' depends on undeclared module '${dep}'")
endif()
endforeach()
endforeach()
# qtbase is always needed
list(REMOVE_ITEM git_module_list qtbase)
add_subdirectory(qtbase)
if (NOT QT_BUILD_STANDALONE_TESTS)
list(APPEND CMAKE_PREFIX_PATH "${QtBase_BINARY_DIR}")
endif()
foreach(module IN LISTS git_module_list)
ecm_optional_add_subdirectory(${module})
endforeach()
# Check for unmet dependencies
foreach(module IN LISTS git_module_list)
foreach(dep IN LISTS "${qt_module_prop_prefix}${module}_depends")
if (dep STREQUAL qtbase)
# Always available skip
continue()
endif()
if (DEFINED BUILD_${module} AND BUILD_${module})
if(NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${dep}/CMakeLists.txt")
message(FATAL_ERROR "Module '${module} depends on '${dep}', but ${deps}'s CMakeLists.txt couldn't be found.\n")
endif()
if(NOT BUILD_${dep})
message(FATAL_ERROR "Module '${module} depends on '${dep}', but ${deps} will not be built.\n")
endif()
endif()
endforeach()
endforeach()
if(NOT QT_BUILD_STANDALONE_TESTS)
# Display a summary of everything
include(QtBuildInformation)
qt_print_feature_summary()
qt_print_build_instructions()
endif()
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