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QtBuildPathsHelpers.cmake
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# Copyright (C) 2023 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause
macro(qt_internal_setup_default_install_prefix)
# Detect non-prefix builds: either when the qtbase install prefix is set to the binary dir
# or when a developer build is explicitly enabled and no install prefix (or staging prefix)
# is specified.
# This detection only happens when building qtbase, and later is propagated via the generated
# QtBuildInternalsExtra.cmake file.
if(PROJECT_NAME STREQUAL "QtBase" AND NOT QT_INTERNAL_BUILD_STANDALONE_PARTS)
if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
# Handle both FEATURE_ and QT_FEATURE_ cases when they are specified on the command line
# explicitly. It's possible for one to be set, but not the other, because
# qtbase/configure.cmake is not processed by this point.
if((FEATURE_developer_build
OR QT_FEATURE_developer_build
OR FEATURE_no_prefix
OR QT_FEATURE_no_prefix
)
AND NOT CMAKE_STAGING_PREFIX)
# Handle non-prefix builds by setting the CMake install prefix to point to qtbase's
# build dir. While building another repo (like qtsvg) the CMAKE_PREFIX_PATH should
# be set on the command line to point to the qtbase build dir.
set(__qt_default_prefix "${QtBase_BINARY_DIR}")
else()
if(CMAKE_HOST_WIN32)
set(__qt_default_prefix "C:/Qt/")
else()
set(__qt_default_prefix "/usr/local/")
endif()
string(APPEND __qt_default_prefix
"Qt-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}")
endif()
set(CMAKE_INSTALL_PREFIX ${__qt_default_prefix} CACHE PATH
"Install path prefix, prepended onto install directories." FORCE)
unset(__qt_default_prefix)
endif()
if(CMAKE_STAGING_PREFIX)
set(__qt_prefix "${CMAKE_STAGING_PREFIX}")
else()
set(__qt_prefix "${CMAKE_INSTALL_PREFIX}")
endif()
if(__qt_prefix STREQUAL QtBase_BINARY_DIR)
set(__qt_will_install_value OFF)
else()
set(__qt_will_install_value ON)
endif()
set(QT_WILL_INSTALL ${__qt_will_install_value} CACHE BOOL
"Boolean indicating if doing a Qt prefix build (vs non-prefix build)." FORCE)
unset(__qt_prefix)
unset(__qt_will_install_value)
endif()
endmacro()
function(qt_internal_setup_build_and_install_paths)
# Compute the values of QT_BUILD_DIR, QT_INSTALL_DIR, QT_CONFIG_BUILD_DIR, QT_CONFIG_INSTALL_DIR
# taking into account whether the current build is a prefix build or a non-prefix build,
# and whether it is a superbuild or non-superbuild.
# A third case is when another module or standalone tests/examples are built against a
# super-built Qt.
# The layout for the third case is the same as for non-superbuilds.
#
# These values should be prepended to file paths in commands or properties,
# in order to correctly place generated Config files, generated Targets files,
# executables / libraries, when copying / installing files, etc.
#
# The build dir variables will always be absolute paths.
# The QT_INSTALL_DIR variable will have a relative path in a prefix build,
# which means that it can be empty, so use qt_join_path to prevent accidental absolute paths.
if(QT_SUPERBUILD)
# In this case, we always copy all the build products in qtbase/{bin,lib,...}
if(QT_WILL_INSTALL)
set(QT_BUILD_DIR "${QtBase_BINARY_DIR}")
set(QT_INSTALL_DIR "")
else()
if("${CMAKE_STAGING_PREFIX}" STREQUAL "")
set(QT_BUILD_DIR "${QtBase_BINARY_DIR}")
set(QT_INSTALL_DIR "${QtBase_BINARY_DIR}")
else()
set(QT_BUILD_DIR "${CMAKE_STAGING_PREFIX}")
set(QT_INSTALL_DIR "${CMAKE_STAGING_PREFIX}")
endif()
endif()
else()
if(QT_WILL_INSTALL)
# In the usual prefix build case, the build dir is the current module build dir,
# and the install dir is the prefix, so we don't set it.
set(QT_BUILD_DIR "${CMAKE_BINARY_DIR}")
set(QT_INSTALL_DIR "")
else()
# When doing a non-prefix build, both the build dir and install dir are the same,
# pointing to the qtbase build dir.
set(QT_BUILD_DIR "${QT_STAGING_PREFIX}")
set(QT_INSTALL_DIR "${QT_BUILD_DIR}")
endif()
endif()
set(__config_path_part "${INSTALL_LIBDIR}/cmake")
set(QT_CONFIG_BUILD_DIR "${QT_BUILD_DIR}/${__config_path_part}")
set(QT_CONFIG_INSTALL_DIR "${QT_INSTALL_DIR}")
if(QT_CONFIG_INSTALL_DIR)
string(APPEND QT_CONFIG_INSTALL_DIR "/")
endif()
string(APPEND QT_CONFIG_INSTALL_DIR ${__config_path_part})
set(QT_BUILD_DIR "${QT_BUILD_DIR}" PARENT_SCOPE)
set(QT_INSTALL_DIR "${QT_INSTALL_DIR}" PARENT_SCOPE)
set(QT_CONFIG_BUILD_DIR "${QT_CONFIG_BUILD_DIR}" PARENT_SCOPE)
set(QT_CONFIG_INSTALL_DIR "${QT_CONFIG_INSTALL_DIR}" PARENT_SCOPE)
endfunction()
function(qt_configure_process_path name default docstring)
# Values are computed once for qtbase, and then exported and reused for other projects.
if(NOT PROJECT_NAME STREQUAL "QtBase")
return()
endif()
# No value provided, set the default.
# Make sure to process the paths even for the defaults to ensure we have canonicalized paths
# on the first configure run and thus don't regenerate qconfig.cpp on a subsequent
# configure run when the paths might become different if we didn't do it on first run.
# e.g. './plugins' would get turned to 'plugins'.
if(NOT DEFINED "${name}")
set("${name}" "${default}")
endif()
get_filename_component(given_path_as_abs "${${name}}" ABSOLUTE BASE_DIR
"${CMAKE_INSTALL_PREFIX}")
file(RELATIVE_PATH rel_path "${CMAKE_INSTALL_PREFIX}"
"${given_path_as_abs}")
# If absolute path given, check that it's inside the prefix (error out if not).
# If relative path given, it's relative to the install prefix (rather than the binary dir,
# which is what qmake does for some reason).
# In both cases, store the value as a relative path, unless we're processing INSTALL_SYSCONFDIR
# which should stay abslute.
if("${rel_path}" STREQUAL "")
# file(RELATIVE_PATH) returns an empty string if the given absolute paths are equal,
# so manually set it to '.'
set(new_value ".")
elseif(rel_path MATCHES "^\.\./")
# INSTALL_SYSCONFDIR is allowed to be outside the prefix.
if(NOT name STREQUAL "INSTALL_SYSCONFDIR")
message(FATAL_ERROR
"Path component '${name}' is outside computed install prefix: ${rel_path} ")
endif()
# Keep the absolute path.
set(new_value "${${name}}")
else()
# Use the canonicalized path.
set(new_value "${rel_path}")
endif()
set("${name}" "${new_value}" CACHE STRING "${docstring}" FORCE)
endfunction()
macro(qt_internal_setup_configure_install_paths)
# Install locations:
qt_configure_process_path(INSTALL_BINDIR "bin" "Executables [PREFIX/bin]")
qt_configure_process_path(INSTALL_INCLUDEDIR "include" "Header files [PREFIX/include]")
qt_configure_process_path(INSTALL_LIBDIR "lib" "Libraries [PREFIX/lib]")
qt_configure_process_path(INSTALL_MKSPECSDIR "mkspecs" "Mkspecs files [PREFIX/mkspecs]")
qt_configure_process_path(INSTALL_ARCHDATADIR "." "Arch-dependent data [PREFIX]")
qt_configure_process_path(INSTALL_PLUGINSDIR
"${INSTALL_ARCHDATADIR}/plugins"
"Plugins [ARCHDATADIR/plugins]")
if(NOT INSTALL_MKSPECSDIR MATCHES "(^|/)mkspecs")
message(FATAL_ERROR "INSTALL_MKSPECSDIR must end with '/mkspecs'")
endif()
if (WIN32)
set(_default_libexec "${INSTALL_ARCHDATADIR}/bin")
else()
set(_default_libexec "${INSTALL_ARCHDATADIR}/libexec")
endif()
qt_configure_process_path(
INSTALL_LIBEXECDIR
"${_default_libexec}"
"Helper programs [ARCHDATADIR/bin on Windows, ARCHDATADIR/libexec otherwise]")
qt_configure_process_path(INSTALL_QMLDIR
"${INSTALL_ARCHDATADIR}/qml"
"QML imports [ARCHDATADIR/qml]")
qt_configure_process_path(INSTALL_DATADIR "." "Arch-independent data [PREFIX]")
qt_configure_process_path(INSTALL_DOCDIR "${INSTALL_DATADIR}/doc" "Documentation [DATADIR/doc]")
qt_configure_process_path(INSTALL_TRANSLATIONSDIR "${INSTALL_DATADIR}/translations"
"Translations [DATADIR/translations]")
if(APPLE)
set(QT_DEFAULT_SYS_CONF_DIR "/Library/Preferences/Qt")
else()
set(QT_DEFAULT_SYS_CONF_DIR "etc/xdg")
endif()
qt_configure_process_path(
INSTALL_SYSCONFDIR
"${QT_DEFAULT_SYS_CONF_DIR}"
"Settings used by Qt programs [PREFIX/etc/xdg]/[/Library/Preferences/Qt]")
qt_configure_process_path(INSTALL_EXAMPLESDIR "examples" "Examples [PREFIX/examples]")
qt_configure_process_path(INSTALL_TESTSDIR "tests" "Tests [PREFIX/tests]")
qt_configure_process_path(INSTALL_DESCRIPTIONSDIR
"${INSTALL_ARCHDATADIR}/modules"
"Module description files directory")
qt_configure_process_path(INSTALL_SBOMDIR "${INSTALL_ARCHDATADIR}/sbom"
"SBOM [PREFIX/sbom]")
# INSTALL_PUBLICBINDIR is processed only if it is not empty
# See usage in qt_internal_generate_user_facing_tools_info
if(NOT "${INSTALL_PUBLICBINDIR}" STREQUAL "")
# A default value is not needed because it is always manually defined
# but as per the documentation it is typically `bin`
qt_configure_process_path(INSTALL_PUBLICBINDIR "bin"
"Symlinked user-facing executables")
endif()
endmacro()
macro(qt_internal_set_cmake_install_libdir)
# Ensure that GNUInstallDirs's CMAKE_INSTALL_LIBDIR points to the same lib dir that Qt was
# configured with. Currently this is important for QML plugins, which embed an rpath based
# on that value.
set(CMAKE_INSTALL_LIBDIR "${INSTALL_LIBDIR}")
endmacro()
macro(qt_internal_set_qt_cmake_dir)
set(QT_CMAKE_DIR "${CMAKE_CURRENT_LIST_DIR}")
endmacro()
macro(qt_internal_set_qt_apple_support_files_path)
# This is analogous to what we have in QtConfig.cmake.in. It's copied here so that iOS
# tests can be built in tree.
if(APPLE)
if(NOT CMAKE_SYSTEM_NAME OR CMAKE_SYSTEM_NAME STREQUAL "Darwin")
set(__qt_internal_cmake_apple_support_files_path "${QT_CMAKE_DIR}/macos")
elseif(CMAKE_SYSTEM_NAME STREQUAL "iOS")
set(__qt_internal_cmake_apple_support_files_path "${QT_CMAKE_DIR}/ios")
elseif(CMAKE_SYSTEM_NAME STREQUAL "visionOS")
set(__qt_internal_cmake_apple_support_files_path "${QT_CMAKE_DIR}/visionos")
endif()
endif()
endmacro()
macro(qt_internal_set_qt_staging_prefix)
if(NOT "${CMAKE_STAGING_PREFIX}" STREQUAL "")
set(QT_STAGING_PREFIX "${CMAKE_STAGING_PREFIX}")
else()
set(QT_STAGING_PREFIX "${CMAKE_INSTALL_PREFIX}")
endif()
endmacro()
macro(qt_internal_setup_paths_and_prefixes)
qt_internal_setup_configure_install_paths()
qt_internal_set_qt_staging_prefix()
# Depends on QT_STAGING_PREFIX being set.
qt_internal_setup_build_and_install_paths()
qt_get_relocatable_install_prefix(QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX)
# Depends on INSTALL_LIBDIR being set.
qt_internal_set_cmake_install_libdir()
qt_internal_set_qt_cmake_dir()
qt_internal_set_qt_apple_support_files_path()
endmacro()