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// Copyright (C) 2021 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only
/*!
\page qt_deploy_runtime_dependencies.html
\ingroup cmake-commands-qtcore
\title qt_deploy_runtime_dependencies
\target qt_deploy_runtime_dependencies
\summary {Deploy Qt plugins, Qt and non-Qt libraries needed by an executable.}
\include cmake-find-package-core.qdocinc
Unlike most other CMake commands provided by Qt, \c{qt_deploy_runtime_dependencies()}
can only be called from a deployment script. It cannot be called directly by the
project during the configure stage.
\cmakecommandsince 6.3
\preliminarycmakecommand
\note This command does not usually need to be called directly. It is used
internally by other higher level commands, but projects wishing to
implement more customized deployment logic may find it useful.
\section1 Synopsis
\badcode
qt_deploy_runtime_dependencies(
EXECUTABLE executable
[ADDITIONAL_EXECUTABLES files...]
[ADDITIONAL_LIBRARIES files...]
[ADDITIONAL_MODULES files...]
[GENERATE_QT_CONF]
[BIN_DIR bin_dir]
[LIB_DIR lib_dir]
[PLUGINS_DIR plugins_dir]
[QML_DIR qml_dir]
[VERBOSE]
[NO_OVERWRITE]
[NO_APP_STORE_COMPLIANCE]
)
\endcode
\section1 Description
When installing an application, it may be desirable to also install the
libraries and plugins it depends on. When the application is a macOS app bundle
or a Windows executable, \c{qt_deploy_runtime_dependencies()} can be called
from an install-time script to deploy those dependencies. It will install
non-system libraries (both Qt and those provided by the project), plus an
appropriate set of Qt plugins.
This command only considers runtime dependencies for which linking
relationships exist in the underlying binaries. It does not deploy QML modules,
see \l{qt_deploy_qml_imports()} for that.
\section1 Arguments
The \c{EXECUTABLE} option must be provided.
The \c{executable} argument should be a path to the executable file, relative to
the base install location. For example, \c{bin/MyApp.exe}, or more dynamically
\c{\${QT_DEPLOY_BIN_DIR}/$<TARGET_FILE_NAME:MyApp>}.
Specifying raw target names not wrapped in a generator epxression like
\c{<TARGET_FILE_NAME:>} is not supported.
For macOS app bundles, the \c{executable} argument should be a path to the
bundle directory, relative to the base install location.
For example \c{MyApp.app}, or more dynamically
\c{$<TARGET_FILE_NAME:MyApp>.app}.
Specifying raw target names not wrapped in a generator epxression like
\c{<TARGET_FILE_NAME:>} is not supported.
It may also be desirable to install dependencies for other binaries related to
the \c{executable}. For example, plugins provided by the project might have
further dependencies, but because those plugins won't be linked directly to the
executable, \c{qt_deploy_runtime_dependencies()} won't automatically discover
them. The \c{ADDITIONAL_EXECUTABLES}, \c{ADDITIONAL_LIBRARIES}, and
\c{ADDITIONAL_MODULES} options can be used to specify additional binaries
whose dependencies should also be deployed (installing the named binaries
themselves is still the project's responsibility). The naming of these keywords
follows CMake's conventions, so Qt plugins would be specified using
\c{ADDITIONAL_MODULES}.
Each value should be a path relative to the base install location. The values
can use generator expressions, same as with the \c{EXECUTABLE} option.
Specifying raw target names not wrapped in a generator epxression like
\c{<TARGET_FILE_NAME:>} is not supported.
When installing a Windows application, it is common to need a
\l{Using qt.conf}{qt.conf} file when following CMake's default install
directory structure. If the \c{GENERATE_QT_CONF} option is given, an appropriate
\c{qt.conf} file will be written to the same directory as the \c{executable}.
The paths in that \c{qt.conf} file will be based on the \c{CMAKE_INSTALL_xxxDIR}
variables, whose defaults are provided by CMake's \l{GNUInstallDirs} module.
You can override some of those defaults with the \c{BIN_DIR}, \c{LIB_DIR},
\c{PLUGINS_DIR}, and \c{QML_DIR} options, all of which are expected to be
relative to the base install location. A \c{qt.conf} file is always written if
\c{executable} is a macOS app bundle, regardless of whether or not
\c{GENERATE_QT_CONF} is provided. The \c{..._DIR} options are also ignored in
that case, since the directory layout of an app bundle is dictated by Apple's
requirements.
More verbose output about the deployment steps can be enabled by providing the
\c{VERBOSE} option. Alternatively, the \l{QT_ENABLE_VERBOSE_DEPLOYMENT}
variable can be set in the project before the first \c{find_package(Qt6)} call
to make deployment output verbose by default.
The \c{qt_deploy_runtime_dependencies()} command overwrites existing files by
default (some warnings may still be issued). Use the \c{NO_OVERWRITE} option
to prevent overwriting existing files. Note that this option currently only
affects macOS and Windows deployments.
By default, if \c{executable} is a macOS app bundle, only Qt plugins and Qt
libraries that comply with Apple's app store requirements are deployed. The
\c{NO_APP_STORE_COMPLIANCE} option can be given to disable that constraint.
\sa {qt6_generate_deploy_app_script}{qt_generate_deploy_app_script()},
qt_deploy_qt_conf(), qt_deploy_qml_imports()
\section1 Example
\include cmake-deploy-runtime-dependencies.qdocinc
*/
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