- Qt 6.9
- Qt Core
- CMake Commands in Qt6 Core
- qt_deploy_qt_conf
- Qt 6.9.3 Reference Documentation

# qt_deploy_qt_conf

Write a qt.conf file at deployment time.

The command is defined in the `Core` component of the `Qt6` package, which can be loaded like so:

     find_package(Qt6 REQUIRED COMPONENTS Core)

Unlike most other CMake commands provided by Qt, `qt_deploy_qt_conf()` can only be called from a deployment script. It cannot be called directly by the project.

This command was introduced in Qt 6.3.

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.

## Synopsis

     qt_deploy_qt_conf(file_path
         [PREFIX prefix]
         [DOC_DIR doc_dir]
         [HEADERS_DIR headers_dir]
         [LIB_DIR lib_dir]
         [LIBEXEC_DIR libexec_dir]
         [BIN_DIR bin_dir]
         [PLUGINS_DIR plugins_dir]
         [QML_DIR qml_dir]
         [ARCHDATA_DIR archdata_dir]
         [DATA_DIR data_dir]
         [TRANSLATIONS_DIR translations_dir]
         [EXAMPLES_DIR examples_dir]
         [TESTS_DIR test_dir]
         [SETTINGS_DIR settings_dir]
     )

## Description

Use this command when you need to generate a qt.conf file during deployment. The default value of any path supported by `qt.conf` can be overridden with the corresponding `..._DIR` option. The command will only write a path to the generated `qt.conf` file if it differs from the default value. The default values can be found at Overriding Paths.

The `file_path` argument expects an absolute path to the location where the `qt.conf` file should be written to. The QT_DEPLOY_PREFIX and QT_DEPLOY_BIN_DIR variables can be used to dynamically specify a path relative to the deployment binary directory, as shown in the example below. This helps avoid hard-coding an absolute path.

## Example

     # The following script must only be executed at install time
     qt_generate_deploy_script(
         OUTPUT_SCRIPT deploy_script
         CONTENT "
     qt_deploy_qt_conf(\"\${QT_DEPLOY_PREFIX}/\${QT_DEPLOY_BIN_DIR}/qt.conf\"
         DATA_DIR \"./custom_data_dir\"
         TRANSLATIONS_DIR \"./custom_translations_dir\"
     )
     ")

     install(SCRIPT ${deploy_script})

See also qt_generate_deploy_app_script() and qt_deploy_runtime_dependencies().