// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GFDL-1.3-no-invariants-only

/*!
\page qt_add_resources.html
\ingroup cmake-commands-qtcore

\title qt_add_resources
\target qt6_add_resources

\summary {Compiles binary resources into source code.}

\include cmake-find-package-core.qdocinc

\section1 Synopsis

\badcode
qt_add_resources(<VAR> file1.qrc [file2.qrc ...]
                  [OPTIONS ...])
\endcode

\versionlessCMakeCommandsNote qt6_add_resources()

Since 6.0:

\badcode
qt_add_resources(<TARGET> <RESOURCE_NAME>
                  [PREFIX <PATH>]
                  [LANG <LANGUAGE>]
                  [BASE <PATH>]
                  [OUTPUT_TARGETS <VARIABLE_NAME>]
                  [FILES ...] [OPTIONS ...])
\endcode

\versionlessCMakeCommandsNote qt6_add_resources()

\section1 Description

To add resources, you can pass either a variable name or a target as the first
argument of the command.

When passing a variable name as first argument, \c qt_add_resources creates
source code from Qt resource files using the \l{Resource Compiler (rcc)}. Paths
to the generated source files are added to \c{<VAR>}.

When passing a target as first argument, the function creates a resource with
the name \c{RESOURCE_NAME}, containing the specified \c{FILES}. The resource is
automatically linked into \c{TARGET}.

For embedding bigger resources, see \l qt_add_big_resources.

See \l{The Qt Resource System} for a general description of Qt resources.

\section1 Arguments of the target-based variant

\c PREFIX specifies a path prefix under which all files of this resource are
accessible from C++ code. This corresponds to the XML attribute \c prefix of the
\c .qrc file format. If \c PREFIX is not given, the target property
\l{cmake-target-property-QT_RESOURCE_PREFIX}{QT_RESOURCE_PREFIX} is used.

\c LANG specifies the locale of this resource. This corresponds to the XML
attribute \c lang of the \c .qrc file format.

\c BASE is a path prefix that denotes the root point of the file's alias. For
example, if \c BASE is \c{"assets"} and \c FILES is
\c{"assets/images/logo.png"}, then the alias of that file is
\c{"images/logo.png"}.

Alias settings for files need to be set via the \c QT_RESOURCE_ALIAS source file
property.

When using this command with static libraries, one or more special targets will
be generated. Should you wish to perform additional processing on these targets,
pass a variable name to the \c OUTPUT_TARGETS parameter. The \c qt_add_resources
function stores the names of the special targets in the specified variable.

\section1 Arguments of both variants

You can set additional \c{OPTIONS} that should be added to the \c{rcc} calls.
You can find possible options in the \l{rcc}{rcc documentation}.

\section1 Examples

Variable variant, using a .qrc file:
\snippet cmake-macros/examples.cmake qt_add_resources

Target variant, using immediate resources:
\snippet cmake-macros/examples.cmake qt_add_resources_target

\section1 Caveats

When adding multiple resources, \c{RESOURCE_NAME} must be unique across all
resources linked into the final target.

This especially affects static builds. There, the same resource name in
different static libraries conflict in the consuming target.
*/
