Qt Widgets: Document CMake macros

Task-number: QTBUG-72159
Change-Id: Ib9fdf852583964cf07c4d26e0a6c74f0058e29f1
Reviewed-by: Kevin Funk <kevin.funk@kdab.com>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>

doc/global/externalsites/external-resources.qdoc

@@ -76,6 +76,11 @@
     \title CMake AUTORCC Documentation
 */
 
+/*!
+    \externalpage https://cmake.org/cmake/help/latest/manual/cmake-qt.7.html#autouic
+    \title CMake AUTOUIC Documentation
+*/
+
 /*!
     \externalpage https://cmake.org/cmake/help/latest/prop_tgt/LOCATION.html
     \title CMake LOCATION Documentation

src/widgets/doc/snippets/cmake-macros/examples.cmake

@@ -0,0 +1,5 @@
+#! [qt5_wrap_ui]
+set(SOURCES mainwindow.cpp main.cpp)
+qt5_wrap_ui(SOURCES mainwindow.ui)
+add_executable(myapp ${SOURCES})
+#! [qt5_wrap_ui]

src/widgets/doc/src/cmake-macros.qdoc

@@ -0,0 +1,60 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+\page qtwidgets-cmake-qt5-wrap-ui.html
+\ingroup cmake-macros-qtwidgets
+
+\title qt5_wrap_ui
+
+\brief Creates sources for \c{.ui} files.
+
+\section1 Synopsis
+
+\badcode
+qt5_wrap_ui(<VAR> ui_file1 [ui_file2 ...]
+             [OPTIONS ...])
+\endcode
+
+\section1 Description
+
+Creates rules for calling \l{uic}{User Interface Compiler (uic)} on the given
+\c{.ui} files. For each input file, an header file is generated in the build
+directory. The paths of the generated header files are added to\c{<VAR>}.
+
+\note This is a low-level macro. See the \l{CMake AUTOUIC Documentation} for a
+more convenient way to process \c{.ui} files with \c{uic}.
+
+\section1 Options
+
+You can set additional \c{OPTIONS} that should be added to the \c{uic} calls.
+You can find possible options in the \l{uic}{uic documentation}.
+
+\section1 Examples
+
+\snippet cmake-macros/examples.cmake qt5_wrap_ui
+*/