Allow to build examples as standalone project

Create CMake config files which can be used from the very same CMake
project. These CMake config files simply do not create any targets,
controlled via the QT_NO_CREATE_TARGETS.

This patch also allows to build qtbase.git:examples as a standalone
project, against an already-built Qt.

Ran this:
  ag -s "QT " examples -l -0 | xargs -0 -n 1 .../util/cmake/pro2cmake.py --is-example

Task-number: QTBUG-74713
Change-Id: I44cce5a4048618b30f890c5b789592c227a8b47d
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>

6 files changed, 154 insertions, 231 deletions

diff --git a/examples/widgets/animation/animatedtiles/CMakeLists.txt b/examples/widgets/animation/animatedtiles/CMakeLists.txt
index 0af95adcf8..dacde5535c 100644
--- a/examples/widgets/animation/animatedtiles/CMakeLists.txt
+++ b/examples/widgets/animation/animatedtiles/CMakeLists.txt
@@ -1,26 +1,27 @@
 # Generated from animatedtiles.pro.
 
-#####################################################################
-## animatedtiles Binary:
-#####################################################################
+cmake_minimum_required(VERSION 3.14)
+project(animatedtiles LANGUAGES CXX)
 
-add_qt_executable(animatedtiles
-    GUI
-    OUTPUT_DIRECTORY "${INSTALL_EXAMPLESDIR}/widgets/animation/animatedtiles"
-    INSTALL_DIRECTORY "${INSTALL_EXAMPLESDIR}/widgets/animation/animatedtiles"
-    SOURCES
-        main.cpp
-    LIBRARIES
-        Qt::Widgets
-)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+set(CMAKE_AUTOUIC ON)
 
-# Resources:
-add_qt_resource(animatedtiles "animatedtiles" FILES
-    images/Time-For-Lunch-2.jpg
-    images/centered.png
-    images/ellipse.png
-    images/figure8.png
-    images/kinetic.png
-    images/random.png
-    images/tile.png)
+set(INSTALL_EXAMPLEDIR "examples")
 
+find_package(Qt5 COMPONENTS Widgets)
+
+add_executable(animatedtiles WIN32 MACOSX_BUNDLE
+    animatedtiles.qrc
+    main.cpp
+)
+target_link_libraries(animatedtiles PUBLIC
+    Qt::Widgets
+)
+
+install(TARGETS animatedtiles
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+)
diff --git a/examples/widgets/animation/easing/CMakeLists.txt b/examples/widgets/animation/easing/CMakeLists.txt
index b7444412a6..1500b11f3b 100644
--- a/examples/widgets/animation/easing/CMakeLists.txt
+++ b/examples/widgets/animation/easing/CMakeLists.txt
@@ -1,25 +1,30 @@
 # Generated from easing.pro.
 
-#####################################################################
-## easing Binary:
-#####################################################################
+cmake_minimum_required(VERSION 3.14)
+project(easing LANGUAGES CXX)
 
-add_qt_executable(easing
-    GUI
-    OUTPUT_DIRECTORY "${INSTALL_EXAMPLESDIR}/widgets/animation/easing"
-    INSTALL_DIRECTORY "${INSTALL_EXAMPLESDIR}/widgets/animation/easing"
-    SOURCES
-        animation.h
-        form.ui
-        main.cpp
-        window.cpp window.h
-    PUBLIC_LIBRARIES
-        Qt::Widgets
-    ENABLE_AUTOGEN_TOOLS
-        uic
-)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+set(CMAKE_AUTOUIC ON)
 
-# Resources:
-add_qt_resource(easing "easing" FILES
-    images/qt-logo.png)
+set(INSTALL_EXAMPLEDIR "examples")
 
+find_package(Qt5 COMPONENTS Widgets)
+
+add_executable(easing WIN32 MACOSX_BUNDLE
+    animation.h
+    easing.qrc
+    form.ui
+    main.cpp
+    window.cpp window.h
+)
+target_link_libraries(easing PUBLIC
+    Qt::Widgets
+)
+
+install(TARGETS easing
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+)
diff --git a/examples/widgets/animation/moveblocks/CMakeLists.txt b/examples/widgets/animation/moveblocks/CMakeLists.txt
index 5cbb8f4936..cc2b70af44 100644
--- a/examples/widgets/animation/moveblocks/CMakeLists.txt
+++ b/examples/widgets/animation/moveblocks/CMakeLists.txt
@@ -1,15 +1,26 @@
 # Generated from moveblocks.pro.
 
-#####################################################################
-## moveblocks Binary:
-#####################################################################
-
-add_qt_executable(moveblocks
-    GUI
-    OUTPUT_DIRECTORY "${INSTALL_EXAMPLESDIR}/widgets/animation/moveblocks"
-    INSTALL_DIRECTORY "${INSTALL_EXAMPLESDIR}/widgets/animation/moveblocks"
-    SOURCES
-        main.cpp
-    LIBRARIES
-        Qt::Widgets
+cmake_minimum_required(VERSION 3.14)
+project(moveblocks LANGUAGES CXX)
+
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+set(CMAKE_AUTOUIC ON)
+
+set(INSTALL_EXAMPLEDIR "examples")
+
+find_package(Qt5 COMPONENTS Widgets)
+
+add_executable(moveblocks WIN32 MACOSX_BUNDLE
+    main.cpp
+)
+target_link_libraries(moveblocks PUBLIC
+    Qt::Widgets
+)
+
+install(TARGETS moveblocks
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
 )
diff --git a/examples/widgets/animation/states/CMakeLists.txt b/examples/widgets/animation/states/CMakeLists.txt
index 52a9357789..a28995db99 100644
--- a/examples/widgets/animation/states/CMakeLists.txt
+++ b/examples/widgets/animation/states/CMakeLists.txt
@@ -1,25 +1,27 @@
 # Generated from states.pro.
 
-#####################################################################
-## states Binary:
-#####################################################################
+cmake_minimum_required(VERSION 3.14)
+project(states LANGUAGES CXX)
 
-add_qt_executable(states
-    GUI
-    OUTPUT_DIRECTORY "${INSTALL_EXAMPLESDIR}/widgets/animation/states"
-    INSTALL_DIRECTORY "${INSTALL_EXAMPLESDIR}/widgets/animation/states"
-    SOURCES
-        main.cpp
-    LIBRARIES
-        Qt::Widgets
-)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+set(CMAKE_AUTOUIC ON)
 
-# Resources:
-add_qt_resource(states "states" FILES
-    accessories-dictionary.png
-    akregator.png
-    digikam.png
-    help-browser.png
-    k3b.png
-    kchart.png)
+set(INSTALL_EXAMPLEDIR "examples")
 
+find_package(Qt5 COMPONENTS Widgets)
+
+add_executable(states WIN32 MACOSX_BUNDLE
+    main.cpp
+    states.qrc
+)
+target_link_libraries(states PUBLIC
+    Qt::Widgets
+)
+
+install(TARGETS states
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+)
diff --git a/examples/widgets/animation/stickman/CMakeLists.txt b/examples/widgets/animation/stickman/CMakeLists.txt
index f604598232..5cb2e86c48 100644
--- a/examples/widgets/animation/stickman/CMakeLists.txt
+++ b/examples/widgets/animation/stickman/CMakeLists.txt
@@ -1,29 +1,32 @@
 # Generated from stickman.pro.
 
-#####################################################################
-## stickman Binary:
-#####################################################################
+cmake_minimum_required(VERSION 3.14)
+project(stickman LANGUAGES CXX)
 
-add_qt_executable(stickman
-    GUI
-    OUTPUT_DIRECTORY "${INSTALL_EXAMPLESDIR}/widgets/animation/stickman"
-    INSTALL_DIRECTORY "${INSTALL_EXAMPLESDIR}/widgets/animation/stickman"
-    SOURCES
-        animation.cpp animation.h
-        graphicsview.cpp graphicsview.h
-        lifecycle.cpp lifecycle.h
-        main.cpp
-        node.cpp node.h
-        rectbutton.cpp rectbutton.h
-        stickman.cpp stickman.h
-    LIBRARIES
-        Qt::Widgets
-)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+set(CMAKE_AUTOUIC ON)
 
-# Resources:
-add_qt_resource(stickman "stickman" FILES
-    animations/chilling.bin
-    animations/dancing.bin
-    animations/dead.bin
-    animations/jumping.bin)
+set(INSTALL_EXAMPLEDIR "examples")
 
+find_package(Qt5 COMPONENTS Widgets)
+
+add_executable(stickman WIN32 MACOSX_BUNDLE
+    animation.cpp animation.h
+    graphicsview.cpp graphicsview.h
+    lifecycle.cpp lifecycle.h
+    main.cpp
+    node.cpp node.h
+    rectbutton.cpp rectbutton.h
+    stickman.cpp stickman.h stickman.qrc
+)
+target_link_libraries(stickman PUBLIC
+    Qt::Widgets
+)
+
+install(TARGETS stickman
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
+)
diff --git a/examples/widgets/animation/sub-attaq/CMakeLists.txt b/examples/widgets/animation/sub-attaq/CMakeLists.txt
index e7cb602e19..3260a5f75d 100644
--- a/examples/widgets/animation/sub-attaq/CMakeLists.txt
+++ b/examples/widgets/animation/sub-attaq/CMakeLists.txt
@@ -1,142 +1,43 @@
 # Generated from sub-attaq.pro.
 
-#####################################################################
-## sub-attaq Binary:
-#####################################################################
+cmake_minimum_required(VERSION 3.14)
+project(sub-attaq LANGUAGES CXX)
 
-add_qt_executable(sub-attaq
-    GUI
-    OUTPUT_DIRECTORY "${INSTALL_EXAMPLESDIR}/widgets/animation/sub-attaq"
-    INSTALL_DIRECTORY "${INSTALL_EXAMPLESDIR}/widgets/animation/sub-attaq"
-    SOURCES
-        animationmanager.cpp animationmanager.h
-        boat.cpp boat.h boat_p.h
-        bomb.cpp bomb.h
-        graphicsscene.cpp graphicsscene.h
-        main.cpp
-        mainwindow.cpp mainwindow.h
-        pixmapitem.cpp pixmapitem.h
-        progressitem.cpp progressitem.h
-        qanimationstate.cpp qanimationstate.h
-        states.cpp states.h
-        submarine.cpp submarine.h submarine_p.h
-        textinformationitem.cpp textinformationitem.h
-        torpedo.cpp torpedo.h
-    LIBRARIES
-        Qt::Widgets
-)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
+
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+set(CMAKE_AUTOUIC ON)
 
-# Resources:
-set_source_files_properties("pics/big/background.png"
-    PROPERTIES alias "big/background")
-set_source_files_properties("pics/big/boat.png"
-    PROPERTIES alias "big/boat")
-set_source_files_properties("pics/big/bomb.png"
-    PROPERTIES alias "big/bomb")
-set_source_files_properties("pics/big/explosion/boat/step1.png"
-    PROPERTIES alias "big/explosion/boat/step1")
-set_source_files_properties("pics/big/explosion/boat/step2.png"
-    PROPERTIES alias "big/explosion/boat/step2")
-set_source_files_properties("pics/big/explosion/boat/step3.png"
-    PROPERTIES alias "big/explosion/boat/step3")
-set_source_files_properties("pics/big/explosion/boat/step4.png"
-    PROPERTIES alias "big/explosion/boat/step4")
-set_source_files_properties("pics/big/explosion/submarine/step1.png"
-    PROPERTIES alias "big/explosion/submarine/step1")
-set_source_files_properties("pics/big/explosion/submarine/step2.png"
-    PROPERTIES alias "big/explosion/submarine/step2")
-set_source_files_properties("pics/big/explosion/submarine/step3.png"
-    PROPERTIES alias "big/explosion/submarine/step3")
-set_source_files_properties("pics/big/explosion/submarine/step4.png"
-    PROPERTIES alias "big/explosion/submarine/step4")
-set_source_files_properties("pics/big/submarine.png"
-    PROPERTIES alias "big/submarine")
-set_source_files_properties("pics/big/surface.png"
-    PROPERTIES alias "big/surface")
-set_source_files_properties("pics/big/torpedo.png"
-    PROPERTIES alias "big/torpedo")
-set_source_files_properties("pics/scalable/boat.svg"
-    PROPERTIES alias "boat")
-set_source_files_properties("pics/scalable/sub-attaq.svg"
-    PROPERTIES alias "all")
-set_source_files_properties("pics/scalable/submarine.svg"
-    PROPERTIES alias "submarine")
-set_source_files_properties("pics/scalable/torpedo.svg"
-    PROPERTIES alias "torpedo")
-set_source_files_properties("pics/small/background.png"
-    PROPERTIES alias "small/background")
-set_source_files_properties("pics/small/boat.png"
-    PROPERTIES alias "small/boat")
-set_source_files_properties("pics/small/bomb.png"
-    PROPERTIES alias "small/bomb")
-set_source_files_properties("pics/small/submarine.png"
-    PROPERTIES alias "small/submarine")
-set_source_files_properties("pics/small/surface.png"
-    PROPERTIES alias "small/surface")
-set_source_files_properties("pics/small/torpedo.png"
-    PROPERTIES alias "small/torpedo")
-set_source_files_properties("pics/welcome/logo-a.png"
-    PROPERTIES alias "logo-a")
-set_source_files_properties("pics/welcome/logo-a2.png"
-    PROPERTIES alias "logo-a2")
-set_source_files_properties("pics/welcome/logo-b.png"
-    PROPERTIES alias "logo-b")
-set_source_files_properties("pics/welcome/logo-dash.png"
-    PROPERTIES alias "logo-dash")
-set_source_files_properties("pics/welcome/logo-excl.png"
-    PROPERTIES alias "logo-excl")
-set_source_files_properties("pics/welcome/logo-q.png"
-    PROPERTIES alias "logo-q")
-set_source_files_properties("pics/welcome/logo-s.png"
-    PROPERTIES alias "logo-s")
-set_source_files_properties("pics/welcome/logo-t.png"
-    PROPERTIES alias "logo-t")
-set_source_files_properties("pics/welcome/logo-t2.png"
-    PROPERTIES alias "logo-t2")
-set_source_files_properties("pics/welcome/logo-u.png"
-    PROPERTIES alias "logo-u")
-add_qt_resource(sub-attaq "subattaq" PREFIX "/" FILES
-    data.xml
-    pics/big/background.png
-    pics/big/boat.png
-    pics/big/bomb.png
-    pics/big/explosion/boat/step1.png
-    pics/big/explosion/boat/step2.png
-    pics/big/explosion/boat/step3.png
-    pics/big/explosion/boat/step4.png
-    pics/big/explosion/submarine/step1.png
-    pics/big/explosion/submarine/step2.png
-    pics/big/explosion/submarine/step3.png
-    pics/big/explosion/submarine/step4.png
-    pics/big/submarine.png
-    pics/big/surface.png
-    pics/big/torpedo.png
-    pics/scalable/boat.svg
-    pics/scalable/sub-attaq.svg
-    pics/scalable/submarine.svg
-    pics/scalable/torpedo.svg
-    pics/small/background.png
-    pics/small/boat.png
-    pics/small/bomb.png
-    pics/small/submarine.png
-    pics/small/surface.png
-    pics/small/torpedo.png
-    pics/welcome/logo-a.png
-    pics/welcome/logo-a2.png
-    pics/welcome/logo-b.png
-    pics/welcome/logo-dash.png
-    pics/welcome/logo-excl.png
-    pics/welcome/logo-q.png
-    pics/welcome/logo-s.png
-    pics/welcome/logo-t.png
-    pics/welcome/logo-t2.png
-    pics/welcome/logo-u.png)
+set(INSTALL_EXAMPLEDIR "examples")
 
+find_package(Qt5 COMPONENTS Widgets)
+find_package(Qt5 COMPONENTS OpenGL) # special case
 
-## Scopes:
-#####################################################################
+add_executable(sub-attaq WIN32 MACOSX_BUNDLE
+    animationmanager.cpp animationmanager.h
+    boat.cpp boat.h boat_p.h
+    bomb.cpp bomb.h
+    graphicsscene.cpp graphicsscene.h
+    main.cpp
+    mainwindow.cpp mainwindow.h
+    pixmapitem.cpp pixmapitem.h
+    progressitem.cpp progressitem.h
+    qanimationstate.cpp qanimationstate.h
+    states.cpp states.h
+    subattaq.qrc
+    submarine.cpp submarine.h submarine_p.h
+    textinformationitem.cpp textinformationitem.h
+    torpedo.cpp torpedo.h
+)
+target_link_libraries(sub-attaq PUBLIC
+    Qt::Widgets
+)
+if (TARGET Qt::OpenGL)
+    target_link_libraries(sub-attaq PUBLIC Qt::OpenGL)
+endif()
 
-extend_target(sub-attaq CONDITION TARGET Qt::OpenGL
-    LIBRARIES
-        Qt::OpenGL
+install(TARGETS sub-attaq
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
 )