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>

1 files changed, 25 insertions, 75 deletions

diff --git a/examples/widgets/richtext/textedit/CMakeLists.txt b/examples/widgets/richtext/textedit/CMakeLists.txt
index 487f708b34..54689bae5b 100644
--- a/examples/widgets/richtext/textedit/CMakeLists.txt
+++ b/examples/widgets/richtext/textedit/CMakeLists.txt
@@ -1,83 +1,33 @@
 # Generated from textedit.pro.
 
-#####################################################################
-## textedit Binary:
-#####################################################################
+cmake_minimum_required(VERSION 3.14)
+project(textedit LANGUAGES CXX)
 
-add_qt_executable(textedit
-    GUI
-    OUTPUT_DIRECTORY "${INSTALL_EXAMPLESDIR}/widgets/richtext/textedit"
-    INSTALL_DIRECTORY "${INSTALL_EXAMPLESDIR}/widgets/richtext/textedit"
-    SOURCES
-        main.cpp
-        textedit.cpp textedit.h
-    PUBLIC_LIBRARIES
-        Qt::Widgets
-)
-
-# Resources:
-add_qt_resource(textedit "textedit" PREFIX "/" FILES
-    example.html
-    images/logo32.png
-    images/mac/checkbox-checked.png
-    images/mac/checkbox.png
-    images/mac/editcopy.png
-    images/mac/editcut.png
-    images/mac/editpaste.png
-    images/mac/editredo.png
-    images/mac/editundo.png
-    images/mac/exportpdf.png
-    images/mac/filenew.png
-    images/mac/fileopen.png
-    images/mac/fileprint.png
-    images/mac/filesave.png
-    images/mac/format-indent-less.png
-    images/mac/format-indent-more.png
-    images/mac/textbold.png
-    images/mac/textcenter.png
-    images/mac/textitalic.png
-    images/mac/textjustify.png
-    images/mac/textleft.png
-    images/mac/textright.png
-    images/mac/textunder.png
-    images/mac/zoomin.png
-    images/mac/zoomout.png
-    images/win/checkbox-checked.png
-    images/win/checkbox.png
-    images/win/editcopy.png
-    images/win/editcut.png
-    images/win/editpaste.png
-    images/win/editredo.png
-    images/win/editundo.png
-    images/win/exportpdf.png
-    images/win/filenew.png
-    images/win/fileopen.png
-    images/win/fileprint.png
-    images/win/filesave.png
-    images/win/format-indent-less.png
-    images/win/format-indent-more.png
-    images/win/textbold.png
-    images/win/textcenter.png
-    images/win/textitalic.png
-    images/win/textjustify.png
-    images/win/textleft.png
-    images/win/textright.png
-    images/win/textunder.png
-    images/win/zoomin.png
-    images/win/zoomout.png)
+set(CMAKE_INCLUDE_CURRENT_DIR ON)
 
+set(CMAKE_AUTOMOC ON)
+set(CMAKE_AUTORCC ON)
+set(CMAKE_AUTOUIC ON)
 
-#### Keys ignored in scope 1:.:.:textedit.pro:<TRUE>:
-# EXAMPLE_FILES = "textedit.qdoc"
-# TEMPLATE = "app"
+set(INSTALL_EXAMPLEDIR "examples")
 
-## Scopes:
-#####################################################################
+find_package(Qt5 COMPONENTS Widgets)
+find_package(Qt5 COMPONENTS PrintSupport) # special case
 
-extend_target(textedit CONDITION TARGET Qt::PrintSupport
-    PUBLIC_LIBRARIES
-        Qt::PrintSupport
+add_executable(textedit WIN32 MACOSX_BUNDLE
+    main.cpp
+    textedit.cpp textedit.h textedit.qrc
+)
+target_link_libraries(textedit PUBLIC
+    Qt::Widgets
+)
+# special case begin
+if (TARGET Qt::PrintSupport)
+    target_link_libraries(textedit PUBLIC Qt::PrintSupport)
+endif()
+# special case end
+
+install(TARGETS textedit
+    RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
+    BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
 )
-
-#### Keys ignored in scope 3:.:.:textedit.pro:build_all AND NOT build_pass:
-# CONFIG = "-build_all" "release"