qtbase/examples/widgets
Craig Scott d97fd7af2b Build examples in isolated sub-builds using ExternalProject
Examples are intended to show how to build against an installed Qt.
Building them as part of the main build means the way the Qt targets
are defined and created are not representative of an end user's build.
By building them as separate projects using ExternalProject, we can
more closely replicate the intended audience's environment. This
should allow us to catch more problems earlier.

Having examples built as part of the main build also creates problems
with some static builds where a tool built by the main build is needed
during configure time. This happens with other repos like qtdeclarative
but not (currently) with qtbase. Converting the examples in qtbase to
be built using ExternalProject is intended as a demonstrator for how
other repos can do similar. Until other repos are converted, they will
continue to work as they did before, with examples as part of the main
build for non-static builds only.

The new build-externally behavior is only supported for non-prefix
builds with this change. Prefix builds will continue to use the old
non-external method. Support for building examples externally in
prefix builds will be a separate change.

Task-number: QTBUG-90820
Fixes: QTBUG-91068
Change-Id: I2304329940568dbdb7da18d54d5595ea7d8668bc
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
2021-05-26 13:33:29 +02:00
..
animation Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
desktop Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
dialogs Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
doc Rewrite the fetchmore example 2021-04-23 12:43:28 +00:00
draganddrop Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
effects Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
gallery CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
gestures Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
graphicsview Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
itemviews Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
layouts Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
mainwindows Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
painting Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
qnx/foreignwindows Use QList instead of QVector in statemachine 2020-07-06 14:06:13 +02:00
richtext Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
scroller Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
tools Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
touch Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
tutorials Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
widgets Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
windowcontainer CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
.prev_CMakeLists.txt CMake: Regenerate projects 2020-09-22 19:08:53 +02:00
CMakeLists.txt Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
widgets.pro Move QStateMachine from QtCore to QtScxml 2020-08-24 20:10:25 +02:00