qt5base-lts/examples/qtconcurrent
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
..
imagescaling Improve the QtConcurrent ImageScaling example 2020-12-11 11:45:45 +01:00
map CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
progressdialog CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
runfunction CMake: Regenerate examples to set the WIN32_EXECUTABLE property 2020-10-27 12:49:39 +01:00
wordcount Forbid implicit conversions between QFuture and other types 2020-10-30 17:19:26 +01:00
CMakeLists.txt Build examples in isolated sub-builds using ExternalProject 2021-05-26 13:33:29 +02:00
qtconcurrent.pro Examples: Remove remains of wince 2017-07-14 17:30:51 +00:00
README Remove references to demos from docs. 2011-07-05 19:57:54 +02:00

Qt 4 extends Qt's support for multithreaded applications with an API for
concurrent programming which includes implementations of the well-known
map-reduce and filter-reduce algorithms.


Documentation for these examples can be found via the Examples
link in the main Qt documentation.