Before this change, installing the example with a multi-config
generator failed with
CMake Error at cmake_install.cmake:123 (include):
include could not find requested file:
<build_dir>/.qt/deploy_calendarPlugin_49e753a159-$<CONFIG>.cmake
When configuring the project, cmake mentions the following warning:
CMake Warning (dev) in CMakeLists.txt:
Policy CMP0087 is not set: Install CODE|SCRIPT allow the use of
generator expressions. Run "cmake --help-policy CMP0087" for policy
details.
This happens because the specified minimum cmake version of the project
was 3.5, so the above policy was not enabled, and the generator
expressions we use for the deployment api failed to be evaluated.
Fix the minimum version to be 3.16.
Clean up the project a bit to be in line with our other examples.
Use qt_internal_add_example, remove redundant find_package(Qt) calls,
remove redundant project() and cmake_minimum_required() calls, use
target_include_directories.
Amends f071d4ee8abf6fd0f1b6e187b4e99fa6fad7b642
Fixes: QTBUG-127616
Task-number: QTBUG-115200
Change-Id: I06ca1d38a8e5e7cb18ade205616a603db98a17be
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
This example demonstrates how to write a calendar backend plugin
using a low-level API for extending Qt applications.
Fixes: QTBUG-115200
Change-Id: If0b7f2552ba8c2203acdcbff238fb0ffa7cfca55
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
