* Use configuration suffix when installing icons
* Include configuration name suffix in application name
This way differently configured versions of the same applications should be
co-installable within the same prefix. That is useful to install the Qt 6
version of an application alongside the Qt 5 version.
* Remove PNG_ICON_CROP
* Not sure how that was supposed to be useful because even for projects
without PNG_ICON_NO_CROP it does not make much sense
* Test multiple sizes to determine the PNG path automatically
* Locate PNG in basic config so the path is also automatically determined
for the macOS bundle as well
* Log status message when ffmpeg/png2icns are not available
* Format CMake code more nicely
Rely on generator expressions to get the correct filename. This has never
worked because WINDOWS_EXT was usually only set after WindowsResources has
been included.
* Also enable the "lib" prefix which CMake would add by default again; it
has only been removed to preserve compatibility with qmake when switching
from qmake to CMake
* None of these changes are enabled by default to preserve compatibility
The double quotes need to be removed from the doc string. Otherwise, Qt
Creator creates a line like
```
set("EXCLUDE_TESTS_FROM_ALL" "OFF" CACHE "BOOL" "specifies whether to exclude tests from the "all" target (enabled by default)" FORCE)
```
in its `qtcsettings.cmake` which doesn't work because the escaping is
missing.
Some build system macros might pass CMAKE_INSTALL_LIBDIR/LIB_INSTALL_DIR
and LIB_SUFFIX at the same time. I suppose in this case the LIB_SUFFIX
should not be added if it is already present to avoid `lib6464`.
Seems like cmake-format 0.6.7 only applies CLI options
to the first file anymore. So in order to have the options
applied to all files and not just the first one just
invoke it for each file individually.
Use-case is explained in the documentation. This implementation
takes care that the additional libs actually occur at the end
of the linker line despite the use of imported targets with
INTERFACE_LINK_LIBRARIES. It might still not be perfect but
sufficient for current use-cases.
Martchus