An intended use case is to generate client-side and server-side code for
protocols shipped in the wayland-protocols package with qtwaylandscanner.

Png2Ico provides lower quality icons compared to icoutils as png2ico
predates the current icon standard.
Still lloking for png2ico prints
 * Png2Ico, Executable that converts a collection of PNG files into a Windows icon file, <https://www.winterdrache.de/freeware/png2ico/ or https://commits.kde.org/kdewin>

which confuses new users.

Based on https://phabricator.kde.org/D21695

Several KDE projects use taglib, so we really need to provide a proper
find module in ECM.

AFAIK taglib-config should not be portable, so we don't try to
run it on WIN32. See also:
https://invent.kde.org/network/kio-extras/-/commit/548f525f4308810888c85f42a570139029c40618

Summary:
This one is originally coming from Solid, but there are several more copies
in our repositories (plasma-desktop, kwin, powerdevil, etc).

Reviewers: cgiboudeaux

Reviewed By: cgiboudeaux

Subscribers: cgiboudeaux, kde-frameworks-devel, kde-buildsystem

Tags: #frameworks, #build_system

Differential Revision: https://phabricator.kde.org/D19486

Summary: Originally coming from KWin, but now also needed by qtbase.

Reviewers: cgiboudeaux

Reviewed By: cgiboudeaux

Subscribers: kossebau, apol, cgiboudeaux, kde-frameworks-devel, kde-buildsystem

Tags: #frameworks, #build_system

Differential Revision: https://phabricator.kde.org/D18943

Summary:
used by:

- knotification
- (possibly also knotifyconfig at some point)
- plasma-pa
- kmix

Reviewers: cgiboudeaux

Reviewed By: cgiboudeaux

Subscribers: aacid, apol, kde-frameworks-devel, kde-buildsystem

Tags: #frameworks, #build_system

Differential Revision: https://phabricator.kde.org/D18952

New users can use this module instead of adding a copy of the old FindExiv2.cmake module.

According to lxr, we have 8 copies of this module in different repositories (+kdelib4support and a playground repo).