As described in
https://github.com/yuzu-emu/yuzu/pull/9395#discussion_r1047456172
checking for PKG_CONFIG_FOUND before calling pkg_search_module() is
unneeded, and some find modules (like FindFFmpeg.cmake) don't do this
already. Consequently, this patch removes these checks.
With this patch I've deleted a few find modules that are now unused
since the vcpkg transition, as the CMake code now forces CONFIG mode for
Catch2, fmt and nlohmann_json.
I've then simplified the lz4, opus, and zstd modules by exclusively
using pkg-config. They were using it already, but were ignoring the
result. Also, I believe that manually looking for libraries was required
for Conan to work, and it is thus not needed anymore.
Lastly, I believe that there is no platform that ships these system libs
without pkg-config/pkgconf, so requiring it should be fine.
As mentioned in the previous commit, `reuse lint` can be used to ensure
that copyright information is always present and up to date.
This adds a GitHub Action that does just that, using the official
fsfe/reuse-action
[REUSE] is a specification that aims at making file copyright
information consistent, so that it can be both human and machine
readable. It basically requires that all files have a header containing
copyright and licensing information. When this isn't possible, like
when dealing with binary assets, generated files or embedded third-party
dependencies, it is permitted to insert copyright information in the
`.reuse/dep5` file.
Oh, and it also requires that all the licenses used in the project are
present in the `LICENSES` folder, that's why the diff is so huge.
This can be done automatically with `reuse download --all`.
The `reuse` tool also contains a handy subcommand that analyzes the
project and tells whether or not the project is (still) compliant,
`reuse lint`.
Following REUSE has a few advantages over the current approach:
- Copyright information is easy to access for users / downstream
- Files like `dist/license.md` do not need to exist anymore, as
`.reuse/dep5` is used instead
- `reuse lint` makes it easy to ensure that copyright information of
files like binary assets / images is always accurate and up to date
To add copyright information of files that didn't have it I looked up
who committed what and when, for each file. As yuzu contributors do not
have to sign a CLA or similar I couldn't assume that copyright ownership
was of the "yuzu Emulator Project", so I used the name and/or email of
the commit author instead.
[REUSE]: https://reuse.software
Follow-up to 01cf05bc75
The AppStream file is mostly copied from the one already used by the
Flatpak yuzu build:
https://github.com/flathub/org.yuzu_emu.yuzu/blob/62fc225acfa0178ddf61be68ad9be60841077263/org.yuzu_emu.yuzu.metainfo.xml
As it already defines the application id as org.yuzu_emu.yuzu I renamed
the yuzu.desktop and yuzu.xml files so that they match.
I've also made some minor tweaks to it, like fixing the capitalization
of "yuzu", adding a few keys and sorting them as presented in the
documentation.
Lastly, I added PrefersNonDefaultGPU=true to the .desktop file so that
yuzu is launched with the dedicated graphics card on Linux.
Explicitly specifying an install destination is not needed anymore since
CMake 3.14.
By removing the hardcoded ${CMAKE_INSTALL_PREFIX}/bin it is also now
possible to override the install destination via the command line. For
example, you can now install yuzu to /usr/games with
-DCMAKE_INSTALL_BINDIR=games