suyu/CMakeModules/DownloadExternals.cmake
Andrea Pappacoda cdb240f3d4
chore: make yuzu REUSE compliant
[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
2022-07-27 12:53:49 +02:00

34 lines
1.5 KiB
CMake

# SPDX-FileCopyrightText: 2017 yuzu Emulator Project
# SPDX-License-Identifier: GPL-2.0-or-later
# This function downloads a binary library package from our external repo.
# Params:
# remote_path: path to the file to download, relative to the remote repository root
# prefix_var: name of a variable which will be set with the path to the extracted contents
function(download_bundled_external remote_path lib_name prefix_var)
set(package_repo "no_platform")
set(package_extension "no_platform")
if (WIN32)
set(package_repo "ext-windows-bin/raw/master/")
set(package_extension ".7z")
elseif (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
set(package_repo "ext-linux-bin/raw/main/")
set(package_extension ".tar.xz")
else()
message(FATAL_ERROR "No package available for this platform")
endif()
set(package_url "https://github.com/yuzu-emu/${package_repo}")
set(prefix "${CMAKE_BINARY_DIR}/externals/${lib_name}")
if (NOT EXISTS "${prefix}")
message(STATUS "Downloading binaries for ${lib_name}...")
file(DOWNLOAD
${package_url}${remote_path}${lib_name}${package_extension}
"${CMAKE_BINARY_DIR}/externals/${lib_name}${package_extension}" SHOW_PROGRESS)
execute_process(COMMAND ${CMAKE_COMMAND} -E tar xf "${CMAKE_BINARY_DIR}/externals/${lib_name}${package_extension}"
WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/externals")
endif()
message(STATUS "Using bundled binaries at ${prefix}")
set(${prefix_var} "${prefix}" PARENT_SCOPE)
endfunction()