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suyu/externals/find-modules/Findlz4.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

56 lines
1.6 KiB
CMake

# SPDX-FileCopyrightText: 2020 yuzu Emulator Project
# SPDX-License-Identifier: GPL-2.0-or-later
find_package(PkgConfig QUIET)
pkg_check_modules(PC_lz4 QUIET lz4)
find_path(lz4_INCLUDE_DIR
NAMES lz4.h
PATHS ${PC_lz4_INCLUDE_DIRS}
)
find_library(lz4_LIBRARY
NAMES lz4
PATHS ${PC_lz4_LIBRARY_DIRS}
)
if(lz4_INCLUDE_DIR)
file(STRINGS "${lz4_INCLUDE_DIR}/lz4.h" _lz4_version_lines
REGEX "#define[ \t]+LZ4_VERSION_(MAJOR|MINOR|RELEASE)")
string(REGEX REPLACE ".*LZ4_VERSION_MAJOR *\([0-9]*\).*" "\\1" _lz4_version_major "${_lz4_version_lines}")
string(REGEX REPLACE ".*LZ4_VERSION_MINOR *\([0-9]*\).*" "\\1" _lz4_version_minor "${_lz4_version_lines}")
string(REGEX REPLACE ".*LZ4_VERSION_RELEASE *\([0-9]*\).*" "\\1" _lz4_version_release "${_lz4_version_lines}")
set(lz4_VERSION "${_lz4_version_major}.${_lz4_version_minor}.${_lz4_version_release}")
unset(_lz4_version_major)
unset(_lz4_version_minor)
unset(_lz4_version_release)
unset(_lz4_version_lines)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(lz4
FOUND_VAR lz4_FOUND
REQUIRED_VARS
lz4_LIBRARY
lz4_INCLUDE_DIR
VERSION_VAR lz4_VERSION
)
if(lz4_FOUND)
set(lz4_LIBRARIES ${lz4_LIBRARY})
set(lz4_INCLUDE_DIRS ${lz4_INCLUDE_DIR})
set(lz4_DEFINITIONS ${PC_lz4_CFLAGS_OTHER})
endif()
if(lz4_FOUND AND NOT TARGET lz4::lz4)
add_library(lz4::lz4 UNKNOWN IMPORTED)
set_target_properties(lz4::lz4 PROPERTIES
IMPORTED_LOCATION "${lz4_LIBRARY}"
INTERFACE_COMPILE_OPTIONS "${PC_lz4_CFLAGS_OTHER}"
INTERFACE_INCLUDE_DIRECTORIES "${lz4_INCLUDE_DIR}"
)
endif()
mark_as_advanced(
lz4_INCLUDE_DIR
lz4_LIBRARY
)