yuzu/externals/find-modules/Findlz4.cmake

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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 01cf05bc75b1e47beb08937439f3ed9339e7b254
2022-05-14 20:06:02 -04:00
# 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
)