curl/CMake/FindZstd.cmake
Viktor Szakats 3e60f174ee
cmake: tidy up more in Find modules
- add `NAMES` where missing.
- document input variables (including deprecated ones.)
- comment cleanups.
- FindWolfSSL: drop stray `QUIET` from `pkg_check_modules()`.
  (`QUIET` may be re-added for all modules in the future.)

Closes #14579
2024-08-18 22:53:09 +02:00

102 lines
3.5 KiB
CMake

#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
# Find the zstd library
#
# Input variables:
#
# ZSTD_INCLUDE_DIR The zstd include directory
# Zstd_INCLUDE_DIR The zstd include directory (deprecated)
# ZSTD_LIBRARY Path to zstd library
# Zstd_LIBRARY Path to zstd library (deprecated)
#
# Result variables:
#
# ZSTD_FOUND System has zstd
# ZSTD_INCLUDE_DIRS The zstd include directories
# ZSTD_LIBRARIES The zstd library names
# ZSTD_VERSION Version of zstd
if(DEFINED Zstd_INCLUDE_DIR AND NOT DEFINED ZSTD_INCLUDE_DIR)
message(WARNING "Zstd_INCLUDE_DIR is deprecated, use ZSTD_INCLUDE_DIR instead.")
set(ZSTD_INCLUDE_DIR "${Zstd_INCLUDE_DIR}")
endif()
if(DEFINED Zstd_LIBRARY AND NOT DEFINED ZSTD_LIBRARY)
message(WARNING "Zstd_LIBRARY is deprecated, use ZSTD_LIBRARY instead.")
set(ZSTD_LIBRARY "${Zstd_LIBRARY}")
endif()
if(CURL_USE_PKGCONFIG)
find_package(PkgConfig QUIET)
pkg_check_modules(PC_ZSTD "libzstd")
endif()
find_path(ZSTD_INCLUDE_DIR NAMES "zstd.h"
HINTS
${PC_ZSTD_INCLUDEDIR}
${PC_ZSTD_INCLUDE_DIRS}
)
find_library(ZSTD_LIBRARY NAMES "zstd"
HINTS
${PC_ZSTD_LIBDIR}
${PC_ZSTD_LIBRARY_DIRS}
)
if(PC_ZSTD_VERSION)
set(ZSTD_VERSION ${PC_ZSTD_VERSION})
elseif(ZSTD_INCLUDE_DIR AND EXISTS "${ZSTD_INCLUDE_DIR}/zstd.h")
set(_version_regex1 "#[\t ]*define[ \t]+ZSTD_VERSION_MAJOR[ \t]+([0-9]+).*")
set(_version_regex2 "#[\t ]*define[ \t]+ZSTD_VERSION_MINOR[ \t]+([0-9]+).*")
set(_version_regex3 "#[\t ]*define[ \t]+ZSTD_VERSION_RELEASE[ \t]+([0-9]+).*")
file(STRINGS "${ZSTD_INCLUDE_DIR}/zstd.h" _version_str1 REGEX "${_version_regex1}")
file(STRINGS "${ZSTD_INCLUDE_DIR}/zstd.h" _version_str2 REGEX "${_version_regex2}")
file(STRINGS "${ZSTD_INCLUDE_DIR}/zstd.h" _version_str3 REGEX "${_version_regex3}")
string(REGEX REPLACE "${_version_regex1}" "\\1" _version_str1 "${_version_str1}")
string(REGEX REPLACE "${_version_regex2}" "\\1" _version_str2 "${_version_str2}")
string(REGEX REPLACE "${_version_regex3}" "\\1" _version_str3 "${_version_str3}")
set(ZSTD_VERSION "${_version_str1}.${_version_str2}.${_version_str3}")
unset(_version_regex1)
unset(_version_regex2)
unset(_version_regex3)
unset(_version_str1)
unset(_version_str2)
unset(_version_str3)
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Zstd
REQUIRED_VARS
ZSTD_INCLUDE_DIR
ZSTD_LIBRARY
VERSION_VAR
ZSTD_VERSION
)
if(ZSTD_FOUND)
set(ZSTD_INCLUDE_DIRS ${ZSTD_INCLUDE_DIR})
set(ZSTD_LIBRARIES ${ZSTD_LIBRARY})
endif()
mark_as_advanced(ZSTD_INCLUDE_DIR ZSTD_LIBRARY)