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c5d506e9bb
Before this patch we detected the presence of a specific zstd API to
see if we can use the library. zstd published that API in its first
stable release: v1.0.0 (2016-08-31).
Replace that method by detecting the zstd library version instead and
accepting if it's v1.0.0 or newer. Also display this detected version
and display a warning if the zstd found is unfit for curl.
We use the same version detection method as zstd itself, via its public
C header.
This deviates from autotools which keeps using the slow method of
looking for the API by building a test program. The outcome is the same
as long as zstd keeps offering this API.
Ref: 5a0c8e2439 (2016-08-12, committed)
Ref: https://github.com/facebook/zstd/releases/tag/v0.8.1 (2016-08-18, first released)
Ref: https://github.com/facebook/zstd/releases/tag/v1.0.0
Reviewed-by: Daniel Stenberg
Closes #12200
79 lines
2.3 KiB
CMake
79 lines
2.3 KiB
CMake
#***************************************************************************
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# _ _ ____ _
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# Project ___| | | | _ \| |
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# / __| | | | |_) | |
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# | (__| |_| | _ <| |___
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# \___|\___/|_| \_\_____|
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#
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# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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#
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# This software is licensed as described in the file COPYING, which
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# you should have received as part of this distribution. The terms
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# are also available at https://curl.se/docs/copyright.html.
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#
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# You may opt to use, copy, modify, merge, publish, distribute and/or sell
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# copies of the Software, and permit persons to whom the Software is
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# furnished to do so, under the terms of the COPYING file.
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#
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# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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# KIND, either express or implied.
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#
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# SPDX-License-Identifier: curl
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#
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###########################################################################
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#[=======================================================================[.rst:
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FindZstd
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----------
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Find the zstd library
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Result Variables
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^^^^^^^^^^^^^^^^
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``Zstd_FOUND``
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System has zstd
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``Zstd_INCLUDE_DIRS``
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The zstd include directories.
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``Zstd_LIBRARIES``
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The libraries needed to use zstd
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#]=======================================================================]
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if(UNIX)
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find_package(PkgConfig QUIET)
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pkg_search_module(PC_Zstd libzstd)
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endif()
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find_path(Zstd_INCLUDE_DIR zstd.h
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HINTS
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${PC_Zstd_INCLUDEDIR}
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${PC_Zstd_INCLUDE_DIRS}
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)
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find_library(Zstd_LIBRARY NAMES zstd
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HINTS
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${PC_Zstd_LIBDIR}
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${PC_Zstd_LIBRARY_DIRS}
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)
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if(Zstd_INCLUDE_DIR)
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file(READ "${Zstd_INCLUDE_DIR}/zstd.h" _zstd_header)
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string(REGEX MATCH ".*define ZSTD_VERSION_MAJOR *([0-9]+).*define ZSTD_VERSION_MINOR *([0-9]+).*define ZSTD_VERSION_RELEASE *([0-9]+)" _zstd_ver "${_zstd_header}")
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set(Zstd_VERSION "${CMAKE_MATCH_1}.${CMAKE_MATCH_2}.${CMAKE_MATCH_3}")
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endif()
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include(FindPackageHandleStandardArgs)
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find_package_handle_standard_args(Zstd
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REQUIRED_VARS
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Zstd_LIBRARY
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Zstd_INCLUDE_DIR
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VERSION_VAR Zstd_VERSION
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)
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if(Zstd_FOUND)
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set(Zstd_LIBRARIES ${Zstd_LIBRARY})
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set(Zstd_INCLUDE_DIRS ${Zstd_INCLUDE_DIR})
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endif()
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mark_as_advanced(Zstd_INCLUDE_DIRS Zstd_LIBRARIES)
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