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			213 lines
		
	
	
		
			7.8 KiB
		
	
	
	
		
			CMake
		
	
	
	
	
	
			
		
		
	
	
			213 lines
		
	
	
		
			7.8 KiB
		
	
	
	
		
			CMake
		
	
	
	
	
	
# ################################################################
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# Copyright (c) Meta Platforms, Inc. and affiliates.
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# All rights reserved.
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#
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# This source code is licensed under both the BSD-style license (found in the
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# LICENSE file in the root directory of this source tree) and the GPLv2 (found
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# in the COPYING file in the root directory of this source tree).
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# ################################################################
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cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
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# As of 2018-12-26 ZSTD has been validated to build with cmake version 3.13.2 new policies.
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# Set and use the newest cmake policies that are validated to work
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set(ZSTD_MAX_VALIDATED_CMAKE_MAJOR_VERSION "3")
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set(ZSTD_MAX_VALIDATED_CMAKE_MINOR_VERSION "13") #Policies never changed at PATCH level
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if("${CMAKE_MAJOR_VERSION}" LESS 3)
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  set(ZSTD_CMAKE_POLICY_VERSION "${CMAKE_VERSION}")
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elseif( "${ZSTD_MAX_VALIDATED_CMAKE_MAJOR_VERSION}" EQUAL "${CMAKE_MAJOR_VERSION}" AND
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        "${ZSTD_MAX_VALIDATED_CMAKE_MINOR_VERSION}" GREATER "${CMAKE_MINOR_VERSION}")
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    set(ZSTD_CMAKE_POLICY_VERSION "${CMAKE_VERSION}")
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else()
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    set(ZSTD_CMAKE_POLICY_VERSION "${ZSTD_MAX_VALIDATED_CMAKE_MAJOR_VERSION}.${ZSTD_MAX_VALIDATED_CMAKE_MINOR_VERSION}.0")
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endif()
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cmake_policy(VERSION ${ZSTD_CMAKE_POLICY_VERSION})
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set(CMAKE_BUILD_WITH_INSTALL_RPATH on)
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list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMakeModules")
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set(ZSTD_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../..")
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set(LIBRARY_DIR ${ZSTD_SOURCE_DIR}/lib)
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# Parse version
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include(GetZstdLibraryVersion)
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GetZstdLibraryVersion(${LIBRARY_DIR}/zstd.h zstd_VERSION_MAJOR zstd_VERSION_MINOR zstd_VERSION_PATCH)
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if( CMAKE_MAJOR_VERSION LESS 3 )
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  ## Provide cmake 3+ behavior for older versions of cmake
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  project(zstd)
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  set(PROJECT_VERSION_MAJOR ${zstd_VERSION_MAJOR})
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  set(PROJECT_VERSION_MINOR ${zstd_VERSION_MINOR})
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  set(PROJECT_VERSION_PATCH ${zstd_VERSION_PATCH})
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  set(PROJECT_VERSION "${zstd_VERSION_MAJOR}.${zstd_VERSION_MINOR}.${zstd_VERSION_PATCH}")
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  enable_language(C)   # Main library is in C
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  enable_language(ASM) # And ASM
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  enable_language(CXX) # Testing contributed code also utilizes CXX
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else()
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  project(zstd
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    VERSION "${zstd_VERSION_MAJOR}.${zstd_VERSION_MINOR}.${zstd_VERSION_PATCH}"
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    LANGUAGES C   # Main library is in C
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              ASM # And ASM
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              CXX # Testing contributed code also utilizes CXX
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    )
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endif()
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message(STATUS "ZSTD VERSION: ${zstd_VERSION}")
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set(zstd_HOMEPAGE_URL "https://facebook.github.io/zstd")
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set(zstd_DESCRIPTION  "Zstandard is a real-time compression algorithm, providing high compression ratios.")
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# Set a default build type if none was specified
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if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
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  message(STATUS "Setting build type to 'Release' as none was specified.")
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  set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build." FORCE)
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  # Set the possible values of build type for cmake-gui
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  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
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endif()
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include(GNUInstallDirs)
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#-----------------------------------------------------------------------------
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# Add extra compilation flags
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#-----------------------------------------------------------------------------
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include(AddZstdCompilationFlags)
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ADD_ZSTD_COMPILATION_FLAGS()
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# Always hide XXHash symbols
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add_definitions(-DXXH_NAMESPACE=ZSTD_)
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#-----------------------------------------------------------------------------
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# Installation variables
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#-----------------------------------------------------------------------------
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message(STATUS "CMAKE_INSTALL_PREFIX: ${CMAKE_INSTALL_PREFIX}")
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message(STATUS "CMAKE_INSTALL_LIBDIR: ${CMAKE_INSTALL_LIBDIR}")
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#-----------------------------------------------------------------------------
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# Options
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#-----------------------------------------------------------------------------
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# Legacy support
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option(ZSTD_LEGACY_SUPPORT "LEGACY SUPPORT" ON)
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if (ZSTD_LEGACY_SUPPORT)
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    message(STATUS "ZSTD_LEGACY_SUPPORT defined!")
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    set(ZSTD_LEGACY_LEVEL 5 CACHE STRING "")
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    add_definitions(-DZSTD_LEGACY_SUPPORT=${ZSTD_LEGACY_LEVEL})
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else ()
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    message(STATUS "ZSTD_LEGACY_SUPPORT not defined!")
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    add_definitions(-DZSTD_LEGACY_SUPPORT=0)
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endif ()
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if (ANDROID)
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    set(ZSTD_MULTITHREAD_SUPPORT_DEFAULT OFF)
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else()
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    set(ZSTD_MULTITHREAD_SUPPORT_DEFAULT ON)
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endif()
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# Multi-threading support
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option(ZSTD_MULTITHREAD_SUPPORT "MULTITHREADING SUPPORT" ${ZSTD_MULTITHREAD_SUPPORT_DEFAULT})
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if (ZSTD_MULTITHREAD_SUPPORT)
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    message(STATUS "ZSTD_MULTITHREAD_SUPPORT is enabled")
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else ()
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    message(STATUS "ZSTD_MULTITHREAD_SUPPORT is disabled")
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endif ()
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option(ZSTD_BUILD_PROGRAMS "BUILD PROGRAMS" ON)
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option(ZSTD_BUILD_CONTRIB "BUILD CONTRIB" OFF)
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# Respect the conventional CMake option for enabling tests if it was specified on the first configure
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if (BUILD_TESTING)
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    set(ZSTD_BUILD_TESTS_default ON)
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else()
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    set(ZSTD_BUILD_TESTS_default OFF)
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endif()
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option(ZSTD_BUILD_TESTS "BUILD TESTS" ${ZSTD_BUILD_TESTS_default})
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if (MSVC)
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    option(ZSTD_USE_STATIC_RUNTIME "LINK TO STATIC RUN-TIME LIBRARIES" OFF)
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endif ()
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#-----------------------------------------------------------------------------
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# External dependencies
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#-----------------------------------------------------------------------------
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if (ZSTD_MULTITHREAD_SUPPORT AND UNIX)
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    set(THREADS_PREFER_PTHREAD_FLAG ON)
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    find_package(Threads REQUIRED)
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    if(CMAKE_USE_PTHREADS_INIT)
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        set(THREADS_LIBS "${CMAKE_THREAD_LIBS_INIT}")
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    else()
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        message(SEND_ERROR "ZSTD currently does not support thread libraries other than pthreads")
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    endif()
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endif ()
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#-----------------------------------------------------------------------------
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# Add source directories
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#-----------------------------------------------------------------------------
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add_subdirectory(lib)
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option(ZSTD_PROGRAMS_LINK_SHARED "PROGRAMS LINK SHARED" OFF)
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if (ZSTD_BUILD_PROGRAMS)
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    if (NOT ZSTD_BUILD_STATIC AND NOT ZSTD_PROGRAMS_LINK_SHARED)
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        message(SEND_ERROR "You need to build static library to build zstd CLI")
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    elseif(NOT ZSTD_BUILD_SHARED AND ZSTD_PROGRAMS_LINK_SHARED)
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        message(SEND_ERROR "You need to build shared library to build zstd CLI")
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    endif ()
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    add_subdirectory(programs)
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endif ()
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if (ZSTD_BUILD_TESTS)
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    enable_testing()
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    if (NOT ZSTD_BUILD_STATIC)
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        message(SEND_ERROR "You need to build static library to build tests")
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    endif ()
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    add_subdirectory(tests)
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endif ()
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if (ZSTD_BUILD_CONTRIB)
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    add_subdirectory(contrib)
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endif ()
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#-----------------------------------------------------------------------------
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# Add clean-all target
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#-----------------------------------------------------------------------------
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add_custom_target(clean-all
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   COMMAND ${CMAKE_BUILD_TOOL} clean
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   COMMAND rm -rf ${CMAKE_BINARY_DIR}/
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)
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#-----------------------------------------------------------------------------
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# Generate Package Config files
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#
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# This section is based on the boiler plate code from:
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# https://cmake.org/cmake/help/latest/manual/cmake-packages.7.html#creating-packages
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#-----------------------------------------------------------------------------
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include(CMakePackageConfigHelpers)
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write_basic_package_version_file(
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    "${CMAKE_CURRENT_BINARY_DIR}/zstdConfigVersion.cmake"
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    VERSION ${zstd_VERSION}
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    COMPATIBILITY SameMajorVersion
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    )
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# A Package Config file that works from the build directory
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export(EXPORT zstdExports
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    FILE "${CMAKE_CURRENT_BINARY_DIR}/zstdTargets.cmake"
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    NAMESPACE zstd::
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    )
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configure_file(zstdConfig.cmake
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    "${CMAKE_CURRENT_BINARY_DIR}/zstdConfig.cmake"
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    COPYONLY
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    )
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# A Package Config file that works from the installation directory
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set(ConfigPackageLocation ${CMAKE_INSTALL_LIBDIR}/cmake/zstd)
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install(EXPORT zstdExports
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    FILE zstdTargets.cmake
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    NAMESPACE zstd::
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    DESTINATION ${ConfigPackageLocation}
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    )
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install(FILES
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    zstdConfig.cmake
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    "${CMAKE_CURRENT_BINARY_DIR}/zstdConfigVersion.cmake"
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    DESTINATION ${ConfigPackageLocation}
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    )
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