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if(zstd_FOUND)
return()
endif()
set(zstd_FOUND FALSE)
if(ZSTD_FROM_INTERNET AND NOT ZSTD_FROM_INTERNET STREQUAL "AUTO")
message(STATUS "Using zstd from the Internet")
set(do_download TRUE)
else()
find_package(PkgConfig)
if(PKG_CONFIG_FOUND)
pkg_search_module(PC_ZSTD libzstd)
find_library(ZSTD_LIBRARY zstd HINTS ${PC_ZSTD_LIBDIR} ${PC_ZSTD_LIBRARY_DIRS})
find_path(ZSTD_INCLUDE_DIR zstd.h HINTS ${PC_ZSTD_INCLUDEDIR} ${PC_ZSTD_INCLUDE_DIRS})
if(ZSTD_LIBRARY AND ZSTD_INCLUDE_DIR)
message(STATUS "Using zstd from ${ZSTD_LIBRARY} via pkg-config")
set(zstd_FOUND TRUE)
endif()
endif()
if(NOT zstd_FOUND)
find_library(ZSTD_LIBRARY zstd)
find_path(ZSTD_INCLUDE_DIR zstd.h)
if(ZSTD_LIBRARY AND ZSTD_INCLUDE_DIR)
message(STATUS "Using zstd from ${ZSTD_LIBRARY}")
set(zstd_FOUND TRUE)
endif()
endif()
if(zstd_FOUND)
mark_as_advanced(ZSTD_INCLUDE_DIR ZSTD_LIBRARY)
add_library(ZSTD::ZSTD UNKNOWN IMPORTED)
set_target_properties(
ZSTD::ZSTD
PROPERTIES
IMPORTED_LOCATION "${ZSTD_LIBRARY}"
INTERFACE_INCLUDE_DIRECTORIES "${ZSTD_INCLUDE_DIR}"
)
set(zstd_FOUND TRUE)
elseif(ZSTD_FROM_INTERNET STREQUAL "AUTO")
message(STATUS "*** WARNING ***: Using zstd from the Internet because it was not found and ZSTD_FROM_INTERNET is AUTO")
set(do_download TRUE)
endif()
endif()
if(do_download)
# Although ${zstd_FIND_VERSION} was requested, let's download a newer version.
# Note: The directory structure has changed in 1.3.0; we only support 1.3.0
# and newer.
set(zstd_version "1.5.2")
set(zstd_dir ${CMAKE_BINARY_DIR}/zstd-${zstd_version})
set(zstd_build ${CMAKE_BINARY_DIR}/zstd-build)
include(FetchContent)
FetchContent_Declare(
zstd
URL https://github.com/facebook/zstd/releases/download/v${zstd_version}/zstd-${zstd_version}.tar.gz
URL_HASH SHA256=7c42d56fac126929a6a85dbc73ff1db2411d04f104fae9bdea51305663a83fd0
SOURCE_DIR ${zstd_dir}
BINARY_DIR ${zstd_build}
)
FetchContent_GetProperties(zstd)
if(NOT zstd_POPULATED)
FetchContent_Populate(zstd)
endif()
set(ZSTD_BUILD_SHARED OFF)
add_subdirectory("${zstd_dir}/build/cmake" "${zstd_build}" EXCLUDE_FROM_ALL)
add_library(ZSTD::ZSTD ALIAS libzstd_static)
set_target_properties(
libzstd_static
PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "$<BUILD_INTERFACE:${zstd_dir}/lib>"
)
set(zstd_FOUND TRUE)
endif()
include(FeatureSummary)
set_package_properties(
zstd
PROPERTIES
URL "https://facebook.github.io/zstd"
DESCRIPTION "Zstandard - Fast real-time compression algorithm"
)
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