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# Try to find liblz4
#
# Once done, this will define
#
# LZ4_FOUND
# LZ4_INCLUDE_DIR
# LZ4_LIBRARY
# LZ4_VERSION_STRING
# LZ4_VERSION_MAJOR
# LZ4_VERSION_MINOR
# LZ4_VERSION_RELEASE
find_path(LZ4_INCLUDE_DIR NAMES lz4.h)
if(LZ4_INCLUDE_DIR AND EXISTS "${LZ4_INCLUDE_DIR}/lz4.h")
foreach(ver "MAJOR" "MINOR" "RELEASE")
file(STRINGS "${LZ4_INCLUDE_DIR}/lz4.h" LZ4_VER_${ver}_LINE
REGEX "^#define[ \t]+LZ4_VERSION_${ver}[ \t]+[0-9]+[ \t]+.*$")
string(REGEX REPLACE "^#define[ \t]+LZ4_VERSION_${ver}[ \t]+([0-9]+)[ \t]+.*$"
"\\1" LZ4_VERSION_${ver} "${LZ4_VER_${ver}_LINE}")
unset(${LZ4_VER_${ver}_LINE})
endforeach()
set(LZ4_VERSION_STRING
"${LZ4_VERSION_MAJOR}.${LZ4_VERSION_MINOR}.${LZ4_VERSION_RELEASE}")
endif()
find_library(LZ4_LIBRARY NAMES lz4)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(LZ4
REQUIRED_VARS LZ4_LIBRARY LZ4_INCLUDE_DIR
VERSION_VAR LZ4_VERSION_STRING)
mark_as_advanced(LZ4_INCLUDE_DIR LZ4_LIBRARY)
if(LZ4_FOUND AND NOT (TARGET LZ4::LZ4))
add_library(LZ4::LZ4 UNKNOWN IMPORTED)
set_target_properties(LZ4::LZ4 PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${LZ4_INCLUDE_DIR}"
IMPORTED_LINK_INTERFACE_LANGUAGES "C"
IMPORTED_LOCATION "${LZ4_LIBRARY}"
VERSION "${LZ4_VERSION_STRING}")
endif()
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