Using simple FindLz4.cmake to make it work with linux arm64 (#1120)

### What problem does this PR solve?

make it work with linux arm64 when finding lz4 lib

### Type of change

- [x] Refactoring

Author: absolute8511

cmake/FindLz4.cmake

@@ -1,208 +1,28 @@
 # - Find LZ4 (lz4.h, liblz4.a, liblz4.so, and liblz4.so.1)
-# This module defines
-#  Lz4_INCLUDE_DIR, directory containing headers
-#  Lz4_LIBRARY_DIR, directory containing lz4 libraries
-#  Lz4_SHARED_LIB, path to liblz4.so/liblz4.dll
-#  Lz4_STATIC_LIB, path to liblz4.lib
-#  Lz4_FOUND, whether lz4 has been found
 
-if ("${LZ4_ROOT}" STREQUAL "")
-  set(LZ4_ROOT "$ENV{LZ4_ROOT}")
-  if (NOT "${LZ4_ROOT}" STREQUAL "")
-    string(REPLACE "\"" "" LZ4_ROOT ${LZ4_ROOT})
-  endif ()
-endif ()
+#
+# This module defines:
+# LZ4_FOUND
+# LZ4_INCLUDE_DIR
+# LZ4_LIBRARY
+#
 
-if (NOT "${LZ4_ROOT}" STREQUAL "")
-  set(LZ4_SEARCH_HEADER_PATHS
-    ${LZ4_ROOT}
-    ${LZ4_ROOT}/include
-    ${LZ4_ROOT}/include/lz4
-    ${LZ4_ROOT}/include
-    ${LZ4_ROOT}/lib
-    )
+find_path(LZ4_INCLUDE_DIR NAMES lz4.h)
 
-  set(LZ4_SEARCH_LIB_PATHS
-    ${LZ4_ROOT}
-    ${LZ4_ROOT}/lib
-    )
+find_library(LZ4_LIBRARY_DEBUG NAMES lz4d)
+find_library(LZ4_LIBRARY_RELEASE NAMES lz4)
 
-  set(LZ4_SEARCH_SRC_PATHS
-    ${LZ4_ROOT}
-    ${LZ4_ROOT}/lib
-    ${LZ4_ROOT}/src
-    ${LZ4_ROOT}/src/lz4
-    ${LZ4_ROOT}/src/lz4/lib
-    )
-elseif (NOT MSVC)
-  set(LZ4_SEARCH_HEADER_PATHS
-    "/usr/include"
-    "/usr/include/lz4"
-    "/usr/include/x86_64-linux-gnu"
-    "/usr/include/x86_64-linux-gnu/lz4"
-    )
-
-  set(LZ4_SEARCH_LIB_PATHS
-    "/lib"
-    "/lib/x86_64-linux-gnu"
-    "/usr/lib"
-    "/usr/lib/x86_64-linux-gnu"
-    )
-
-  set(LZ4_SEARCH_SRC_PATHS
-    "/usr/src"
-    "/usr/src/lz4"
-    "/usr/src/lz4/lib"
-    )
-endif ()
-
-find_path(Lz4_INCLUDE_DIR
-  lz4.h
-  PATHS ${LZ4_SEARCH_HEADER_PATHS}
-  NO_DEFAULT_PATH # make sure we don't accidentally pick up a different version
-  )
-
-find_path(Lz4_SRC_DIR_LZ4
-  lz4.c
-  PATHS ${LZ4_SEARCH_SRC_PATHS}
-  NO_DEFAULT_PATH # make sure we don't accidentally pick up a different version
-  )
-
-if (Lz4_SRC_DIR_LZ4)
-  get_filename_component(Lz4_SRC_DIR_PARENT ${Lz4_SRC_DIR_LZ4} DIRECTORY)
-
-  set(LZ4_CMAKE_PATH "")
-
-  if (IS_DIRECTORY "${Lz4_SRC_DIR_PARENT}/build/cmake")
-    if (EXISTS "${Lz4_SRC_DIR_PARENT}/build/cmake/CMakeLists.txt") # Location of CMakeLists.txt is changed since 1.9.3
-      set(LZ4_CMAKE_PATH ${Lz4_SRC_DIR_PARENT}/build/cmake)
-    endif ()
-  elseif (IS_DIRECTORY "${Lz4_SRC_DIR_PARENT}/contrib/cmake_unofficial")
-    if (EXISTS "${Lz4_SRC_DIR_PARENT}/contrib/cmake_unofficial/CMakeLists.txt") # Location of CMakeLists.txt before 1.9.3
-      set(LZ4_CMAKE_PATH ${Lz4_SRC_DIR_PARENT}/contrib/cmake_unofficial)
-    endif ()
-  endif ()
-
-  if ("${LZ4_CMAKE_PATH}" STREQUAL "")
-    message(FATAL_ERROR "Can't find CMakeLists.txt for LZ4")
-  endif ()
-
-  find_path(Lz4_SRC_DIR_CMAKE
-    CMakeLists.txt
-    PATHS ${Lz4_SRC_DIR_LZ4} ${LZ4_CMAKE_PATH}
-    NO_DEFAULT_PATH # make sure we don't accidentally pick up a different version
-    )
-endif ()
-
-# found the cmake enabled source directory
-if (Lz4_INCLUDE_DIR AND Lz4_SRC_DIR_LZ4 AND Lz4_SRC_DIR_CMAKE)
-  set(Lz4_FOUND TRUE)
-
-  # for lz4_shared must set LZ4_BUNDLED_MODE=OFF + BUILD_STATIC_LIBS=ON CACHE FORCE
-  # for lz4_static must set BUILD_SHARED_LIBS=ON CACHE FORCE
-  set(LZ4_BUNDLED_MODE OFF) # enable lz4_shared
-  set(BUILD_SHARED_LIBS ON CACHE BOOL "" FORCE) # enable lz4_static
-  set(BUILD_STATIC_LIBS ON CACHE BOOL "" FORCE) # enable lz4_shared
-  set(LZ4_POSITION_INDEPENDENT_LIB ON)
-  add_subdirectory(
-    ${Lz4_SRC_DIR_CMAKE}
-    ${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/iresearch-lz4.dir
-    EXCLUDE_FROM_ALL # do not build unused targets
-  )
-
-  set(Lz4_LIBRARY_DIR ${LZ4_SEARCH_LIB_PATHS})
-  set(Lz4_SHARED_LIB lz4_shared)
-  set(Lz4_STATIC_LIB lz4_static)
-
-  return()
-endif ()
-
-include(utils)
-
-# set options for: shared
-if (MSVC)
-  set(LZ4_LIBRARY_PREFIX "")
-  set(LZ4_LIBRARY_SUFFIX ".lib")
-elseif (APPLE)
-  set(LZ4_LIBRARY_PREFIX "lib")
-  set(LZ4_LIBRARY_SUFFIX ".dylib")
-else ()
-  set(LZ4_LIBRARY_PREFIX "lib")
-  set(LZ4_LIBRARY_SUFFIX ".so")
-endif ()
-set_find_library_options("${LZ4_LIBRARY_PREFIX}" "${LZ4_LIBRARY_SUFFIX}")
-
-# find library
-find_library(Lz4_SHARED_LIB
-  NAMES lz4
-  PATHS ${LZ4_SEARCH_LIB_PATHS}
-  NO_DEFAULT_PATH
-  )
-
-# restore initial options
-restore_find_library_options()
-
-
-# set options for: static
-if (MSVC)
-  set(LZ4_LIBRARY_PREFIX "")
-  set(LZ4_LIBRARY_SUFFIX ".lib")
-else ()
-  set(LZ4_LIBRARY_PREFIX "lib")
-  set(LZ4_LIBRARY_SUFFIX ".a")
-endif ()
-set_find_library_options("${LZ4_LIBRARY_PREFIX}" "${LZ4_LIBRARY_SUFFIX}")
-
-# find library
-find_library(Lz4_STATIC_LIB
-  NAMES lz4
-  PATHS ${LZ4_SEARCH_LIB_PATHS}
-  NO_DEFAULT_PATH
-  )
-
-# restore initial options
-restore_find_library_options()
-
-
-if (Lz4_INCLUDE_DIR AND Lz4_SHARED_LIB AND Lz4_STATIC_LIB)
-  set(Lz4_FOUND TRUE)
-  set(Lz4_LIBRARY_DIR
-    "${LZ4_SEARCH_LIB_PATHS}"
-    CACHE PATH
-    "Directory containing lz4 libraries"
-    FORCE
-    )
-
-  add_library(lz4_shared IMPORTED SHARED)
-  set_target_properties(lz4_shared PROPERTIES
-    INTERFACE_INCLUDE_DIRECTORIES "${Lz4_INCLUDE_DIR}"
-    IMPORTED_LOCATION "${Lz4_SHARED_LIB}"
-    )
-
-  add_library(lz4_static IMPORTED STATIC)
-  set_target_properties(lz4_static PROPERTIES
-    INTERFACE_INCLUDE_DIRECTORIES "${Lz4_INCLUDE_DIR}"
-    IMPORTED_LOCATION "${Lz4_STATIC_LIB}"
-    )
-else ()
-  set(Lz4_FOUND FALSE)
-endif ()
+include(SelectLibraryConfigurations)
+SELECT_LIBRARY_CONFIGURATIONS(LZ4)
 
 include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(Lz4
-  DEFAULT_MSG
-  Lz4_INCLUDE_DIR
-  Lz4_SHARED_LIB
-  Lz4_STATIC_LIB
-  )
-message("Lz4_INCLUDE_DIR: " ${Lz4_INCLUDE_DIR})
-message("Lz4_LIBRARY_DIR: " ${Lz4_LIBRARY_DIR})
-message("Lz4_SHARED_LIB: " ${Lz4_SHARED_LIB})
-message("Lz4_STATIC_LIB: " ${Lz4_STATIC_LIB})
-
-mark_as_advanced(
-  Lz4_INCLUDE_DIR
-  Lz4_LIBRARY_DIR
-  Lz4_SHARED_LIB
-  Lz4_STATIC_LIB
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(
+    LZ4 DEFAULT_MSG
+    LZ4_LIBRARY LZ4_INCLUDE_DIR
 )
+
+if (LZ4_FOUND)
+    message(STATUS "Found LZ4: ${LZ4_LIBRARY}")
+endif()
+
+mark_as_advanced(LZ4_INCLUDE_DIR LZ4_LIBRARY)