# Licensed to the Apache Software Foundation (ASF) under one or more contributor
# license agreements.  See the NOTICE file distributed with this work for
# additional information regarding copyright ownership.  The ASF licenses this
# file to you under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License.  You may obtain a copy of
# the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
# License for the specific language governing permissions and limitations under
# the License.

if (MSVC AND NOT DEFINED LZ4_MSVC_STATIC_LIB_SUFFIX)
  set(LZ4_MSVC_STATIC_LIB_SUFFIX "_static")
endif ()

set(LZ4_STATIC_LIB_SUFFIX
    "${LZ4_MSVC_STATIC_LIB_SUFFIX}${CMAKE_STATIC_LIBRARY_SUFFIX}")

set(LZ4_STATIC_LIB_NAME
    ${CMAKE_STATIC_LIBRARY_PREFIX}lz4${LZ4_STATIC_LIB_SUFFIX})

if (LZ4_ROOT)
  find_library(
    LZ4_LIB
    NAMES
      lz4 ${LZ4_STATIC_LIB_NAME} lib${LZ4_STATIC_LIB_NAME}
      "${CMAKE_SHARED_LIBRARY_PREFIX}lz4_static${CMAKE_SHARED_LIBRARY_SUFFIX}"
    PATHS ${LZ4_ROOT}
    PATH_SUFFIXES ${LIB_PATH_SUFFIXES}
    NO_DEFAULT_PATH)
  find_path(
    LZ4_INCLUDE_DIR
    NAMES lz4.h
    PATHS ${LZ4_ROOT}
    NO_DEFAULT_PATH
    PATH_SUFFIXES ${INCLUDE_PATH_SUFFIXES})

else ()
  pkg_check_modules(LZ4_PC liblz4)
  if (LZ4_PC_FOUND)
    set(LZ4_INCLUDE_DIR "${LZ4_PC_INCLUDEDIR}")

    list(APPEND LZ4_PC_LIBRARY_DIRS "${LZ4_PC_LIBDIR}")
    find_library(
      LZ4_LIB lz4
      PATHS ${LZ4_PC_LIBRARY_DIRS}
      NO_DEFAULT_PATH
      PATH_SUFFIXES ${LIB_PATH_SUFFIXES})
  else ()
    find_library(
      LZ4_LIB
      NAMES
        lz4 ${LZ4_STATIC_LIB_NAME} lib${LZ4_STATIC_LIB_NAME}
        "${CMAKE_SHARED_LIBRARY_PREFIX}lz4_static${CMAKE_SHARED_LIBRARY_SUFFIX}"
      PATH_SUFFIXES ${LIB_PATH_SUFFIXES})
    find_path(
      LZ4_INCLUDE_DIR
      NAMES lz4.h
      PATH_SUFFIXES ${INCLUDE_PATH_SUFFIXES})
  endif ()
endif ()

find_package_handle_standard_args(Lz4 REQUIRED_VARS LZ4_LIB LZ4_INCLUDE_DIR)

# CMake 3.2 does uppercase the FOUND variable
if (Lz4_FOUND OR LZ4_FOUND)
  set(Lz4_FOUND TRUE)
  add_library(LZ4::lz4 UNKNOWN IMPORTED)
  set_target_properties(
    LZ4::lz4
    PROPERTIES IMPORTED_LOCATION "${LZ4_LIB}" INTERFACE_INCLUDE_DIRECTORIES
                                              "${LZ4_INCLUDE_DIR}")
endif ()
