cmake_minimum_required(VERSION 3.2)

if (WIN32)
	# set windows 7 as the minimum version
	add_definitions(-D_WIN32_WINNT=0x0601)
endif()

project(leveldb)

include(CheckCXXCompilerFlag)

list(APPEND SOURCES db/builder.cc)
list(APPEND SOURCES db/c.cc)
list(APPEND SOURCES db/db_impl.cc)
list(APPEND SOURCES db/db_iter.cc)
list(APPEND SOURCES db/dbformat.cc)
list(APPEND SOURCES db/filename.cc)
list(APPEND SOURCES db/log_reader.cc)
list(APPEND SOURCES db/log_writer.cc)
list(APPEND SOURCES db/memtable.cc)
list(APPEND SOURCES db/repair.cc)
list(APPEND SOURCES db/table_cache.cc)
list(APPEND SOURCES db/version_edit.cc)
list(APPEND SOURCES db/version_set.cc)
list(APPEND SOURCES db/write_batch.cc)
list(APPEND SOURCES table/block.cc)
list(APPEND SOURCES table/block_builder.cc)
list(APPEND SOURCES table/filter_block.cc)
list(APPEND SOURCES table/format.cc)
list(APPEND SOURCES table/iterator.cc)
list(APPEND SOURCES table/merger.cc)
list(APPEND SOURCES table/table.cc)
list(APPEND SOURCES table/table_builder.cc)
list(APPEND SOURCES table/two_level_iterator.cc)
list(APPEND SOURCES util/arena.cc)
list(APPEND SOURCES util/bloom.cc)
list(APPEND SOURCES util/cache.cc)
list(APPEND SOURCES util/coding.cc)
list(APPEND SOURCES util/comparator.cc)
list(APPEND SOURCES util/crc32c.cc)
list(APPEND SOURCES util/env.cc)
list(APPEND SOURCES util/filter_policy.cc)
list(APPEND SOURCES util/hash.cc)
list(APPEND SOURCES util/histogram.cc)
list(APPEND SOURCES util/logging.cc)
list(APPEND SOURCES util/options.cc)
list(APPEND SOURCES util/status.cc)
list(APPEND SOURCES db/zlib_compressor.cc)
list(APPEND SOURCES db/zstd_compressor.cc)
list(APPEND SOURCES port/port_posix_sse.cc)
include_directories(. include)

if (UNIX)
    list(APPEND SOURCES port/port_posix.cc)
    list(APPEND SOURCES util/env_posix.cc)

    add_definitions(-DLEVELDB_PLATFORM_POSIX "-DDLLX=")
    if(APPLE)
        add_definitions(-DOS_MACOSX)
    endif()

    CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)

    if(COMPILER_SUPPORTS_CXX11)
        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
    else()
        message(FATAL_ERROR "The compiler ${CMAKE_CXX_COMPILER} has no C++11 support. Please use a different C++ compiler.")
    endif()

elseif (WIN32)
    list(APPEND SOURCES port/port_win.cc)
    list(APPEND SOURCES util/env_win.cc)
    list(APPEND SOURCES util/win_logger.cc)
    add_definitions(-DLEVELDB_PLATFORM_WINDOWS "-DDLLX=__declspec(dllexport)")
endif()

add_library(leveldb SHARED ${SOURCES})

find_package(ZLIB REQUIRED)
if (ZLIB_FOUND)
    include_directories( ${ZLIB_INCLUDE_DIRS} )
    target_link_libraries( leveldb ${ZLIB_LIBRARIES} )
endif(ZLIB_FOUND)