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# Copyright 2017 The LevelDB Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file. See the AUTHORS file for names of contributors.
cmake_minimum_required(VERSION 3.9)
project(leveldb VERSION 1.21.0 LANGUAGES C CXX)
# This project can use C11, but will gracefully decay down to C89.
set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED OFF)
set(CMAKE_C_EXTENSIONS OFF)
# This project requires C++11.
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
option(LEVELDB_BUILD_TESTS "Build LevelDB's unit tests" ON)
option(LEVELDB_BUILD_BENCHMARKS "Build LevelDB's benchmarks" ON)
option(LEVELDB_INSTALL "Install LevelDB's header and library" ON)
include(TestBigEndian)
test_big_endian(LEVELDB_IS_BIG_ENDIAN)
include(CheckIncludeFile)
check_include_file("unistd.h" HAVE_UNISTD_H)
include(CheckLibraryExists)
check_library_exists(crc32c crc32c_value "" HAVE_CRC32C)
check_library_exists(snappy snappy_compress "" HAVE_SNAPPY)
check_library_exists(tcmalloc malloc "" HAVE_TCMALLOC)
include(CheckSymbolExists)
check_symbol_exists(fdatasync "unistd.h" HAVE_FDATASYNC)
include(CheckCXXSourceCompiles)
# Test whether -Wthread-safety is available. See
# https://clang.llvm.org/docs/ThreadSafetyAnalysis.html
# -Werror is necessary because unknown attributes only generate warnings.
set(OLD_CMAKE_REQUIRED_FLAGS ${CMAKE_REQUIRED_FLAGS})
list(APPEND CMAKE_REQUIRED_FLAGS -Werror -Wthread-safety)
check_cxx_source_compiles("
struct __attribute__((lockable)) Lock {
void Acquire() __attribute__((exclusive_lock_function()));
void Release() __attribute__((unlock_function()));
};
struct ThreadSafeType {
Lock lock_;
int data_ __attribute__((guarded_by(lock_)));
};
int main() { return 0; }
" HAVE_CLANG_THREAD_SAFETY)
set(CMAKE_REQUIRED_FLAGS ${OLD_CMAKE_REQUIRED_FLAGS})
# Test whether C++17 __has_include is available.
check_cxx_source_compiles("
#if defined(__has_include) && __has_include(<string>)
#include <string>
#endif
int main() { std::string str; return 0; }
" HAVE_CXX17_HAS_INCLUDE)
set(LEVELDB_PUBLIC_INCLUDE_DIR "include/leveldb")
set(LEVELDB_PORT_CONFIG_DIR "include/port")
configure_file(
"${PROJECT_SOURCE_DIR}/port/port_config.h.in"
"${PROJECT_BINARY_DIR}/${LEVELDB_PORT_CONFIG_DIR}/port_config.h"
)
include_directories(
"${PROJECT_BINARY_DIR}/include"
"${PROJECT_SOURCE_DIR}"
)
if(BUILD_SHARED_LIBS)
# Only export LEVELDB_EXPORT symbols from the shared library.
add_compile_options(-fvisibility=hidden)
endif(BUILD_SHARED_LIBS)
add_library(leveldb "")
target_sources(leveldb
PRIVATE
"${PROJECT_BINARY_DIR}/${LEVELDB_PORT_CONFIG_DIR}/port_config.h"
"${PROJECT_SOURCE_DIR}/db/builder.cc"
"${PROJECT_SOURCE_DIR}/db/builder.h"
"${PROJECT_SOURCE_DIR}/db/c.cc"
"${PROJECT_SOURCE_DIR}/db/db_impl.cc"
"${PROJECT_SOURCE_DIR}/db/db_impl.h"
"${PROJECT_SOURCE_DIR}/db/db_iter.cc"
"${PROJECT_SOURCE_DIR}/db/db_iter.h"
"${PROJECT_SOURCE_DIR}/db/dbformat.cc"
"${PROJECT_SOURCE_DIR}/db/dbformat.h"
"${PROJECT_SOURCE_DIR}/db/dumpfile.cc"
"${PROJECT_SOURCE_DIR}/db/filename.cc"
"${PROJECT_SOURCE_DIR}/db/filename.h"
"${PROJECT_SOURCE_DIR}/db/log_format.h"
"${PROJECT_SOURCE_DIR}/db/log_reader.cc"
"${PROJECT_SOURCE_DIR}/db/log_reader.h"
"${PROJECT_SOURCE_DIR}/db/log_writer.cc"
"${PROJECT_SOURCE_DIR}/db/log_writer.h"
"${PROJECT_SOURCE_DIR}/db/memtable.cc"
"${PROJECT_SOURCE_DIR}/db/memtable.h"
"${PROJECT_SOURCE_DIR}/db/repair.cc"
"${PROJECT_SOURCE_DIR}/db/skiplist.h"
"${PROJECT_SOURCE_DIR}/db/snapshot.h"
"${PROJECT_SOURCE_DIR}/db/table_cache.cc"
"${PROJECT_SOURCE_DIR}/db/table_cache.h"
"${PROJECT_SOURCE_DIR}/db/version_edit.cc"
"${PROJECT_SOURCE_DIR}/db/version_edit.h"
"${PROJECT_SOURCE_DIR}/db/version_set.cc"
"${PROJECT_SOURCE_DIR}/db/version_set.h"
"${PROJECT_SOURCE_DIR}/db/write_batch_internal.h"
"${PROJECT_SOURCE_DIR}/db/write_batch.cc"
"${PROJECT_SOURCE_DIR}/port/atomic_pointer.h"
"${PROJECT_SOURCE_DIR}/port/port_stdcxx.h"
"${PROJECT_SOURCE_DIR}/port/port.h"
"${PROJECT_SOURCE_DIR}/port/thread_annotations.h"
"${PROJECT_SOURCE_DIR}/table/block_builder.cc"
"${PROJECT_SOURCE_DIR}/table/block_builder.h"
"${PROJECT_SOURCE_DIR}/table/block.cc"
"${PROJECT_SOURCE_DIR}/table/block.h"
"${PROJECT_SOURCE_DIR}/table/filter_block.cc"
"${PROJECT_SOURCE_DIR}/table/filter_block.h"
"${PROJECT_SOURCE_DIR}/table/format.cc"
"${PROJECT_SOURCE_DIR}/table/format.h"
"${PROJECT_SOURCE_DIR}/table/iterator_wrapper.h"
"${PROJECT_SOURCE_DIR}/table/iterator.cc"
"${PROJECT_SOURCE_DIR}/table/merger.cc"
"${PROJECT_SOURCE_DIR}/table/merger.h"
"${PROJECT_SOURCE_DIR}/table/table_builder.cc"
"${PROJECT_SOURCE_DIR}/table/table.cc"
"${PROJECT_SOURCE_DIR}/table/two_level_iterator.cc"
"${PROJECT_SOURCE_DIR}/table/two_level_iterator.h"
"${PROJECT_SOURCE_DIR}/util/arena.cc"
"${PROJECT_SOURCE_DIR}/util/arena.h"
"${PROJECT_SOURCE_DIR}/util/bloom.cc"
"${PROJECT_SOURCE_DIR}/util/cache.cc"
"${PROJECT_SOURCE_DIR}/util/coding.cc"
"${PROJECT_SOURCE_DIR}/util/coding.h"
"${PROJECT_SOURCE_DIR}/util/comparator.cc"
"${PROJECT_SOURCE_DIR}/util/crc32c.cc"
"${PROJECT_SOURCE_DIR}/util/crc32c.h"
"${PROJECT_SOURCE_DIR}/util/env.cc"
"${PROJECT_SOURCE_DIR}/util/filter_policy.cc"
"${PROJECT_SOURCE_DIR}/util/hash.cc"
"${PROJECT_SOURCE_DIR}/util/hash.h"
"${PROJECT_SOURCE_DIR}/util/logging.cc"
"${PROJECT_SOURCE_DIR}/util/logging.h"
"${PROJECT_SOURCE_DIR}/util/mutexlock.h"
"${PROJECT_SOURCE_DIR}/util/no_destructor.h"
"${PROJECT_SOURCE_DIR}/util/options.cc"
"${PROJECT_SOURCE_DIR}/util/random.h"
"${PROJECT_SOURCE_DIR}/util/status.cc"
# Only CMake 3.3+ supports PUBLIC sources in targets exported by "install".
$<$<VERSION_GREATER:CMAKE_VERSION,3.2>:PUBLIC>
"${LEVELDB_PUBLIC_INCLUDE_DIR}/c.h"
"${LEVELDB_PUBLIC_INCLUDE_DIR}/cache.h"
"${LEVELDB_PUBLIC_INCLUDE_DIR}/comparator.h"
"${LEVELDB_PUBLIC_INCLUDE_DIR}/db.h"
"${LEVELDB_PUBLIC_INCLUDE_DIR}/dumpfile.h"
"${LEVELDB_PUBLIC_INCLUDE_DIR}/env.h"
"${LEVELDB_PUBLIC_INCLUDE_DIR}/export.h"
"${LEVELDB_PUBLIC_INCLUDE_DIR}/filter_policy.h"
"${LEVELDB_PUBLIC_INCLUDE_DIR}/iterator.h"
"${LEVELDB_PUBLIC_INCLUDE_DIR}/options.h"
"${LEVELDB_PUBLIC_INCLUDE_DIR}/slice.h"
"${LEVELDB_PUBLIC_INCLUDE_DIR}/status.h"
"${LEVELDB_PUBLIC_INCLUDE_DIR}/table_builder.h"
"${LEVELDB_PUBLIC_INCLUDE_DIR}/table.h"
"${LEVELDB_PUBLIC_INCLUDE_DIR}/write_batch.h"
)
# POSIX code is specified separately so we can leave it out in the future.
target_sources(leveldb
PRIVATE
"${PROJECT_SOURCE_DIR}/util/env_posix.cc"
"${PROJECT_SOURCE_DIR}/util/posix_logger.h"
)
# MemEnv is not part of the interface and could be pulled to a separate library.
target_sources(leveldb
PRIVATE
"${PROJECT_SOURCE_DIR}/helpers/memenv/memenv.cc"
"${PROJECT_SOURCE_DIR}/helpers/memenv/memenv.h"
)
target_include_directories(leveldb
PUBLIC
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
)
target_compile_definitions(leveldb
PRIVATE
# Used by include/export.h when building shared libraries.
LEVELDB_COMPILE_LIBRARY
# Used by port/port.h.
LEVELDB_PLATFORM_POSIX=1
)
if (NOT HAVE_CXX17_HAS_INCLUDE)
target_compile_definitions(leveldb
PRIVATE
LEVELDB_HAS_PORT_CONFIG_H=1
)
endif(NOT HAVE_CXX17_HAS_INCLUDE)
if(BUILD_SHARED_LIBS)
target_compile_definitions(leveldb
PUBLIC
# Used by include/export.h.
LEVELDB_SHARED_LIBRARY
)
endif(BUILD_SHARED_LIBS)
if(HAVE_CLANG_THREAD_SAFETY)
target_compile_options(leveldb
PUBLIC
-Werror -Wthread-safety)
endif(HAVE_CLANG_THREAD_SAFETY)
if(HAVE_CRC32C)
target_link_libraries(leveldb crc32c)
endif(HAVE_CRC32C)
if(HAVE_SNAPPY)
target_link_libraries(leveldb snappy)
endif(HAVE_SNAPPY)
if(HAVE_TCMALLOC)
target_link_libraries(leveldb tcmalloc)
endif(HAVE_TCMALLOC)
# Needed by port_stdcxx.h
find_package(Threads REQUIRED)
target_link_libraries(leveldb Threads::Threads)
add_executable(leveldbutil
"${PROJECT_SOURCE_DIR}/db/leveldbutil.cc"
)
target_link_libraries(leveldbutil leveldb)
if(LEVELDB_BUILD_TESTS)
enable_testing()
function(leveldb_test test_file)
get_filename_component(test_target_name "${test_file}" NAME_WE)
add_executable("${test_target_name}" "")
target_sources("${test_target_name}"
PRIVATE
"${PROJECT_BINARY_DIR}/${LEVELDB_PORT_CONFIG_DIR}/port_config.h"
"${PROJECT_SOURCE_DIR}/util/testharness.cc"
"${PROJECT_SOURCE_DIR}/util/testharness.h"
"${PROJECT_SOURCE_DIR}/util/testutil.cc"
"${PROJECT_SOURCE_DIR}/util/testutil.h"
"${test_file}"
)
target_link_libraries("${test_target_name}" leveldb)
target_compile_definitions("${test_target_name}"
PRIVATE
LEVELDB_PLATFORM_POSIX=1
)
if (NOT HAVE_CXX17_HAS_INCLUDE)
target_compile_definitions("${test_target_name}"
PRIVATE
LEVELDB_HAS_PORT_CONFIG_H=1
)
endif(NOT HAVE_CXX17_HAS_INCLUDE)
add_test(NAME "${test_target_name}" COMMAND "${test_target_name}")
endfunction(leveldb_test)
leveldb_test("${PROJECT_SOURCE_DIR}/db/c_test.c")
leveldb_test("${PROJECT_SOURCE_DIR}/db/fault_injection_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/issues/issue178_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/issues/issue200_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/util/env_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/util/status_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/util/no_destructor_test.cc")
if(NOT BUILD_SHARED_LIBS)
leveldb_test("${PROJECT_SOURCE_DIR}/db/autocompact_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/db/corruption_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/db/db_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/db/dbformat_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/db/filename_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/db/log_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/db/recovery_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/db/skiplist_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/db/version_edit_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/db/version_set_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/db/write_batch_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/helpers/memenv/memenv_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/table/filter_block_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/table/table_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/util/arena_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/util/bloom_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/util/cache_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/util/coding_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/util/crc32c_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/util/hash_test.cc")
leveldb_test("${PROJECT_SOURCE_DIR}/util/logging_test.cc")
# TODO(costan): This test also uses
# "${PROJECT_SOURCE_DIR}/util/env_posix_test_helper.h"
leveldb_test("${PROJECT_SOURCE_DIR}/util/env_posix_test.cc")
endif(NOT BUILD_SHARED_LIBS)
endif(LEVELDB_BUILD_TESTS)
if(LEVELDB_BUILD_BENCHMARKS)
function(leveldb_benchmark bench_file)
get_filename_component(bench_target_name "${bench_file}" NAME_WE)
add_executable("${bench_target_name}" "")
target_sources("${bench_target_name}"
PRIVATE
"${PROJECT_BINARY_DIR}/${LEVELDB_PORT_CONFIG_DIR}/port_config.h"
"${PROJECT_SOURCE_DIR}/util/histogram.cc"
"${PROJECT_SOURCE_DIR}/util/histogram.h"
"${PROJECT_SOURCE_DIR}/util/testharness.cc"
"${PROJECT_SOURCE_DIR}/util/testharness.h"
"${PROJECT_SOURCE_DIR}/util/testutil.cc"
"${PROJECT_SOURCE_DIR}/util/testutil.h"
"${bench_file}"
)
target_link_libraries("${bench_target_name}" leveldb)
target_compile_definitions("${bench_target_name}"
PRIVATE
LEVELDB_PLATFORM_POSIX=1
)
if (NOT HAVE_CXX17_HAS_INCLUDE)
target_compile_definitions("${bench_target_name}"
PRIVATE
LEVELDB_HAS_PORT_CONFIG_H=1
)
endif(NOT HAVE_CXX17_HAS_INCLUDE)
endfunction(leveldb_benchmark)
if(NOT BUILD_SHARED_LIBS)
leveldb_benchmark("${PROJECT_SOURCE_DIR}/db/db_bench.cc")
endif(NOT BUILD_SHARED_LIBS)
check_library_exists(sqlite3 sqlite3_open "" HAVE_SQLITE3)
if(HAVE_SQLITE3)
leveldb_benchmark("${PROJECT_SOURCE_DIR}/doc/bench/db_bench_sqlite3.cc")
target_link_libraries(db_bench_sqlite3 sqlite3)
endif(HAVE_SQLITE3)
# check_library_exists is insufficient here because the library names have
# different manglings when compiled with clang or gcc, at least when installed
# with Homebrew on Mac.
set(OLD_CMAKE_REQURED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
list(APPEND CMAKE_REQUIRED_LIBRARIES kyotocabinet)
check_cxx_source_compiles("
#include <kcpolydb.h>
int main() {
kyotocabinet::TreeDB* db = new kyotocabinet::TreeDB();
delete db;
return 0;
}
" HAVE_KYOTOCABINET)
set(CMAKE_REQUIRED_LIBRARIES ${OLD_CMAKE_REQURED_LIBRARIES})
if(HAVE_KYOTOCABINET)
leveldb_benchmark("${PROJECT_SOURCE_DIR}/doc/bench/db_bench_tree_db.cc")
target_link_libraries(db_bench_tree_db kyotocabinet)
endif(HAVE_KYOTOCABINET)
endif(LEVELDB_BUILD_BENCHMARKS)
if(LEVELDB_INSTALL)
include(GNUInstallDirs)
install(TARGETS leveldb
EXPORT leveldbTargets
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
)
install(
FILES
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/c.h"
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/cache.h"
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/comparator.h"
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/db.h"
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/dumpfile.h"
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/env.h"
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/export.h"
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/filter_policy.h"
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/iterator.h"
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/options.h"
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/slice.h"
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/status.h"
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/table_builder.h"
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/table.h"
"${PROJECT_SOURCE_DIR}/${LEVELDB_PUBLIC_INCLUDE_DIR}/write_batch.h"
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/leveldb
)
include(CMakePackageConfigHelpers)
write_basic_package_version_file(
"${PROJECT_BINARY_DIR}/leveldbConfigVersion.cmake"
COMPATIBILITY SameMajorVersion
)
install(
EXPORT leveldbTargets
NAMESPACE leveldb::
DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/leveldb"
)
install(
FILES
"${PROJECT_SOURCE_DIR}/cmake/leveldbConfig.cmake"
"${PROJECT_BINARY_DIR}/leveldbConfigVersion.cmake"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/leveldb"
)
endif(LEVELDB_INSTALL)