cmake:vs2015/MinGW静态编译leveldb
leveldb是google的开源项目(https://github.com/google/leveldb), 在linux下编译很方便，然而官方版本却没有提供在windows下的编译方式，好麻烦。还好，开源的世界热心人很多，同样在github上找到了cmake编译版本(https://github.com/bureau14/leveldb),有了cmake版本，windows下编译的问题就解决了一大半，下载这个版本的源码在windows用vs2015编译通过。但执行nmake install后发现，cmake脚本提供的安装功能不完整，只安装了bin文件夹。于是手工修改了CMakeLists.txt，才能完整安装。
修改CMakeLists.txt
修改后的CMakeLists.txt如下(搜索guyadong标记，可以找到所有添加的代码)
cmake_minimum_required(VERSION 3.0.2 FATAL_ERROR)
project(leveldb CXX)
set(CMAKE_DEBUG_POSTFIX "d")
set(Boost_USE_STATIC_LIBS ON)
set(Boost_USE_MULTITHREAD ON)
set(Boost_USE_STATIC_RUNTIME OFF)
find_package(Boost COMPONENTS
date_time
filesystem
system
REQUIRED)
set(SNAPPY_LIBRARY "")
string(REGEX MATCH "clang" CLANG ${CMAKE_CXX_COMPILER})
if(CMAKE_COMPILER_IS_GNUCXX OR CLANG)
find_library(Pthread_LIBRARY pthread)
find_library(Realtime_LIBRARY rt)
# find library can be problematic with stdc++ which is why we hardwire the link
set(Stdcpp_LIBRARY stdc++)
else(CMAKE_COMPILER_IS_GNUCXX OR CLANG)
set(Pthread_LIBRARY "")
set(Realtime_LIBRARY "")
set(Stdcpp_LIBRARY "")
endif(CMAKE_COMPILER_IS_GNUCXX OR CLANG)
include_directories(${Boost_INCLUDE_DIRS}
${CMAKE_CURRENT_SOURCE_DIR}
include)
if(MSVC)
add_compile_options(
/D_CRT_SECURE_NO_WARNINGS
/wd4389 # signed/unsigned mismatch
/wd4800 # constructor never returns, potential memory leak because of a singleton pattern
/wd4722 # unreachable code because of singleton pattern
/wd4702 # bool cast performance warning
)
else()
add_compile_options(
-Wno-sign-compare
-std=c++11
)
endif()
add_definitions(
-DLEVELDB_ATOMIC_PRESENT
)
set(LEVEL_DB_FILES
include/leveldb/c.h
include/leveldb/cache.h
include/leveldb/comparator.h
include/leveldb/db.h
include/leveldb/dumpfile.h
include/leveldb/env.h
include/leveldb/iterator.h
include/leveldb/filter_policy.h
include/leveldb/iterator.h
include/leveldb/options.h
include/leveldb/slice.h
include/leveldb/status.h
include/leveldb/table.h
include/leveldb/table_builder.h
include/leveldb/write_batch.h
db/builder.cc
db/builder.h
db/db_impl.cc
db/db_impl.h
db/db_iter.cc
db/db_iter.h
db/dbformat.cc
db/dbformat.h
db/dumpfile.cc
db/filename.cc
db/filename.h
db/log_format.h
db/log_reader.cc
db/log_reader.h
db/log_writer.cc
db/log_writer.h
db/skiplist.h
db/snapshot.h
db/memtable.cc
db/memtable.h
db/repair.cc
db/table_cache.cc
db/table_cache.h
db/version_edit.cc
db/version_edit.h
db/version_set.cc
db/version_set.h
db/write_batch.cc
table/block.cc
table/block.h
table/block_builder.cc
table/block_builder.h
table/filter_block.cc
table/filter_block.h
table/format.cc
table/format.h
table/iterator.cc
table/iterator_wrapper.h
table/merger.cc
table/merger.h
table/table.cc
table/table_builder.cc
table/two_level_iterator.cc
table/two_level_iterator.h
util/arena.cc
util/arena.h
util/bloom.cc
util/cache.cc
util/coding.cc
util/coding.h
util/comparator.cc
util/crc32c.cc
util/crc32c.h
util/env.cc
util/filter_policy.cc
util/hash.cc
util/hash.h
util/histogram.cc
util/histogram.h
util/logging.cc
util/logging.h
util/mutexlock.h
util/options.cc
util/random.h
util/status.cc
port/port.h)
if(WIN32)
list(APPEND LEVEL_DB_FILES
port/port_win.h
port/port_win.cc
util/win_logger.h
util/win_logger.cc
util/env_boost.cc)
else()
list(APPEND LEVEL_DB_FILES
port/port_posix.h
port/port_posix.cc
util/posix_logger.h
util/env_posix.cc)
endif()
add_library(leveldb ${LEVEL_DB_FILES})
target_include_directories(leveldb
PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/include
PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
)
target_link_libraries(leveldb
PRIVATE
${Boost_LIBRARIES}
${Pthread_LIBRARY}
)
add_executable(leveldbutil
db/leveldb_main.cc)
target_link_libraries(leveldbutil
leveldb)
set_target_properties(leveldbutil PROPERTIES
DEBUG_POSTFIX ${CMAKE_DEBUG_POSTFIX})
# we distribute the leveldbutil as it might be useful
install(TARGETS leveldbutil
RUNTIME DESTINATION bin
LIBRARY DESTINATION lib
ARCHIVE DESTINATION lib)
# modified by guyadong
# 将 leveldb 库安装到 lib下
install(TARGETS leveldb
LIBRARY DESTINATION lib
ARCHIVE DESTINATION lib)
# 复制 include 文件夹
install(DIRECTORY include DESTINATION .)
# end of modified by guyadong
##################################### TESTS #######################################
# Every leveldb test file has to be compiled as an independant binary
# because of the test framework used by leveldb.
add_library(leveldb_test_rt
util/testutil.h
util/testutil.cc
util/testharness.h
util/testharness.cc)
target_include_directories(leveldb_test_rt
PUBLIC ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/include
)
add_custom_target(RUN_LEVELDB_UNIT_TESTS
COMMAND ${CMAKE_CTEST_COMMAND}
--build-config ${CMAKE_CFG_INTDIR}
--output-log LevelDB_test_${CMAKE_CFG_INTDIR}.log
--output-on-failure
--tests-regex leveldb
COMMENT "Running all LevelDB unit tests"
)
function(LEVELDB_ADD_TEST TESTNAME TESTFILE)
if(NOT TESTNAME)
message(SEND_ERROR "Error: LEVELDB_ADD_TEST called without test name")
return()
endif(NOT TESTNAME)
if(NOT TESTFILE)
message(SEND_ERROR "Error: LEVELDB_ADD_TEST called without test file")
return()
endif(NOT TESTFILE)
add_executable(leveldb_${TESTNAME}_test
${TESTFILE})
target_link_libraries(leveldb_${TESTNAME}_test
leveldb_test_rt
leveldb)
set_target_properties(leveldb_${TESTNAME}_test PROPERTIES
DEBUG_POSTFIX ${CMAKE_DEBUG_POSTFIX})
add_test(NAME leveldb_${TESTNAME}_test COMMAND leveldb_${TESTNAME}_test)
add_dependencies(RUN_LEVELDB_UNIT_TESTS leveldb_${TESTNAME}_test)
# modified by guyadong
# 将所有测试程序安装到 bin 下
install(TARGETS leveldb_${TESTNAME}_test RUNTIME DESTINATION bin)
# end of modified by guyadong
endfunction(LEVELDB_ADD_TEST)
LEVELDB_ADD_TEST(env util/env_test.cc)
LEVELDB_ADD_TEST(crc32 util/crc32c_test.cc)
LEVELDB_ADD_TEST(coding util/coding_test.cc)
LEVELDB_ADD_TEST(arena util/arena_test.cc)
LEVELDB_ADD_TEST(cache util/cache_test.cc)
LEVELDB_ADD_TEST(table table/table_test.cc)
# IMPORTANT: Commented a test that fails randomly.
# LEVELDB_ADD_TEST(autocompact db/autocompact_test.cc)
LEVELDB_ADD_TEST(corruption db/corruption_test.cc)
LEVELDB_ADD_TEST(dbformat db/dbformat_test.cc)
LEVELDB_ADD_TEST(filename db/filename_test.cc)
LEVELDB_ADD_TEST(log db/log_test.cc)
LEVELDB_ADD_TEST(skiplist db/skiplist_test.cc)
LEVELDB_ADD_TEST(version_edit db/version_edit_test.cc)
LEVELDB_ADD_TEST(write_batch db/write_batch_test.cc)
LEVELDB_ADD_TEST(version_set db/version_set_test.cc)
LEVELDB_ADD_TEST(filter_block table/filter_block_test.cc)
LEVELDB_ADD_TEST(bloom util/bloom_test.cc)
LEVELDB_ADD_TEST(hash util/hash_test.cc)
LEVELDB_ADD_TEST(db_bench db/db_bench.cc)
LEVELDB_ADD_TEST(db db/db_test.cc)可以从这里下载修改后的CMakeLists.txt
https://code.csdn.net/10km/caffe-static/tree/master/patch/leveldb-master/CMakeLists.txt
cmake编译leveldb
修改好CMakeLists.txt后，开始cmake 编译leveldb。下面是脚本编译过程
rem 创建 vs2015 x64编译环境
rem 如果要编译32位版本，则将后面的x86_amd64改为x86
call "%VS140COMNTOOLS%\..\..\VC\vcvarsall.bat" x86_amd64
mkdir build.gcc
cd build.gcc
rem %install_path% 安装路径
rem %boost_root% boost 安装路径
rem 注意这个版本的leveldb需要 boost 支持，编译前请确保有安装boost
rem (我用的boost版本是 1.62)
rem BOOST_ROOT 用于指定 boost 的安装位置
rem 如果你的boost是默认安装到C:\boost，不指定BOOST_ROOT，cmake也能找到boost的位置
cmake .. -G "NMake Makefiles" -DCMAKE_BUILD_TYPE:STRING=RELEASE ^
-DBOOST_ROOT=%boost_root% ^
-DBUILD_SHARED_LIBS=off ^
-DCMAKE_INSTALL_PREFIX=%install_path%
rem 编译并安装到CMAKE_INSTALL_PREFIX指定的位置
nmake install
cd .. 解决MinGW编译报错
利用上面的CMakeLists.txt也可以用MinGW编译。
但如果用MinGW编译,会有如下报错：
[ 1%] Building CXX object CMakeFiles/leveldb.dir/port/port_win.cc.obj
In file included from P:/MinGW/mingw64/x86_64-w64-mingw32/include/locale.h:12:0,
from P:/MinGW/mingw64/x86_64-w64-mingw32/include/c++/clocale:42,
from P:/MinGW/mingw64/x86_64-w64-mingw32/include/c++/x86_64-w64-mingw32/bits/c++locale.h:41,
from P:/MinGW/mingw64/x86_64-w64-mingw32/include/c++/bits/localefwd.h:40,
from P:/MinGW/mingw64/x86_64-w64-mingw32/include/c++/string:43,
from D:/caffe-static/source/leveldb-master/port/port_win.h:44,
from D:\caffe-static\source\leveldb-master\port\port_win.cc:31:
P:/MinGW/mingw64/x86_64-w64-mingw32/include/stdio.h:528:110: error: conflicting declaration of 'int _snprintf(char*, size_t, const char*, ...)' with 'C' linkage
_CRTIMP int __cdecl _snprintf(char * __restrict__ _Dest,size_t _Count,const char * __restrict__ _Format,...) __MINGW_ATTRIB_DEPRECATED_SEC_WARN;
^
In file included from D:\caffe-static\source\leveldb-master\port\port_win.cc:31:0:
D:/caffe-static/source/leveldb-master/port/port_win.h:35:18: note: previous declaration with 'C++' linkage
#define snprintf _snprintf
^
In file included from P:/MinGW/mingw64/x86_64-w64-mingw32/include/c++/ext/string_conversions.h:43:0,
from P:/MinGW/mingw64/x86_64-w64-mingw32/include/c++/bits/basic_string.h:5247,
from P:/MinGW/mingw64/x86_64-w64-mingw32/include/c++/string:52,
from D:/caffe-static/source/leveldb-master/port/port_win.h:44,
from D:\caffe-static\source\leveldb-master\port\port_win.cc:31:
P:/MinGW/mingw64/x86_64-w64-mingw32/include/c++/cstdio:175:11: error: '::snprintf' has not been declared
using ::snprintf;
^
P:/MinGW/mingw64/x86_64-w64-mingw32/include/c++/cstdio:185:22: error: '__gnu_cxx::snprintf' has not been declared
using ::__gnu_cxx::snprintf;
^
CMakeFiles\leveldb.dir\build.make:962: recipe for target 'CMakeFiles/leveldb.dir/port/port_win.cc.obj' failed
make[2]: *** [CMakeFiles/leveldb.dir/port/port_win.cc.obj] Error 1
CMakeFiles\Makefile2:141: recipe for target 'CMakeFiles/leveldb.dir/all' failed
make[1]: *** [CMakeFiles/leveldb.dir/all] Error 2
makefile:128: recipe for target 'all' failed
make: *** [all] Error 2原因是port/port_win.h中关于snprintf的宏定义#if判断语句有漏洞，只考虑了MSVC编译的情况，却没有考虑MinGW的情况。所以要做如下修改
// 原来的判断只考虑了MSVC，当用MinGW编译时 _MSC_VER < 1900条件也成立，所以就出错了，
// 所以这里多加一个条件限制 defined(_MSC_VER)，MinGW编译时就不会进入这个分支
//#if _MSC_VER < 1900
#if defined(_MSC_VER) && _MSC_VER < 1900
#define snprintf _snprintf
#endif解决了这个问题，再make,编译是通过了,但连接时会报错:
libleveldb.a(env_boost.cc.obj):env_boost.cc:(.text+0x46b): undefined reference to `std::basic_filebuf >::_close()'
libleveldb.a(env_boost.cc.obj):env_boost.cc:(.text+0x64b): undefined reference to `std::basic_filebuf >::_close()'
libleveldb.a(env_boost.cc.obj):env_boost.cc:(.text+0x2a46): undefined reference to `std::basic_filebuf >::_close()'
libleveldb.a(env_boost.cc.obj):env_boost.cc:(.text+0x2be9): undefined reference to `std::basic_filebuf >::_close()'
libleveldb.a(env_boost.cc.obj):env_boost.cc:(.text+0x3235): undefined reference to `std::basic_filebuf >::_close()'
libleveldb.a(env_boost.cc.obj):env_boost.cc:(.text+0x3b19): more undefined references to `std::basic_filebuf >::_close()' follow其实问题还是出在port/port_win.h,就在我们刚才修改的那段代码下面有一行
#define close _close就是它造成的。注释掉这一行代码，即可，并且注释掉这一行代码在MSVC(VS2013,VS2015)也都不会报错
可以从这里下载修改后的port_win.h
https://code.csdn.net/10km/caffe-static/tree/master/patch/leveldb-master/port/port_win.h