我有自己的库mylib
,它使用Boost序列化库并动态链接它。现在我想将我的库链接到另一个代码 - 命令如下所示:
/usr/bin/g++-8 -Wall -g -rdynamic CMakeFiles/net_test_ode_1.dir/net_test_ode_1.cpp.o -o ../bin/examples/net_test_ode_1 -Wl,-rpath,/home/martin/MyLib/build/lib:/home/martin/MyLib/external_dependencies/boost/stage/lib ../lib/libmylib.so ../../external_dependencies/boost/stage/lib/libboost_system.so ../../external_dependencies/boost/stage/lib/libboost_serialization.so ../../external_dependencies/boost/stage/lib/libboost_random.so
../lib/libmylib.so: undefined reference to `boost::serialization::singleton_module::get_lock()'
collect2: error: ld returned 1 exit status
正如你所看到的,我不仅链接libmylib.so
,还链接libboost_serialization.so
,所以不应该有任何遗漏的依赖关系。
不过,我得到了这个未定义的引用错误。它更令人困惑,因为我已经将它链接到我的库,所以如果我理解正确,就不应该在这里使用它。
你知道吗,我做错了什么?
if ("${BUILD_LIB}" STREQUAL "yes")
add_library(mylib SHARED
source codes...
)
set_target_properties(
mylib
PROPERTIES
INCLUDE_DIRECTORIES "${ROOT_DIR}/include;${SRC_DIR};${Boost_INCLUDE_DIRS}"
LINK_LIBRARIES "${BOOST_LIBRARIES}"
ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib"
LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib"
RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/bin"
)
add_executable(net_test_1 net_test_1.cpp)
set_target_properties(
net_test_1
PROPERTIES
INCLUDE_DIRECTORIES "${ROOT_DIR}/include"
LINK_LIBRARIES "mylib;${BOOST_LIBRARIES}"
ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib/"
LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/lib"
RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/bin/examples"
)
根据compor的评论,我补充道
target_link_libraries(mylib PUBLIC ${BOOST_LIBRARIES})
用我的图书馆和CMakeLists到
target_link_libraries(net_test_1 PUBLIC mylib)
使用我的可执行文件到CMakeLists。
我还从LINK_LIBRARIES
删除了与set_target_properties()
的一行,但不幸的是,它没有改变任何东西,问题仍然存在。
我根据ChrisD的评论尝试使用-rpath-link
,但结果仍然相同
/usr/bin/g++ -Wall -g -rdynamic CMakeFiles/net_test_ode_1.dir/net_test_ode_1.cpp.o -o ../bin/examples/net_test_ode_1 -Wl,-rpath-link=/home/martin/MyLibRepo/external_dependencies/boost/stage/lib ../lib/libmylib.so ../../external_dependencies/boost/stage/lib/libboost_system.so ../../external_dependencies/boost/stage/lib/libboost_serialization.so ../../external_dependencies/boost/stage/lib/libboost_random.so
../lib/libmylib.so: undefined reference to `boost::serialization::singleton_module::get_lock()'
我发现,当我将-lboost_serialization
添加到编译命令时,它没有错误。怎么可能?我想,将../../external_dependencies/boost/stage/lib/libboost_serialization.so
添加到命令就足够了,因为它指向正确的库。
所以,我想到了一个使用序列化库的最小Boost项目。
项目结构:
.
├── app
│ ├── app.cpp
│ └── CMakeLists.txt
├── CMakeLists.txt
└── mylib
├── CMakeLists.txt
├── mylib.cpp
└── mylib.hpp
应用程序/的CMakeLists.txt:
add_executable(app app.cpp)
target_include_directories(app PUBLIC mylib)
target_link_libraries(app PUBLIC mylib)
MYLIB /的CMakeLists.txt:
add_library(mylib mylib.cpp)
target_include_directories(mylib PUBLIC
${CMAKE_CURRENT_SOURCE_DIR}
${Boost_INCLUDE_DIRS})
target_link_libraries(mylib PUBLIC ${Boost_LIBRARIES})
主CMakeLists.txt:
cmake_minimum_required(VERSION 3.11)
project(ser CXX)
find_package(Boost COMPONENTS serialization REQUIRED)
add_subdirectory(app)
add_subdirectory(mylib)
我相信您需要使用find_package
设置的变量,因为这些变量的采购方式与您的系统安装相匹配。你总是可以通过doc并影响你需要的任何方面。