我有自己的库mylib
,该库使用Boost序列化库并进行动态链接。现在,我想将我的库链接到另一个代码-命令如下:
/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
如您所见,我不仅链接libmylib.so
,而且链接libboost_serialization.so
,因此不应缺少任何依赖项。
仍然,我得到了这个未定义的参考错误。更加令人困惑,因为我已经将其链接到我的库,因此,如果我理解正确的话,就不需要在这里使用它。
你知道吗,我在做什么错了?
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,我添加了
target_link_libraries(mylib PUBLIC ${BOOST_LIBRARIES})
带我的库的CMakeLists和
target_link_libraries(net_test_1 PUBLIC mylib)
带有我的可执行文件的CMakeLists。
我还从LINK_LIBRARIES
中删除了带有set_target_properties()
的行,但不幸的是,它没有任何改变,问题仍然存在。
我已根据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,它可以正常工作而不会出现错误。那怎么可能?我认为,在命令中添加../../external_dependencies/boost/stage/lib/libboost_serialization.so
就足够了,因为它指向正确的库。
答案 0 :(得分:0)
因此,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
app / CMakeLists.txt:
add_executable(app app.cpp)
target_include_directories(app PUBLIC mylib)
target_link_libraries(app PUBLIC mylib)
mylib / 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})
主要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,因为这些变量是按照与您的系统安装相匹配的方式获得的。您随时可以通过doc并影响您需要的任何方面。