对`boost::system::generic_category() 的未定义引用答案

【问题标题】：undefined reference to `boost::system::generic_category()对`boost::system::generic_category() 的未定义引用
【发布时间】：2021-05-16 06:38:51
【问题描述】：

我正在 Clion 中开发一个 cpp 项目。对于构建，我使用 cmake。上周末我从 ubuntu 18.04 升级到 20.04，从那时起我无法构建我的项目并且我收到错误： /usr/local/include/boost/system/error_code.hpp:221: undefined reference to `boost::system::generic_category()'。似乎链接中的某些内容不正确。我重新安装了所有软件包，尝试了不同的版本，但没有。我的 CMakeLists.txt 是：

cmake_minimum_required(VERSION 3.7)
project(pki_cpp)

set(CMAKE_CXX_STANDARD 11)
set(THREADS_PREFER_PTHREAD_FLAG ON)
#find_package(libmongocxx REQUIRED)
find_package(mongocxx REQUIRED)
find_package(bsoncxx REQUIRED)
include_directories(${LIBMONGOCXX_INCLUDE_DIR})
include_directories(${LIBBSONCXX_INCLUDE_DIR})

include_directories(SYSTEM ./lib)
set(BOOST_ROOT /usr/lib/)

find_package(Boost 1.71.0 REQUIRED COMPONENTS system chrono thread filesystem)
include_directories(${Boost_INCLUDE_DIR})
if(NOT Boost_FOUND)
    message(FATAL_ERROR "Could not find boost!")
endif()
find_package(Threads REQUIRED)
find_package(OpenSSL REQUIRED)


# A custom library
add_subdirectory(asnDatatypes)
include_directories({CMAKE_CURRENT_SOURCE_DIR} asnDatatypes)
set_property(TARGET asnLibrary PROPERTY POSITION_INDEPENDENT_CODE ON)
# end custom library

#cryptopp library
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/contrib/cmake")
find_package(CryptoPP REQUIRED)
include_directories(${CRYPTOPP_INCLUDE_DIR})
link_directories(${CryptoPP_INCLUDE_DIR})
# end cryptopp

add_executable(pki_cpp main.cpp rootCA.cpp rootCA.h)
target_include_directories(pki_cpp PRIVATE ${Boost_INCLUDE_DIRS} ${LIBMONGOCXX_INCLUDE_DIRS} )
link_directories(pki_cpp ${Boost_LIBRARY_DIRS})
target_link_libraries(pki_cpp ${Boost_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT} ${Boost_FILESYSTEM_LIBRARY} ${Boost_SYSTEM_LIBRARY} ${Boost_LIBRARIES} Boost::system Threads::Threads  boost_system asnLibrary OpenSSL::SSL ${CRYPTOPP_LIBRARIES} ${LIBMONGOCXX_LIBRARIES} mongo::bsoncxx_shared mongo::mongocxx_shared ${CMAKE_THREAD_LIBS_INIT} ${Boost_FILESYSTEM_LIBRARY} ${Boost_SYSTEM_LIBRARY} Boost::system)

感谢任何帮助！

【问题讨论】：

标签： c++ linux boost cmake

【解决方案1】：

这是很多东西，都是随机排序和注释掉的。明显的错误是链接升压系统失败

我会去的

FIND_PACKAGE(Boost 1.65.0
     COMPONENTS system program_options REQUIRED)

LINK_DIRECTORIES(${Boost_LIBRARY_DIRS})
INCLUDE_DIRECTORIES(${Boost_INLUDE_DIRS})
LINK_LIBRARIES(${Boost_LIBRARIES})

或者，您可以是特定的并将特定的库链接到特定的目标

TARGET_LINK_LIBRARIES(mylib ${Boost_SYSTEM_LIBRARY})
TARGET_LINK_LIBRARIES(myexecutable ${Boost_THREAD_LIBRARY})

【讨论】：