使用cmake增強鏈接

Question

我正在使用linux，我的CMakeList.txt文件是

    cmake_minimum_required(VERSION 2.8)
    set(Boost_INCLUDE_DIR /usr/local/include)
    set(Boost_LIBRARY_DIR /usr/local/lib)
    set(CMAKE_CXX_FLAGS "-lboost_program_options")
    find_package(Boost 1.55 COMPONENTS system program_options filesystem REQUIRED)
    include_directories(${Boost_INCLUDE_DIR})
    link_directories(${Boost_LIBRARY_DIR})
    if(NOT Boost_FOUND)
    message(FATAL_ERROR "boost not found")
    endif()
    add_executable(main main.cpp)
    target_link_libraries( main ${Boost_LABRARIES} )

而且我收到以下錯誤。 我從兩天開始研究它，現在我已經厭倦了。 任何人都可以幫我嗎.cmake_

錯誤：

 main.cpp:(.text+0x1d): undefined reference to     
`boost::program_options::options_description::m_default_line_length'
 main.cpp:(.text+0x28): undefined reference to                                       
 `boost::program_options::options_description::m_default_line_length'

  main.cpp:(.text+0x6a): undefined reference to  
  `boost::program_options::options_description::options_description(std::string const&, unsigned int, unsigned int)'

  collect2: error: ld returned 1 exit status
  make[2]: *** [main] Error 1
  make[1]: *** [CMakeFiles/main.dir/all] Error 2
   make: *** [all] Error 2

Answer 1

您有一個錯字： Boost_LABRARIES應該是Boost_LIBRARIES 。 您還應該刪除SET(CMAKE_CXX_FLAGS ...行，這在使用CMake時不需要鏈接到庫（並且始終不可移植）。