c++ - CMake:对 boost 库的 undefined reference

Question

我通过这个添加了 boost :

set(Boost_USE_STATIC_LIBS        ON) 
set(Boost_USE_MULTITHREADED      ON)
set(Boost_USE_STATIC_RUNTIME    OFF)
find_package(Boost REQUIRED)
include_directories(${Boost_INCLUDE_DIR})

project(APP C CXX)
add_executable(APP src.cpp)
target_link_libraries(APP ${Boost_LIBRARIES})

当我编译源代码时，我得到:

demo.cpp:(.text+0x3d3): undefined reference to `boost::system::generic_category()'

我检查了拼写(Boost_LIBRARIES 与 BOOST_LIBRARIES)但没问题。

我使用包 boost-devel 在 Fedora 中安装了 boost。

Answer 1

在 source code 中查找，Boost_LIBRARIES根据传给find_package的组件列表进行填充。尝试:

find_package(Boost REQUIRED COMPONENTS system)

您还应该使用导入的目标:

set(Boost_USE_STATIC_LIBS        ON)
set(Boost_USE_MULTITHREADED      ON)
set(Boost_USE_STATIC_RUNTIME    OFF)
find_package(Boost REQUIRED COMPONENTS system)

# the call to include_directories is now useless:
# the Boost::system imported target used below
# embeds the include directories

project(APP C CXX)
add_executable(APP src.cpp)
target_link_libraries(APP Boost::system)