CMake：对Boost库的未定义引用

Question

我通过这个添加了增强：

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），但是还可以。

我在Fedora中使用boost-devel软件包安装了boost。

Answer 1

看在源代码，Boost_LIBRARIES根据传递到组件列表填充find_package。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)