CMake,glfw：包含X11，但未找到“xConvertSelection”

Question

/usr/bin/ld://usr/local/lib/libglfw3.a(x11_windod.co):对符号“xconvertselection”的未定义引用/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../../x86_64-linux-gnu/4.8/.so:添加符号错误：命令行中缺少DSOcollect2:错误：ld返回1退出状态

XConvertSelection似乎来自X11，但我已经包含并链接到X11，如下所示。如果X11已经被包括和链接，为什么没有找到这个项目？

===src/cmakelists.txt===

# SOURCE CMAKELISTS

cmake_minimum_required( VERSION 2.6 )
project( HelloTriangle )

# ~ Special Libraries ~

# First you need to find the PkgConfig package. If this fails, you may need to install the pkg-config package for your distribution.
find_package(PkgConfig REQUIRED)

find_package(X11 REQUIRED)
if(NOT X11_FOUND)
    message("ERROR: x11 not found")
endif(NOT X11_FOUND)

# Note that the dependencies do not include OpenGL or GLU, as GLFW loads any OpenGL, OpenGL ES or Vulkan libraries it needs at runtime and does not use GLU. If your application calls OpenGL directly, instead of using a modern extension loader library you can find it by requiring the OpenGL package.
find_package(OpenGL REQUIRED)
if(NOT OPENGL_FOUND)
    message("ERROR: OpenGL not found")
endif(NOT OPENGL_FOUND)

# With just a few changes to your CMakeLists.txt, you can locate the package and target files generated when GLFW is installed.
find_package(glfw3 3.2 REQUIRED)

# This creates the CMake commands to find pkg-config packages. Then you need to find the GLFW package.
pkg_search_module(GLFW REQUIRED glfw3)

include_directories(${X11_INCLUDE_DIR})

# This creates the CMake variables you need to use GLFW. To be able to include the GLFW header, you need to tell your compiler where it is.
include_directories(${GLFW_INCLUDE_DIRS})

# After everything is included, add the executable so that we can link
add_executable( HelloTriangle hello_triangle.cpp )

target_link_libraries(HelloTriangle ${X11_LIBRARIES})

# Seems like a similar issue: http://stackoverflow.com/questions/14772681/c-compile-error-when-includeing-irrlicht-static-lib
target_link_libraries(HelloTriangle /usr/lib/x86_64-linux-gnu/libX11.so)
target_link_libraries(HelloTriangle /usr/lib/x86_64-linux-gnu/libXxf86vm.so.1)
# target_link_libraries(HelloTriangle /usr/lib/x86_64-linux-gnu/libXxf86vm.so)

# If OpenGL is found, the OPENGL_FOUND variable is true and the OPENGL_INCLUDE_DIR and OPENGL_gl_LIBRARY cache variables can be used.
target_include_directories(HelloTriangle PUBLIC ${OPENGL_INCLUDE_DIR})

target_link_libraries(HelloTriangle ${OPENGL_gl_LIBRARY})

target_link_libraries(HelloTriangle ${GL_LIBRARY})

# The OpenGL CMake package also looks for GLU. If GLU is found, the OPENGL_GLU_FOUND variable is true and the OPENGL_INCLUDE_DIR and OPENGL_glu_LIBRARY cache variables can be used.
target_link_libraries(HelloTriangle ${OPENGL_glu_LIBRARY})

# You also need to link against the correct libraries. If you are using the shared library version of GLFW, use the GLFW_LIBRARIES variable.
target_link_libraries(HelloTriangle ${GLFW_LIBRARIES}) # DYNAMIC: Does not find: XConvertSelection
# If you are using the static library version of GLFW, use the GLFW_STATIC_LIBRARIES variable instead.
# target_link_libraries(HelloTriangle ${GLFW_STATIC_LIBRARIES}) # STATIC: Does not find: glewExperimental , glewInit




Answer 1

在深入研究这个问题并与链接顺序进行了几个小时的斗争后，我有以下内容：

===src/cmakelists.txt===

# SOURCE CMAKELISTS

cmake_minimum_required( VERSION 2.6 )
project( HelloTriangle )

# ~ Special Libraries ~
find_package(PkgConfig REQUIRED) # First you need to find the PkgConfig package

find_package(X11 REQUIRED) # Make sure x is there 
if(NOT X11_FOUND)
    message("ERROR: x11 not found")
endif(NOT X11_FOUND)

find_package(OpenGL REQUIRED) # Make sure OpenGL is available for direct calls
if(NOT OPENGL_FOUND)
    message("ERROR: OpenGL not found")
endif(NOT OPENGL_FOUND)

find_package(glfw3 3.2 REQUIRED) # locate the package and target files generated when GLFW is installed.

pkg_search_module(GLFW REQUIRED glfw3) # CMake commands to find pkg-config packages

include_directories(${GLFW_INCLUDE_DIRS}) # creates the CMake variables you need to use GLFW.
include_directories(${X11_INCLUDE_DIR}) # Get all the x stuff

add_executable( HelloTriangle hello_triangle.cpp ) # After everything is included, add the executable 

target_include_directories(HelloTriangle PUBLIC ${OPENGL_INCLUDE_DIR}) # Obviously

target_link_libraries(HelloTriangle ${GLFW_LIBRARIES}) # If using the shared library, GLFW_LIBRARIES
# target_link_libraries(HelloTriangle ${GLFW_STATIC_LIBRARIES}) # If using the static library, GLFW_STATIC_LIBRARIES
target_link_libraries(HelloTriangle ${OPENGL_gl_LIBRARY}) # More OpenGL stuff I guess?
target_link_libraries(HelloTriangle ${GL_LIBRARY})
target_link_libraries(HelloTriangle ${OPENGL_glu_LIBRARY}) # The OpenGL CMake package also looks for GLU.
# http://stackoverflow.com/questions/23171894/cant-compile-easy-source-in-c-and-opengl-glfw-in-linux-in-netbeans
target_link_libraries(HelloTriangle GLEW m dl Xinerama Xrandr Xi Xcursor pthread) # GLFW misses this stuff!
# Seems like a similar issue: http://stackoverflow.com/questions/14772681/c-compile-error-when-includeing-irrlicht-static-lib
target_link_libraries(HelloTriangle /usr/lib/x86_64-linux-gnu/libX11.so) # x11 linking misses this stuff!
target_link_libraries(HelloTriangle /usr/lib/x86_64-linux-gnu/libXxf86vm.so.1)
target_link_libraries(HelloTriangle ${X11_LIBRARIES}) # x11 !

这个确切的设置可能在Linux系统上不是通用的，但我认为它可能会帮助某人找到一个成功的链接顺序。