GLFW3 - 对 XRR 的未定义引用

Question

我正在尝试编译一个使用 GLFW3 的非常简单的OpenGL program。尽管链接了我认为必要的所有内容，但我得到了大量未定义的引用。

/usr/local/lib/libglfw3.a(x11_gamma.c.o): In function `_glfwInitGammaRamp':
x11_gamma.c:(.text+0x49): undefined reference to `XRRGetScreenResources'
x11_gamma.c:(.text+0x6a): undefined reference to `XRRGetCrtcGammaSize'
x11_gamma.c:(.text+0x81): undefined reference to `XRRFreeScreenResources'
/usr/local/lib/libglfw3.a(x11_gamma.c.o): In function `_glfwPlatformGetGammaRamp':
x11_gamma.c:(.text+0xce): undefined reference to `XRRGetCrtcGammaSize'
x11_gamma.c:(.text+0xf1): undefined reference to `XRRGetCrtcGamma'
x11_gamma.c:(.text+0x198): undefined reference to `XRRFreeGamma'
/usr/local/lib/libglfw3.a(x11_gamma.c.o): In function `_glfwPlatformSetGammaRamp':
x11_gamma.c:(.text+0x24c): undefined reference to `XRRAllocGamma'
x11_gamma.c:(.text+0x303): undefined reference to `XRRSetCrtcGamma'
x11_gamma.c:(.text+0x30f): undefined reference to `XRRFreeGamma'
/usr/local/lib/libglfw3.a(x11_init.c.o): In function `initExtensions':
x11_init.c:(.text+0x1a67): undefined reference to `XRRQueryExtension'
x11_init.c:(.text+0x1a91): undefined reference to `XRRQueryVersion'
x11_init.c:(.text+0x1b25): undefined reference to `XIQueryVersion'
/usr/local/lib/libglfw3.a(x11_monitor.c.o): In function `_glfwSetVideoMode':
x11_monitor.c:(.text+0x177): undefined reference to `XRRGetScreenResources'
x11_monitor.c:(.text+0x19c): undefined reference to `XRRGetCrtcInfo'
x11_monitor.c:(.text+0x1be): undefined reference to `XRRGetOutputInfo'
x11_monitor.c:(.text+0x3d0): undefined reference to `XRRSetCrtcConfig'
x11_monitor.c:(.text+0x3dc): undefined reference to `XRRFreeOutputInfo'
x11_monitor.c:(.text+0x3e8): undefined reference to `XRRFreeCrtcInfo'
x11_monitor.c:(.text+0x3f4): undefined reference to `XRRFreeScreenResources'
/usr/local/lib/libglfw3.a(x11_monitor.c.o): In function `_glfwRestoreVideoMode':
x11_monitor.c:(.text+0x446): undefined reference to `XRRGetScreenResources'
x11_monitor.c:(.text+0x46b): undefined reference to `XRRGetCrtcInfo'
x11_monitor.c:(.text+0x4e0): undefined reference to `XRRSetCrtcConfig'
x11_monitor.c:(.text+0x4ec): undefined reference to `XRRFreeCrtcInfo'
x11_monitor.c:(.text+0x4f8): undefined reference to `XRRFreeScreenResources'
/usr/local/lib/libglfw3.a(x11_monitor.c.o): In function `_glfwPlatformGetMonitors':
x11_monitor.c:(.text+0x55a): undefined reference to `XRRGetScreenResources'
x11_monitor.c:(.text+0x577): undefined reference to `XRRGetOutputPrimary'
x11_monitor.c:(.text+0x5cf): undefined reference to `XRRGetCrtcInfo'
x11_monitor.c:(.text+0x5ea): undefined reference to `XRRFreeCrtcInfo'
x11_monitor.c:(.text+0x659): undefined reference to `XRRGetOutputInfo'
x11_monitor.c:(.text+0x676): undefined reference to `XRRFreeOutputInfo'
x11_monitor.c:(.text+0x682): undefined reference to `XRRFreeCrtcInfo'
x11_monitor.c:(.text+0x703): undefined reference to `XRRFreeOutputInfo'
x11_monitor.c:(.text+0x70f): undefined reference to `XRRFreeCrtcInfo'
x11_monitor.c:(.text+0x733): undefined reference to `XRRFreeScreenResources'
/usr/local/lib/libglfw3.a(x11_monitor.c.o): In function `_glfwPlatformGetMonitorPos':
x11_monitor.c:(.text+0x8a2): undefined reference to `XRRGetScreenResources'
x11_monitor.c:(.text+0x8c7): undefined reference to `XRRGetCrtcInfo'
x11_monitor.c:(.text+0x8ff): undefined reference to `XRRFreeCrtcInfo'
x11_monitor.c:(.text+0x90b): undefined reference to `XRRFreeScreenResources'
/usr/local/lib/libglfw3.a(x11_monitor.c.o): In function `_glfwPlatformGetVideoModes':
x11_monitor.c:(.text+0x9ad): undefined reference to `XRRGetScreenResources'
x11_monitor.c:(.text+0x9cf): undefined reference to `XRRGetOutputInfo'
x11_monitor.c:(.text+0xb44): undefined reference to `XRRFreeOutputInfo'
x11_monitor.c:(.text+0xb50): undefined reference to `XRRFreeScreenResources'
/usr/local/lib/libglfw3.a(x11_monitor.c.o): In function `_glfwPlatformGetVideoMode':
x11_monitor.c:(.text+0xc28): undefined reference to `XRRGetScreenResources'
x11_monitor.c:(.text+0xc4d): undefined reference to `XRRGetCrtcInfo'
x11_monitor.c:(.text+0xca2): undefined reference to `XRRFreeCrtcInfo'
x11_monitor.c:(.text+0xcae): undefined reference to `XRRFreeScreenResources'
/usr/local/lib/libglfw3.a(x11_window.c.o): In function `createWindow':
x11_window.c:(.text+0x666): undefined reference to `XISelectEvents'
x11_window.c:(.text+0x6a8): undefined reference to `XRRSelectInput'
/usr/local/lib/libglfw3.a(x11_window.c.o): In function `processEvent':
x11_window.c:(.text+0x1711): undefined reference to `XRRUpdateConfiguration'

我链接的 CMake 标志：

-I/usr/local/include  -L/usr/local/lib -lglfw3  -lGLU -lGL -lGLEW  

我应该链接其他东西吗？

Answer 1

我在写问题时自己想出了答案。

我被误导以为我正在链接所有必要的东西，因为

pkg-config --libs --cflags --print-requires glfw3 

这是

-I/usr/local/include  -L/usr/local/lib -lglfw3  

--print-requires 标志对输出完全没有影响，这看起来很奇怪。我搜索并打印了对应的.pc文件。

sudo find / | grep "glfw3\.pc"
cat /usr/local/lib/pkgconfig/glfw3.pc 

我在那里找到了这个。

Requires.private:  x11 xrandr xi xxf86vm gl

这表明静态链接需要哪些库。我将他们相应的标志添加到 CMake 中并且它起作用了。我的错误是我在执行 pkg-config 时错过了--print-requires-private 标志。

我希望这可以帮助某人节省一些时间。