tests: disable OpenGL client compositor test if GLX is not present
Fixes the behaviour introduces in !1465 (merged)
tests_comp_client_opengl has an undefined reference to a symbol only activated if GLX is present
ninja: job failed: : && /usr/bin/c++ -pedantic -Wall -Wextra -Wno-unused-parameter -g tests/CMakeFiles/tests_comp_client_opengl.dir/
tests_comp_client_opengl.cpp.o -o tests/tests_comp_client_opengl -Wl,-rpath,/usr/local/lib tests/libtests_main.a src/xrt/auxiliary
/util/libaux_util.a src/xrt/compositor/libcomp_client.a src/xrt/compositor/libcomp_mock.a src/xrt/auxiliary/ogl/libaux_ogl.a /usr
/lib/libSDL2main.a /usr/lib/libSDL2-2.0.so.0.2400.0 /usr/local/lib/libEGL.so src/xrt/auxiliary/vk/libaux_vk.a src/xrt/auxiliary/o
s/libaux_os.a -ldbus-1 /usr/lib/libvulkan.so src/xrt/auxiliary/util/libaux_util.a src/xrt/auxiliary/math/libaux_math.a src/xrt/a
uxiliary/util/libaux_util.a src/xrt/auxiliary/math/libaux_math.a src/xrt/auxiliary/bindings/libaux_generated_bindings.a /usr/lib/l
ibjpeg.so && :
/usr/lib/gcc/x86_64-alpine-linux-musl/12.1.1/../../../../x86_64-alpine-linux-musl/bin/ld: tests/CMakeFiles/tests_comp_client_opengl.d
ir/tests_comp_client_opengl.cpp.o: in function `C_A_T_C_H_T_E_S_T_0()':
/home/simon/src/monado/tests/tests_comp_client_opengl.cpp:68: undefined reference to `client_gl_xlib_compositor_create' My system has XCB and XLIB but not GLX
-- #####----- Config -----#####
-- # GIT_DESC: v21.0.0-2384-gedd1aa0d
-- #
-- # BLUETOOTH: OFF
-- # BASALT: OFF
-- # D3D11: OFF
-- # DBUS: ON
-- # EGL: ON
-- # FFMPEG: ON
-- # GST (GStreamer): ON
-- # HIDAPI: ON
-- # JPEG: ON
-- # KIMERA: OFF
-- # LIBBSD: OFF
-- # LIBUSB: ON
-- # LIBUVC: OFF
-- # ONNXRUNTIME: ON
-- # OPENCV: ON
-- # OPENGL: ON
-- # OPENGLES: ON
-- # OPENGL_GLX: OFF
-- # PERCETTO: OFF
-- # REALSENSE: OFF
-- # SDL2: ON
-- # SLAM: OFF
-- # SYSTEM_CJSON: OFF
-- # SYSTEMD: OFF
-- # VULKAN: ON
-- # WAYLAND: ON
-- # WAYLAND_DIRECT: ON
-- # XCB: ON
-- # XLIB: ON
-- # XRANDR: ON