compile error version 3.4

[huyuxiang-hub]

[ 25%] Building C object src/CMakeFiles/glfw.dir/null_monitor.c.o
[ 26%] Building C object src/CMakeFiles/glfw.dir/null_window.c.o
[ 27%] Building C object src/CMakeFiles/glfw.dir/null_joystick.c.o
[ 27%] Building C object src/CMakeFiles/glfw.dir/posix_module.c.o
[ 28%] Building C object src/CMakeFiles/glfw.dir/posix_time.c.o
/home/ihep/intro_OpenGL/glfw-3.4/src/posix_time.c: In function ‘_glfwPlatformInitTimer’:
/home/ihep/intro_OpenGL/glfw-3.4/src/posix_time.c:42:31: error: ‘CLOCK_REALTIME’ undeclared (first use in this function)
42 | _glfw.timer.posix.clock = CLOCK_REALTIME;
| ^~~~~~~~~~~~~~
/home/ihep/intro_OpenGL/glfw-3.4/src/posix_time.c:42:31: note: each undeclared identifier is reported only once for each function it appears in
/home/ihep/intro_OpenGL/glfw-3.4/src/posix_time.c:47:9: warning: implicit declaration of function ‘clock_gettime’ [-Wimplicit-function-declaration]
47 | if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0)
| ^~~~~~~~~~~~~
/home/ihep/intro_OpenGL/glfw-3.4/src/posix_time.c:47:23: error: ‘CLOCK_MONOTONIC’ undeclared (first use in this function)
47 | if (clock_gettime(CLOCK_MONOTONIC, &ts) == 0)
| ^~~~~~~~~~~~~~~
gmake[2]: *** [src/CMakeFiles/glfw.dir/posix_time.c.o] Error 1
gmake[1]: *** [src/CMakeFiles/glfw.dir/all] Error 2
gmake: *** [all] Error 2

[dougbinks]

See issue #2139 which also has a solution.