cmake _GLFW_HAS_DLOPEN examples

slicol/Games101-Homework-Win Assignment8/CGL/deps/glfw/CMakeLists.txt :408 

check_function_exists(dlopen _GLFW_HAS_DLOPEN)

openglsuperbible/sb7code extern/glfw-3.0.4/CMakeLists.txt :289 

check_function_exists(dlopen _GLFW_HAS_DLOPEN)