Does not build on macOS

[ 56%] Built target App_PhysicsServer_SharedMemory [ 56%] Linking CXX executable App_PhysicsServer_SharedMemory_GUI Undefined symbols for architecture arm64: "SimpleOpenGL3App::SimpleOpenGL3App(char const*, int, int, bool, int, int, int, int)", referenced from: _main in main_opengl_single_example.cpp.o "_useShadowMap", referenced from: GL_ShapeDrawer::drawScene(btDiscreteDynamicsWorld const*, bool, int) in GL_ShapeDrawer.cpp.o ld: symbol(s) not found for architecture arm64 clang: error: linker command failed with exit code 1 (use -v to see invocation) make[2]: *** [examples/BasicDemo/AppBasicExampleGui] Error 1 make[1]: *** [examples/BasicDemo/CMakeFiles/AppBasicExampleGui.dir/all] Error 2 make[1]: *** Waiting for unfinished jobs.... [ 65%] Built target BulletRobotics Undefined symbols for architecture arm64: "SimpleOpenGL3App::SimpleOpenGL3App(char const*, int, int, bool, int, int, int, int)", referenced from: _main in main_opengl_single_example.cpp.o "_useShadowMap", referenced from: GL_ShapeDrawer::drawScene(btDiscreteDynamicsWorld const*, bool, int) in GL_ShapeDrawer.cpp.o ld: symbol(s) not found for architecture arm64 clang: error: linker command failed with exit code 1 (use -v to see invocation) make[2]: *** [examples/SharedMemory/App_PhysicsServer_SharedMemory_GUI] Error 1 make[1]: *** [examples/SharedMemory/CMakeFiles/App_PhysicsServer_SharedMemory_GUI.dir/all] Error 2

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/Volumes/Part4/Software_Mac/bullet3/examples/ExampleBrowser/OpenGLExampleBrowser.cpp:942:3: error: use of undeclared identifier 'simpleApp' simpleApp->setMp4Fps(gVideoFps);