I know this is an old post, but this should clear things up. Maybe it will help somebody. When developing a driver with DriverKit you're essentially developing for a separate platform. Apple greatly restricts what is available. Sometimes it is surprising what isn't available, such as libkern/IOKit objects/methods/functions of the OSObject hierarchy, and especially os_log_create. In any case what's available can found at $(xcode-select -p)/Platforms/DriverKit.platform/Developer/SDKs/DriverKit.sdk/System/DriverKit/System/Library/Frameworks and at $(xcode-select -p)/Platforms/DriverKit.platform/Developer/SDKs/DriverKit.sdk/System/DriverKit/usr/include

I'm burdened by this bug as well. Filed FB15645323 (Xcode Developer Documentation not respecting Objective-C preference)

Bug report submitted: FB13850673 (OpenGL ES based app crashed when running on iOS Simulator)

I just started getting this crash in the iOS Simulator after updating to Xcode 15.4 and iOS 15.5 based simulators. iOS 15.2 based simulators still work. iOS 15.4 do not, have not tried any other version. Thread 9: EXC_BAD_ACCESS (code=2, address=0x11279c000) No idea how to fix it yet. Thread 9 Queue : com.apple.opengl.cvmDoWork (serial) 0 0x000000010465f410 in _platform_memmove () 1 0x00000001b9017ff8 in cvmsServerElementBuild () 2 0x00000001b9013e34 in cvms_element_build_from_source () 3 0x00000001b900a854 in cvm_deferred_build_modular(void*) () 4 0x0000000105c8173c in _dispatch_client_callout () 5 0x0000000105c89a30 in _dispatch_lane_serial_drain () 6 0x0000000105c8a774 in _dispatch_lane_invoke () 7 0x0000000105c971a8 in _dispatch_root_queue_drain_deferred_wlh () 8 0x0000000105c96604 in _dispatch_workloop_worker_thread () 9 0x000000010467f814 in _pthread_wqthread () Enqueued from com.apple.main-thread (Thread 1) Queue : com.apple.main-thread (serial) 0 0x0000000105c861d0 in _dispatch_async_f_slow () 1 0x00000001b9009df8 in cvmObtainMonolithicFunction () 2 0x00000001a63883a8 in gleBuildPrimitiveRenderFunc () 3 0x00000001a63889fc in gleBeginTrianglesRender () 4 0x00000001a632bd84 in gleDrawArraysOrElements_ExecCore () 5 0x00000001a632afd0 in glDrawElements_ES2Exec ()