This is xnu-4903.221.2. See this file in:
#
# Mach Operating System
# Copyright (c) 1986 Carnegie-Mellon University
# Copyright 2001-2016 Apple Inc.
#
# All rights reserved.  The CMU software License Agreement
# specifies the terms and conditions for use and redistribution.
#  
######################################################################
#
#  Master Apple configuration file (see the master machine independent
#  configuration file for a description of the file format).
#
######################################################################
#  
#  Standard Apple OS Configurations:
#  -------- ----- -- ---------------
#
#  KERNEL_BASE =    [ arm64 xsmall config_embedded config_requires_u32_munging config_zcache ]
#  KERNEL_RELEASE = [ KERNEL_BASE ]
#  KERNEL_DEV =     [ KERNEL_BASE development mach_assert config_xnupost proc_ref_debug os_reason_debug pgtrace ]
#  KERNEL_DEBUG =   [ KERNEL_BASE debug mach_assert config_xnupost config_ltable_stats config_ltable_debug config_waitq_stats config_workloop_debug config_waitq_debug pgtrace ]
#  BSD_BASE =       [ mach_bsd config_workqueue psynch config_proc_uuid_policy config_personas ]
#  BSD_RELEASE =    [ BSD_BASE no_printf_str no_kprintf_str secure_kernel ]
#  BSD_DEV =        [ BSD_BASE config_imageboot config_coredump pgo config_vnguard ]
#  BSD_DEBUG =      [ BSD_BASE config_imageboot config_coredump pgo config_vnguard ]
#  FILESYS_BASE =   [ devfs fifo fs_compression config_mnt_rootsnap config_protect config_fse routefs quota namedstreams ]
#  FILESYS_RELEASE= [ FILESYS_BASE ]
#  FILESYS_DEV =    [ FILESYS_BASE fdesc ]
#  FILESYS_DEBUG =  [ FILESYS_BASE fdesc ]
#  NFS =            [ nfsclient nfsserver ]
#  NETWORKING =     [ inet tcpdrop_synfin bpfilter inet6 ipv6send if_bridge traffic_mgt dummynet ah_all_crypto packet_mangler if_fake ]
#  VPN =            [ ipsec flow_divert necp content_filter ]
#  PF =             [ pf ]
#  MULTIPATH =      [ multipath mptcp ]
#  IOKIT_BASE =     [ iokit iokitcpp no_kextd no_kernel_hid config_sleep ]
#  IOKIT_RELEASE =  [ IOKIT_BASE ]
#  IOKIT_DEV =      [ IOKIT_BASE iokitstats iotracking ]
#  IOKIT_DEBUG =    [ IOKIT_BASE iokitstats iotracking]
#  LIBKERN_BASE =   [ libkerncpp config_kec_fips zlib crypto_sha2 ]
#  LIBKERN_RELEASE =[ LIBKERN_BASE ]
#  LIBKERN_DEV =    [ LIBKERN_BASE iotracking ]
#  LIBKERN_DEBUG =  [ LIBKERN_BASE iotracking ]
#  PERF_DBG_BASE =  [ mach_kdp config_serial_kdp kperf kpc ]
#  PERF_DBG_RELEASE=[ PERF_DBG_BASE ist_kdebug ]
#  PERF_DBG_DEV =   [ PERF_DBG_BASE config_dtrace zleaks kdp_interactive_debugging alternate_debugger interrupt_masked_debug ]
#  PERF_DBG_DEBUG = [ PERF_DBG_BASE config_dtrace zleaks kdp_interactive_debugging alternate_debugger interrupt_masked_debug ]
#  MACH_BASE =      [ mach slidable config_ecc_logging vc_progress_white mdebug ipc_debug importance_inheritance config_atm config_coalitions config_iosched config_library_validation config_sysdiagnose config_telemetry config_mach_bridge_recv_time config_quiesce_counter ]
#  MACH_RELEASE =   [ MACH_BASE config_skip_precise_user_kernel_time debugger_for_zone_info ]
#  MACH_DEV =       [ MACH_BASE task_zone_info config_io_accounting importance_trace ]
#  MACH_DEBUG =     [ MACH_BASE task_zone_info config_io_accounting importance_trace importance_debug ]
#  SCHED_BASE =     [ config_sched_traditional config_sched_multiq config_sched_deferred_ast ]
#  SCHED_RELEASE =  [ SCHED_BASE ]
#  SCHED_DEV =      [ SCHED_BASE ]
#  SCHED_DEBUG =    [ SCHED_BASE config_sched_grrr config_sched_proto ]
#  VM_BASE =        [ vm_pressure_events jetsam freeze memorystatus config_code_decryption phantom_cache config_secluded_memory config_background_queue config_cs_validation_bitmap]
#  VM_RELEASE =     [ VM_BASE ]
#  VM_DEV =         [ VM_BASE dynamic_codesigning ]
#  VM_DEBUG =       [ VM_BASE dynamic_codesigning ]
#  SECURITY =       [ config_macf kernel_integrity ]
#  RELEASE =        [ KERNEL_RELEASE BSD_RELEASE FILESYS_RELEASE SKYWALK_RELEASE NETWORKING PF MULTIPATH VPN IOKIT_RELEASE LIBKERN_RELEASE PERF_DBG_RELEASE MACH_RELEASE SCHED_RELEASE VM_RELEASE SECURITY ]
#  DEVELOPMENT =    [ KERNEL_DEV     BSD_DEV     FILESYS_DEV NFS SKYWALK_DEV     NETWORKING PF MULTIPATH VPN IOKIT_DEV     LIBKERN_DEV     PERF_DBG_DEV     MACH_DEV     SCHED_DEV     VM_DEV     SECURITY ]
#  DEBUG =          [ KERNEL_DEBUG   BSD_DEBUG   FILESYS_DEBUG   SKYWALK_DEBUG   NETWORKING PF MULTIPATH VPN IOKIT_DEBUG   LIBKERN_DEBUG   PERF_DBG_DEBUG   MACH_DEBUG   SCHED_DEBUG   VM_DEBUG   SECURITY ]
#  KASAN =          [ DEVELOPMENT ]
#
######################################################################
#
machine		"arm64"						# <arm64>

makeoptions	OSFMK_MACHINE = "arm64"				# <mach>

options		COUNT_SYSCALLS		# count bsd system calls 	# <countcalls>
options     TRASH_VFP_ON_SAVE   # <debug,trash_vfp>
options		ALTERNATE_DEBUGGER	# <alternate_debugger>

options   CONFIG_VNODES=1024		# <xsmall>

options   CONFIG_FREEZE_SUSPENDED_MIN=4		# <xsmall>

options	  CONFIG_MACH_APPROXIMATE_TIME

options   CONFIG_KERNEL_INTEGRITY		# <kernel_integrity>

options   INTERRUPT_MASKED_DEBUG=1			#      # <interrupt_masked_debug>

options CONFIG_PGTRACE                                      # <pgtrace>
options CONFIG_PGTRACE_NONKEXT                              # <pgtrace_nonkext>
pseudo-device   pgtrace     1   init    pgtrace_dev_init    # <pgtrace_nonkext>