This is xnu-8019. See this file in:
#
# Mach Operating System
# Copyright (c) 1986 Carnegie-Mellon University
# Copyright 2001-2018 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 msgb_small config_embedded config_enforce_signed_code config_requires_u32_munging config_darkboot config_waitq_irqsafe_allow_invalid ARM_EXTRAS_BASE ]
#  KERNEL_RELEASE = [ KERNEL_BASE ]
#  KERNEL_DEV =     [ KERNEL_BASE development mach_assert config_xnupost proc_ref_debug config_proc_resource_limits ]
#  KERNEL_DEBUG =   [ KERNEL_BASE debug mach_assert config_xnupost config_ltable_stats config_ltable_debug config_waitq_stats config_workloop_debug config_waitq_debug config_proc_resource_limits ]
#  BSD_BASE =       [ mach_bsd config_workqueue psynch config_proc_uuid_policy config_personas config_imageboot config_imageboot_img4 ]
#  BSD_RELEASE =    [ BSD_BASE no_printf_str no_kprintf_str secure_kernel ]
#  BSD_DEV =        [ BSD_BASE config_netboot config_imgsrc_access config_coredump pgo config_vnguard ]
#  BSD_DEBUG =      [ BSD_BASE config_netboot config_imgsrc_access config_coredump pgo config_vnguard ]
#  FILESYS_BASE =   [ devfs fifo fs_compression config_protect config_mnt_rootsnap config_triggers config_fse routefs namedstreams config_dataless_files bindfs]
#  FILESYS_RELEASE= [ FILESYS_BASE ]
#  FILESYS_DEV =    [ FILESYS_BASE config_union_mounts fdesc ]
#  FILESYS_DEBUG =  [ FILESYS_BASE config_union_mounts fdesc ]
#  NFS_DEV =        [ nfsclient nfsserver config_nfs_gss ]
#  NFS_RELEASE =    [ nfsclient ]
#  NFS_DEBUG =      [ nfsclient config_nfs_gss ]
#  SKYWALK_BASE =   [ skywalk config_nexus_user_pipe config_nexus_kernel_pipe config_nexus_monitor config_nexus_flowswitch config_nexus_netif ]
#  SKYWALK_RELEASE = [ SKYWALK_BASE ]
#  SKYWALK_DEV =    [ SKYWALK_BASE ]
#  SKYWALK_DEBUG =  [ SKYWALK_BASE ]
#  NETWORKING =     [ inet bpfilter if_bridge traffic_mgt dummynet ah_all_crypto if_fake ]
#  NETWORKING_RELEASE = [ NETWORKING ]
#  NETWORKING_DEV = [ NETWORKING_RELEASE packet_mangler if_headless sixlowpan ]
#  NETWORKING_DEBUG = [ NETWORKING_DEV ]
#  VPN =            [ ipsec flow_divert necp content_filter ]
#  PF_RELEASE =     [ pf ]
#  PF_DEV =         [ PF_RELEASE pflog ]
#  PF_DEBUG =       [ PF_DEV ]
#  MULTIPATH =      [ multipath mptcp ]
#  IOKIT_BASE =     [ iokit iokitcpp 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_blocks config_kec_fips zlib crypto_sha2 config_img4 ]
#  LIBKERN_RELEASE =[ LIBKERN_BASE ]
#  LIBKERN_DEV =    [ LIBKERN_BASE iotracking ]
#  LIBKERN_DEBUG =  [ LIBKERN_BASE iotracking ]
#  PERF_DBG_BASE =  [ mach_kdp config_serial_kdp config_perfmon MONOTONIC_BASE kperf kpc ]
#  PERF_DBG_RELEASE=[ PERF_DBG_BASE ist_kdebug ]
#  PERF_DBG_DEV =   [ PERF_DBG_BASE config_dtrace lock_stats zleaks kdp_interactive_debugging alternate_debugger interrupt_masked_debug config_debug_syscall_rejection sched_preemption_disable_debug ]
#  PERF_DBG_DEBUG = [ PERF_DBG_BASE config_dtrace lock_stats zleaks kdp_interactive_debugging alternate_debugger interrupt_masked_debug config_debug_syscall_rejection sched_preemption_disable_debug ]
#  MACH_BASE =      [ mach slidable config_ecc_logging vc_progress_white mdebug ipc_debug ipc_lockfree_space importance_inheritance config_atm config_coalitions config_iosched config_library_validation config_sysdiagnose config_telemetry config_mach_bridge_recv_time config_quiesce_counter phys_write_acct config_io_compression_stats ]
#  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 config_ledger_interval_max ]
#  MACH_DEBUG =     [ MACH_BASE task_zone_info config_io_accounting importance_trace config_ledger_interval_max importance_debug ]
#  SCHED_BASE =     [ config_sched_traditional config_sched_multiq config_sched_deferred_ast config_clutch config_sched_sfi config_taskwatch config_preadopt_tg ]
#  SCHED_RELEASE =  [ SCHED_BASE ]
#  SCHED_DEV =      [ SCHED_BASE ]
#  SCHED_DEBUG =    [ SCHED_BASE config_sched_grrr config_sched_proto ]
#  VM_BASE =        [ vm_pressure_events jetsam 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 ]
#  VM_KASAN =       [ VM_BASE dynamic_codesigning config_kasan config_ubsan config_kcov config_ksancov ]
#  SECURITY_BASE =    [ config_macf kernel_integrity config_secure_bsd_root ]
#  SECURITY_RELEASE = [ SECURITY_BASE ]
#  SECURITY_DEV =     [ SECURITY_BASE config_setuid config_kas_info ]
#  SECURITY_DEBUG =   [ SECURITY_BASE config_setuid config_kas_info ]
#  BASE =           [ MULTIPATH VPN ]
#  RELEASE =        [ BASE KERNEL_RELEASE BSD_RELEASE FILESYS_RELEASE NFS_RELEASE SKYWALK_RELEASE NETWORKING_RELEASE PF_RELEASE IOKIT_RELEASE LIBKERN_RELEASE PERF_DBG_RELEASE MACH_RELEASE SCHED_RELEASE VM_RELEASE SECURITY_RELEASE ]
#  DEVELOPMENT =    [ BASE KERNEL_DEV     BSD_DEV     FILESYS_DEV     NFS_DEV     SKYWALK_DEV     NETWORKING_DEV     PF_DEV     IOKIT_DEV     LIBKERN_DEV     PERF_DBG_DEV     MACH_DEV     SCHED_DEV     VM_DEV     SECURITY_DEV     ]
#  DEBUG =          [ BASE KERNEL_DEBUG   BSD_DEBUG   FILESYS_DEBUG   NFS_DEBUG   SKYWALK_DEBUG   NETWORKING_DEBUG   PF_DEBUG   IOKIT_DEBUG   LIBKERN_DEBUG   PERF_DBG_DEBUG   MACH_DEBUG   SCHED_DEBUG   VM_DEBUG   SECURITY_DEBUG   ]
#  KASAN =          [ BASE KERNEL_DEV     BSD_DEV     FILESYS_DEV     NFS_DEV     SKYWALK_DEV     NETWORKING_DEV     PF_DEV     IOKIT_DEV     LIBKERN_DEV     PERF_DBG_DEV     MACH_DEV     SCHED_DEV     VM_KASAN   SECURITY_DEV     ]
#
######################################################################
#
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   CONFIG_RESLIDE_SHARED_CACHE		# <reslide_shared_cache>
options   CONFIG_KERNEL_TBI		# <kernel_tbi>