Compiler and extractor output from the last build (2026-09-08, xnu f6217f8 (2025-10-16)). 33 error lines, 3 warning lines across 13 steps. These are expected: the SDK ships headers that do not compile standalone (missing private includes, assembler-only files, non-arm64 branches); such headers are skipped, listed per corpus in tools/corpora.py.
extract_headers --corpus mach (1 err, 0 warn)
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/mach/arm/ndr_def.h:36:14: error: redefinition of 'NDR_record'
dedup: dropped 206 headers identical to documented usr/include twins
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/firewire/IOFWUserObjectExporter.h:34:8: error: redefinition of 'IOFWUserObjectExporter'
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/scsi/IOSCSIBlockCommandsDevice.h:48:2: error: redefinition of enumerator 'kMediaStateUnlocked'
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/scsi/IOSCSIBlockCommandsDevice.h:49:2: error: redefinition of enumerator 'kMediaStateLocked'
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/scsi/IOSCSIBlockCommandsDevice.h:114:17: error: expected ';' at end of declaration list
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/scsi/IOSCSIBlockCommandsDevice.h:130:29: error: duplicate member 'fIOSCSIMultimediaCommandsDeviceReserved'
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/scsi/IOSCSIBlockCommandsDevice.h:130:29: error: expected ';' at end of declaration list
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/scsi/IOSCSIBlockCommandsDevice.h:133:29: error: duplicate member 'fIOSCSIMultimediaCommandsDeviceReserved'
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/scsi/IOSCSIBlockCommandsDevice.h:133:29: error: expected ';' at end of declaration list
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/scsi/IOSCSIReducedBlockCommandsDevice.h:84:2: error: redefinition of enumerator 'kMediaStateUnlocked'
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/scsi/IOSCSIReducedBlockCommandsDevice.h:85:2: error: redefinition of enumerator 'kMediaStateLocked'
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/scsi/IOSCSIReducedBlockCommandsDevice.h:119:16: error: expected ';' at end of declaration list
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/scsi/IOSCSIReducedBlockCommandsDevice.h:123:10: error: duplicate member 'fIOSCSIBlockCommandsDeviceReserved'
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/IOKit/scsi/IOSCSIReducedBlockCommandsDevice.h:123:10: error: expected ';' at end of declaration list
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/arm/thread.h:94:78: error: unknown type name 'uint128_t'
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/arm64/machine_cpuid.h:45:3: error: typedef redefinition with different types ('struct arm_feature_bits_t' vs 'struct arm_feature_bits_t')
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/arm64/machine_cpuid.h:68:3: error: typedef redefinition with different types ('struct arm_debug_info_t' vs 'struct arm_debug_info_t')
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/kern/hv_support.h:39:2: error: unsupported arch
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/kern/hv_support_kext.h:70:12: error: declaration of 'hv_support_available' has a different language linkage
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/kern/hv_support_kext.h:72:13: error: declaration of 'hv_support_init' has a different language linkage
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/kern/hv_support_kext.h:73:12: error: declaration of 'hv_get_support' has a different language linkage
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/kern/hv_support_kext.h:74:13: error: declaration of 'hv_set_task_target' has a different language linkage
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/kern/hv_support_kext.h:75:13: error: declaration of 'hv_set_thread_target' has a different language linkage
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/kern/hv_support_kext.h:76:14: error: declaration of 'hv_get_task_target' has a different language linkage
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/kern/hv_support_kext.h:77:14: error: declaration of 'hv_get_thread_target' has a different language linkage
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/kern/lock_sleep.h:36:2: error: "include <kern/lock_types.h> instead"
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/kern/thread_group.h:40:2: error: "The platform must define CONFIG_THREAD_GROUPS to 0 or 1"
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/mach/arm/syscall_sw.h:115:15: error: '#' is not followed by a macro parameter
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/netinet6/in6.h:94:2: error: "do not include netinet6/in6.h directly, include netinet/in.h. " " see RFC2553"
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/netinet6/in6_private.h:94:2: error: "do not include netinet6/in6_private.h directly, include netinet/in_private.h. " " see RFC2553"
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/netinet6/nd6.h:147:16: error: field has incomplete type 'struct prf_ra'
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/sys/ucontext.h:46:34: error: field has incomplete type 'struct user64_sigaltstack'
ERROR: /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Kernel.framework/Versions/A/Headers/sys/ucontext.h:55:34: error: field has incomplete type 'struct user32_sigaltstack'
WARN Kernel/sys/conf.h:168 CursorKind.FUNCTION_DECL:
WARN Kernel/sys/conf.h:169 CursorKind.FUNCTION_DECL:
dedup: dropped 5997 symbols identical to those in other corpora