INFO:2026-03-25T18:56:34Z:root:pulling...
From github.com:llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   4380ae6dbb04..f0604af7ceb6  main       -> origin/main
Switched to branch 'main'
Your branch is behind 'origin/main' by 1 commit, and can be fast-forwarded.
  (use "git pull" to update your local branch)
HEAD is now at f0604af7ceb6 [MLIR] Convert LLVMImportDialectInterface using ODS (#181923)
INFO:2026-03-25T18:56:37Z:root:syncing...
Deleted branch merge (was 4380ae6dbb04).
Switched to a new branch 'merge'
branch 'merge' set up to track 'origin/main'.
INFO:2026-03-25T18:56:38Z:root:building
ninja: Entering directory `out/gn'
[1/3280] ACTION //libcxx/include:write_config_site(//llvm/utils/gn/build/toolchain:unix)
FAILED: include/c++/v1/__config_site 
python3 ../../llvm/utils/gn/build/write_cmake_config.py -o include/c++/v1/__config_site ../../libcxx/include/__config_site.in _LIBCPP_ABI_FORCE_ITANIUM= _LIBCPP_ABI_FORCE_MICROSOFT= _LIBCPP_ABI_VERSION=1 _LIBCPP_ASSERTION_SEMANTIC_DEFAULT=_LIBCPP_ASSERTION_SEMANTIC_HARDENING_DEPENDENT _LIBCPP_EXTRA_SITE_DEFINES= _LIBCPP_HAS_FILESYSTEM=1 _LIBCPP_HAS_THREADS=1 _LIBCPP_HAS_MONOTONIC_CLOCK=1 _LIBCPP_HAS_MUSL_LIBC= _LIBCPP_HAS_THREAD_API_PTHREAD= _LIBCPP_HAS_THREAD_API_EXTERNAL= _LIBCPP_HAS_THREAD_API_WIN32= _LIBCPP_DISABLE_VISIBILITY_ANNOTATIONS= _LIBCPP_HAS_VENDOR_AVAILABILITY_ANNOTATIONS= _LIBCPP_NO_VCRUNTIME= _LIBCPP_TYPEINFO_COMPARISON_IMPLEMENTATION= _LIBCPP_HAS_RANDOM_DEVICE=1 _LIBCPP_HAS_LOCALIZATION=1 _LIBCPP_HAS_UNICODE=1 _LIBCPP_HAS_WIDE_CHARACTERS=1 _LIBCPP_INSTRUMENTED_WITH_ASAN= _LIBCPP_ABI_DEFINES= _LIBCPP_HARDENING_MODE_DEFAULT=_LIBCPP_HARDENING_MODE_NONE _LIBCPP_LIBC_PICOLIBC= _LIBCPP_LIBC_NEWLIB= _LIBCPP_LIBC_LLVM_LIBC= _LIBCPP_PSTL_BACKEND_LIBDISPATCH= _LIBCPP_PSTL_BACKEND_SERIAL= _LIBCPP_PSTL_BACKEND_STD_THREAD=1 _LIBCPP_ABI_NAMESPACE=__1 _LIBCPP_HAS_TIME_ZONE_DATABASE=1
Traceback (most recent call last):
  File "/usr/local/google/home/thakis/src/llvm-project/out/gn/../../llvm/utils/gn/build/write_cmake_config.py", line 122, in <module>
    sys.exit(main())
             ~~~~^^
  File "/usr/local/google/home/thakis/src/llvm-project/out/gn/../../llvm/utils/gn/build/write_cmake_config.py", line 75, in main
    if values[var] == "0":
       ~~~~~~^^^^^
KeyError: '_LIBCPP_HAS_THREAD_API_C11'
[2/3280] CXX obj/llvm/lib/Analysis/Analysis.ValueLatticeUtils.o
[3/3280] CXX obj/llvm/lib/Analysis/Analysis.ValueLattice.o
[4/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAGTargetInfo.o
[5/3280] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.LostDebugLocObserver.o
[6/3280] CXX obj/llvm/lib/Analysis/Analysis.ScalarEvolutionNormalization.o
[7/3280] CXX obj/llvm/lib/Analysis/Analysis.ScalarEvolutionAliasAnalysis.o
[8/3280] CXX obj/llvm/lib/Analysis/Analysis.PtrUseVisitor.o
[9/3280] CXX obj/llvm/lib/Analysis/Analysis.ScalarEvolutionDivision.o
[10/3280] CXX obj/llvm/lib/Analysis/Analysis.TypeBasedAliasAnalysis.o
[11/3280] CXX obj/llvm/lib/Analysis/Analysis.ReplayInlineAdvisor.o
[12/3280] CXX obj/llvm/lib/CodeGen/CodeGen.AllocationOrder.o
[13/3280] CXX obj/llvm/lib/Analysis/Analysis.StaticDataProfileInfo.o
[14/3280] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.MachineFloatingPointPredicateUtils.o
[15/3280] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.LegalizerInfo.o
[16/3280] CXX obj/llvm/lib/Analysis/Analysis.TypeMetadataUtils.o
[17/3280] CXX obj/llvm/lib/Analysis/Analysis.RegionPrinter.o
[18/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SDNodeInfo.o
[19/3280] CXX obj/llvm/lib/CodeGen/CodeGen.BasicBlockMatchingAndInference.o
[20/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.ScheduleDAGVLIW.o
[21/3280] CXX obj/llvm/lib/Analysis/Analysis.RegionInfo.o
[22/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAGAddressAnalysis.o
[23/3280] CXX obj/llvm/lib/Analysis/Analysis.StackLifetime.o
[24/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAGPrinter.o
[25/3280] CXX obj/llvm/lib/AsmParser/AsmParser.Parser.o
[26/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.ResourcePriorityQueue.o
[27/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.LegalizeTypes.o
[28/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.LegalizeTypesGeneric.o
[29/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAGDumper.o
[30/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.ScheduleDAGFast.o
[31/3280] CXX obj/llvm/lib/Analysis/Analysis.UniformityAnalysis.o
[32/3280] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.Localizer.o
[33/3280] CXX obj/llvm/lib/CodeGen/CodeGen.AtomicExpandPass.o
[34/3280] CXX obj/llvm/lib/CodeGen/CodeGen.AggressiveAntiDepBreaker.o
[35/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.ScheduleDAGSDNodes.o
[36/3280] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.MachineIRBuilder.o
[37/3280] CXX obj/llvm/lib/CodeGen/CodeGen.Analysis.o
[38/3280] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.RegBankSelect.o
[39/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.InstrEmitter.o
[40/3280] CXX obj/llvm/lib/Bitcode/Writer/Writer.ValueEnumerator.o
[41/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.LegalizeFloatTypes.o
[42/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.FunctionLoweringInfo.o
[43/3280] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.LoadStoreOpt.o
[44/3280] CXX obj/llvm/lib/Analysis/Analysis.TargetTransformInfo.o
[45/3280] CXX obj/llvm/lib/DTLTO/DTLTO.DTLTO.o
[46/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.LegalizeVectorOps.o
[47/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.ScheduleDAGRRList.o
[48/3280] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.Utils.o
[49/3280] CXX obj/llvm/lib/Analysis/Analysis.VectorUtils.o
[50/3280] CXX obj/llvm/lib/Analysis/Analysis.StackSafetyAnalysis.o
[51/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.LegalizeIntegerTypes.o
[52/3280] CXX obj/llvm/lib/CodeGen/MIRParser/MIRParser.MIParser.o
[53/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.FastISel.o
[54/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.LegalizeDAG.o
[55/3280] CXX obj/llvm/lib/CodeGen/MIRParser/MIRParser.MIRParser.o
[56/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.LegalizeVectorTypes.o
[57/3280] CXX obj/llvm/lib/Analysis/Analysis.ValueTracking.o
[58/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAGISel.o
[59/3280] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.LegalizerHelper.o
[60/3280] CXX obj/llvm/lib/AsmParser/AsmParser.LLParser.o
[61/3280] CXX obj/llvm/lib/CodeGen/CodeGen.AssignmentTrackingAnalysis.o
[62/3280] CXX obj/llvm/lib/Analysis/Analysis.TargetLibraryInfo.o
[63/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAG.o
[64/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAGBuilder.o
[65/3280] CXX obj/llvm/lib/Analysis/Analysis.ScalarEvolution.o
[66/3280] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.DAGCombiner.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.