INFO:2026-01-15T19:42:56Z:root:pulling...
From github.com:llvm/llvm-project
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   c91ab61de793..6fac9b143252  main       -> origin/main
Switched to branch 'main'
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HEAD is now at 6fac9b143252 [AST] Support structural equivalence checking of attributes on Decls (#168769)
INFO:2026-01-15T19:42:59Z:root:syncing...
Deleted branch merge (was c91ab61de793).
Switched to a new branch 'merge'
branch 'merge' set up to track 'origin/main'.
INFO:2026-01-15T19:42:59Z:root:building
ninja: Entering directory `out/gn'
[1/6333] 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_HAS_TERMINAL=1 _LIBCPP_INSTRUMENTED_WITH_ASAN= _LIBCPP_ABI_DEFINES= _LIBCPP_HARDENING_MODE_DEFAULT=_LIBCPP_HARDENING_MODE_NONE _LIBCPP_LIBC_PICOLIBC= _LIBCPP_LIBC_NEWLIB= _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_LIBC_LLVM_LIBC'
[2/6333] CXX obj/llvm/lib/Analysis/Analysis.DevelopmentModeInlineAdvisor.o
[3/6333] CXX obj/llvm/lib/Analysis/Analysis.EphemeralValuesCache.o
[4/6333] CXX obj/llvm/lib/Analysis/Analysis.ConstraintSystem.o
[5/6333] CXX obj/llvm/lib/Analysis/Analysis.CFGSCCPrinter.o
[6/6333] CXX obj/llvm/lib/Analysis/Analysis.Analysis.o
[7/6333] CXX obj/llvm/lib/Analysis/Analysis.CycleAnalysis.o
[8/6333] CXX obj/llvm/lib/Analysis/Analysis.DomConditionCache.o
[9/6333] CXX obj/llvm/lib/Analysis/Analysis.HeatUtils.o
[10/6333] CXX obj/llvm/lib/Analysis/Analysis.DXILMetadataAnalysis.o
[11/6333] CXX obj/llvm/lib/Analysis/Analysis.ImportedFunctionsInliningStatistics.o
[12/6333] CXX obj/llvm/lib/Analysis/Analysis.IndirectCallPromotionAnalysis.o
[13/6333] CXX obj/llvm/lib/Analysis/Analysis.DominanceFrontier.o
[14/6333] CXX obj/llvm/lib/Bitcode/Writer/Writer.BitWriter.o
[15/6333] CXX obj/llvm/lib/Analysis/Analysis.GuardUtils.o
[16/6333] CXX obj/llvm/lib/Analysis/Analysis.CallGraph.o
[17/6333] CXX obj/llvm/lib/Bitcode/Writer/Writer.BitcodeWriterPass.o
[18/6333] CXX obj/llvm/lib/Analysis/Analysis.CallPrinter.o
[19/6333] CXX obj/llvm/lib/Analysis/Analysis.FloatingPointPredicateUtils.o
[20/6333] CXX obj/llvm/lib/CodeGen/CodeGen.AllocationOrder.o
[21/6333] CXX obj/llvm/lib/Analysis/Analysis.CmpInstAnalysis.o
[22/6333] CXX obj/llvm/lib/Analysis/Analysis.InstCount.o
[23/6333] CXX obj/llvm/lib/Analysis/Analysis.CodeMetrics.o
[24/6333] CXX obj/llvm/lib/Analysis/Analysis.DDGPrinter.o
[25/6333] CXX obj/llvm/lib/Analysis/Analysis.AliasAnalysisEvaluator.o
[26/6333] CXX obj/llvm/lib/Analysis/Analysis.CallGraphSCCPass.o
[27/6333] CXX obj/llvm/lib/Analysis/Analysis.DomPrinter.o
[28/6333] CXX obj/llvm/lib/Analysis/Analysis.BlockFrequencyInfoImpl.o
[29/6333] CXX obj/llvm/lib/Analysis/Analysis.Delinearization.o
[30/6333] CXX obj/llvm/lib/Analysis/Analysis.IVUsers.o
[31/6333] CXX obj/llvm/lib/Analysis/Analysis.CaptureTracking.o
[32/6333] CXX obj/llvm/lib/Analysis/Analysis.CostModel.o
[33/6333] CXX obj/llvm/lib/Analysis/Analysis.CFG.o
[34/6333] CXX obj/llvm/lib/Analysis/Analysis.AssumeBundleQueries.o
[35/6333] CXX obj/llvm/lib/Analysis/Analysis.DomTreeUpdater.o
[36/6333] CXX obj/llvm/lib/Analysis/Analysis.DXILResource.o
[37/6333] CXX obj/llvm/lib/Analysis/Analysis.AliasAnalysis.o
[38/6333] CXX obj/llvm/lib/Analysis/Analysis.DemandedBits.o
[39/6333] CXX obj/llvm/lib/Analysis/Analysis.CFGPrinter.o
[40/6333] CXX obj/llvm/lib/Analysis/Analysis.AliasSetTracker.o
[41/6333] CXX obj/llvm/lib/Analysis/Analysis.AssumptionCache.o
[42/6333] CXX obj/llvm/lib/Analysis/Analysis.DependenceGraphBuilder.o
[43/6333] CXX obj/llvm/lib/Analysis/Analysis.DDG.o
[44/6333] CXX obj/llvm/lib/Analysis/Analysis.HashRecognize.o
[45/6333] CXX obj/llvm/lib/Analysis/Analysis.IR2Vec.o
[46/6333] CXX obj/llvm/lib/Analysis/Analysis.InlineAdvisor.o
[47/6333] CXX obj/llvm/lib/Analysis/Analysis.IVDescriptors.o
[48/6333] CXX obj/llvm/lib/Analysis/Analysis.GlobalsModRef.o
[49/6333] CXX obj/llvm/lib/Analysis/Analysis.InlineOrder.o
[50/6333] CXX obj/llvm/lib/Analysis/Analysis.BlockFrequencyInfo.o
[51/6333] CXX obj/llvm/lib/Analysis/Analysis.BasicAliasAnalysis.o
[52/6333] CXX obj/llvm/lib/Analysis/Analysis.CtxProfAnalysis.o
[53/6333] CXX obj/llvm/lib/Analysis/Analysis.FunctionPropertiesAnalysis.o
[54/6333] CXX obj/llvm/lib/Analysis/Analysis.BranchProbabilityInfo.o
[55/6333] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.Combiner.o
[56/6333] CXX obj/llvm/lib/Analysis/Analysis.DependenceAnalysis.o
[57/6333] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.CallLowering.o
[58/6333] CXX obj/llvm/lib/Bitcode/Writer/Writer.ValueEnumerator.o
[59/6333] CXX obj/llvm/lib/CodeGen/CodeGen.AggressiveAntiDepBreaker.o
[60/6333] CXX obj/llvm/lib/Analysis/Analysis.CGSCCPassManager.o
[61/6333] CXX obj/llvm/lib/Analysis/Analysis.ConstantFolding.o
[62/6333] CXX obj/llvm/lib/Analysis/Analysis.InlineCost.o
[63/6333] CXX obj/llvm/lib/Analysis/Analysis.IRSimilarityIdentifier.o
[64/6333] CXX obj/clang/utils/TableGen/clang-tblgen.ClangAttrEmitter.o
[65/6333] CXX obj/llvm/lib/Bitcode/Writer/Writer.BitcodeWriter.o
[66/6333] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.CombinerHelper.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.