INFO:2026-03-25T19:35:43Z:root:pulling...
From github.com:llvm/llvm-project
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   55111e8d171d..0e2f4d6acf7a  main       -> origin/main
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HEAD is now at 0e2f4d6acf7a [HLSL][SPIRV] Fix firstbitset in spirv (#186939)
INFO:2026-03-25T19:35:46Z:root:syncing...
Deleted branch merge (was 55111e8d171d).
Switched to a new branch 'merge'
branch 'merge' set up to track 'origin/main'.
INFO:2026-03-25T19:35:46Z:root:building
ninja: Entering directory `out/gn'
[1/2955] 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'
[2/2955] CXX obj/llvm/lib/IR/IR.AbstractCallSite.o
[3/2955] CXX obj/llvm/lib/FuzzMutate/FuzzMutate.OpDescriptor.o
[4/2955] CXX obj/llvm/lib/IR/IR.ConstantFPRange.o
[5/2955] CXX obj/llvm/lib/Frontend/Atomic/Atomic.Atomic.o
[6/2955] CXX obj/llvm/lib/IR/IR.DIExpressionOptimizer.o
[7/2955] CXX obj/llvm/lib/Frontend/Offloading/Offloading.OffloadWrapper.o
[8/2955] CXX obj/llvm/lib/IR/IR.DataLayout.o
[9/2955] CXX obj/llvm/lib/IR/IR.ConstantRange.o
[10/2955] CXX obj/llvm/lib/ExecutionEngine/Orc/Orc.Mangling.o
[11/2955] CXX obj/llvm/lib/IR/IR.ConstantFold.o
[12/2955] CXX obj/llvm/lib/Frontend/Driver/Driver.CodeGenOptions.o
[13/2955] CXX obj/llvm/lib/Frontend/HLSL/HLSL.RootSignatureMetadata.o
[14/2955] CXX obj/llvm/lib/IR/IR.ConvergenceVerifier.o
[15/2955] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.CSEMIRBuilder.o
[16/2955] CXX obj/llvm/lib/ExecutionEngine/Interpreter/Interpreter.ExternalFunctions.o
[17/2955] CXX obj/llvm/lib/IR/IR.BasicBlock.o
[18/2955] CXX obj/llvm/lib/Frontend/OpenMP/OpenMP.OMP.o
[19/2955] CXX obj/llvm/lib/LTO/LTO.UpdateCompilerUsed.o
[20/2955] CXX obj/llvm/lib/ExecutionEngine/ExecutionEngine.ExecutionEngine.o
[21/2955] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.CombinerHelperArtifacts.o
[22/2955] CXX obj/llvm/lib/Frontend/Offloading/Offloading.Utility.o
[23/2955] CXX obj/llvm/lib/ExecutionEngine/Orc/Orc.Layer.o
[24/2955] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.CombinerHelperCompares.o
[25/2955] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.CombinerHelperCasts.o
[26/2955] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.OutputSections.o
[27/2955] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.CombinerHelperVectorOps.o
[28/2955] CXX obj/llvm/lib/IR/IR.DIBuilder.o
[29/2955] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DependencyTracker.o
[30/2955] CXX obj/llvm/lib/ExecutionEngine/Orc/Orc.Speculation.o
[31/2955] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.AcceleratorRecordsSaver.o
[32/2955] CXX obj/llvm/lib/ExecutionEngine/Orc/Debugging/Debugging.LLJITUtilsCBindings.o
[33/2955] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DWARFEmitterImpl.o
[34/2955] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.SyntheticTypeNameBuilder.o
[35/2955] CXX obj/llvm/lib/ExecutionEngine/Orc/Orc.IRPartitionLayer.o
[36/2955] CXX obj/llvm/lib/ExecutionEngine/Orc/Orc.ReOptimizeLayer.o
[37/2955] CXX obj/llvm/lib/ExecutionEngine/Orc/Debugging/Debugging.DebuggerSupport.o
[38/2955] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.CallLowering.o
[39/2955] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DWARFLinker.o
[40/2955] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DIEAttributeCloner.o
[41/2955] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.Combiner.o
[42/2955] CXX obj/llvm/lib/IR/IR.Attributes.o
[43/2955] CXX obj/llvm/lib/IR/IR.Core.o
[44/2955] CXX obj/llvm/lib/Linker/Linker.IRMover.o
[45/2955] CXX obj/llvm/lib/DWARFLinker/Classic/Classic.DWARFStreamer.o
[46/2955] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DWARFLinkerTypeUnit.o
[47/2955] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DWARFLinkerUnit.o
[48/2955] CXX obj/llvm/lib/IR/IR.DebugInfo.o
[49/2955] CXX obj/llvm/lib/FuzzMutate/FuzzMutate.IRMutator.o
[50/2955] CXX obj/llvm/lib/ExecutionEngine/Orc/Debugging/Debugging.ELFDebugObjectPlugin.o
[51/2955] CXX obj/llvm/lib/ExecutionEngine/Orc/Orc.OrcV2CBindings.o
[52/2955] CXX obj/llvm/lib/LTO/LTO.LTOModule.o
[53/2955] CXX obj/llvm/lib/ExecutionEngine/Orc/Orc.ExecutionUtils.o
[54/2955] CXX obj/llvm/lib/ExecutionEngine/Orc/Orc.SpeculateAnalyses.o
[55/2955] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DWARFLinkerCompileUnit.o
[56/2955] CXX obj/llvm/lib/IR/IR.AutoUpgrade.o
[57/2955] CXX obj/llvm/lib/IR/IR.Constants.o
[58/2955] CXX obj/llvm/lib/LTO/LTO.LTOCodeGenerator.o
[59/2955] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DWARFLinkerImpl.o
[60/2955] CXX obj/llvm/lib/ExecutionEngine/Orc/Orc.IndirectionUtils.o
[61/2955] CXX obj/llvm/lib/IR/IR.DebugInfoMetadata.o
[62/2955] CXX obj/llvm/lib/ExecutionEngine/Orc/Orc.LLJIT.o
[63/2955] CXX obj/llvm/lib/DWARFLinker/Classic/Classic.DWARFLinker.o
[64/2955] CXX obj/llvm/lib/LTO/LTO.ThinLTOCodeGenerator.o
[65/2955] CXX obj/llvm/lib/CodeGen/GlobalISel/GlobalISel.CombinerHelper.o
[66/2955] CXX obj/llvm/lib/Frontend/OpenMP/OpenMP.OMPIRBuilder.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.