INFO:2026-01-15T16:14:08Z:root:pulling...
From github.com:llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   1727337d8e0f..3150b73dec83  main       -> origin/main
Switched to branch 'main'
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HEAD is now at 3150b73dec83 [MLIR][XeGPU] Clean up helpers in XeGPUPropagateLayout (#175857)
INFO:2026-01-15T16:14:11Z:root:syncing...
Deleted branch merge (was 1727337d8e0f).
Switched to a new branch 'merge'
branch 'merge' set up to track 'origin/main'.
INFO:2026-01-15T16:14:11Z:root:building
ninja: Entering directory `out/gn'
[1/8392] CXX obj/llvm/lib/Support/Support.MemAlloc.o
[2/8392] 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'
[3/8392] CXX obj/llvm/lib/Support/Support.MathExtras.o
[4/8392] CXX obj/llvm/lib/Support/Support.ProgramStack.o
[5/8392] CXX obj/llvm/lib/Support/Support.Signposts.o
[6/8392] CXX obj/llvm/lib/Support/Support.IntEqClasses.o
[7/8392] CXX obj/llvm/lib/Support/Support.Locale.o
[8/8392] CXX obj/llvm/lib/Support/Support.LEB128.o
[9/8392] CXX obj/llvm/lib/Support/Support.Optional.o
[10/8392] CXX obj/llvm/lib/Support/Support.HexagonAttributes.o
[11/8392] CXX obj/llvm/lib/Support/Support.MSP430Attributes.o
[12/8392] CXX obj/llvm/lib/Support/Support.Hash.o
[13/8392] CXX obj/llvm/lib/Support/Support.InstructionCost.o
[14/8392] CXX obj/llvm/lib/Support/Support.RISCVAttributes.o
[15/8392] CXX obj/llvm/lib/Support/Support.FormattedStream.o
[16/8392] CXX obj/llvm/lib/Support/Support.MemoryBufferRef.o
[17/8392] CXX obj/llvm/lib/Support/Support.OptionStrCmp.o
[18/8392] CXX obj/llvm/lib/Support/Support.RewriteBuffer.o
[19/8392] CXX obj/llvm/lib/Support/Support.SmallVector.o
[20/8392] CXX obj/llvm/lib/Support/Support.IntervalMap.o
[21/8392] CXX obj/llvm/lib/Support/Support.ManagedStatic.o
[22/8392] CXX obj/llvm/lib/Support/Support.StringMap.o
[23/8392] CXX obj/llvm/lib/Support/Support.LineIterator.o
[24/8392] CXX obj/llvm/lib/Support/Support.RewriteRope.o
[25/8392] CXX obj/llvm/lib/Support/Support.SlowDynamicAPInt.o
[26/8392] CXX obj/llvm/lib/Support/Support.PrettyStackTrace.o
[27/8392] CXX obj/llvm/lib/Support/Support.SmallPtrSet.o
[28/8392] CXX obj/llvm/lib/Support/Support.ModRef.o
[29/8392] CXX obj/llvm/lib/Support/Support.Regex.o
[30/8392] CXX obj/llvm/lib/Support/Support.RISCVISAUtils.o
[31/8392] CXX obj/llvm/lib/Support/Support.SipHash.o
[32/8392] CXX obj/llvm/lib/Support/Support.SuffixTreeNode.o
[33/8392] CXX obj/llvm/lib/Support/Support.RWMutex.o
[34/8392] CXX obj/llvm/lib/Support/Support.OptimizedStructLayout.o
[35/8392] CXX obj/llvm/lib/Support/Support.MD5.o
[36/8392] CXX obj/llvm/lib/Support/Support.PluginLoader.o
[37/8392] CXX obj/llvm/lib/Support/Support.HexagonAttributeParser.o
[38/8392] CXX obj/llvm/lib/Support/Support.SHA1.o
[39/8392] CXX obj/llvm/lib/Support/Support.FoldingSet.o
[40/8392] CXX obj/llvm/lib/Support/Support.StringSaver.o
[41/8392] CXX obj/llvm/lib/Support/Support.InitLLVM.o
[42/8392] CXX obj/llvm/lib/Support/Support.ScaledNumber.o
[43/8392] CXX obj/llvm/lib/Support/Support.StringExtras.o
[44/8392] CXX obj/llvm/lib/Support/Support.KnownFPClass.o
[45/8392] CXX obj/llvm/lib/Support/Support.MSP430AttributeParser.o
[46/8392] CXX obj/llvm/lib/Support/Support.SHA256.o
[47/8392] CXX obj/llvm/lib/Support/Support.NativeFormatting.o
[48/8392] CXX obj/llvm/lib/Support/Support.FormatVariadic.o
[49/8392] CXX obj/llvm/lib/Support/Support.RISCVAttributeParser.o
[50/8392] CXX obj/llvm/lib/Support/Support.IntegerInclusiveInterval.o
[51/8392] CXX obj/llvm/lib/Support/Support.GraphWriter.o
[52/8392] CXX obj/llvm/lib/Support/Support.SuffixTree.o
[53/8392] CXX obj/llvm/lib/Support/Support.PGOOptions.o
[54/8392] CXX obj/llvm/lib/Support/Support.Jobserver.o
[55/8392] CXX obj/llvm/lib/Support/Support.RandomNumberGenerator.o
[56/8392] CXX obj/llvm/lib/Support/Support.MemoryBuffer.o
[57/8392] CXX obj/llvm/lib/Support/Support.LockFileManager.o
[58/8392] CXX obj/llvm/lib/Support/Support.StringRef.o
[59/8392] CXX obj/llvm/lib/Support/Support.KnownBits.o
[60/8392] CXX obj/llvm/lib/Support/Support.GlobPattern.o
[61/8392] CXX obj/llvm/lib/Support/Support.Parallel.o
[62/8392] CXX obj/llvm/lib/Support/Support.Statistic.o
[63/8392] CXX obj/llvm/lib/Support/Support.ScopedPrinter.o
[64/8392] CXX obj/llvm/lib/Support/Support.SourceMgr.o
[65/8392] CXX obj/llvm/lib/Support/Support.JSON.o
[66/8392] CXX obj/llvm/lib/Support/Support.Mustache.o
[67/8392] CXX obj/llvm/lib/Support/Support.SpecialCaseList.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.