INFO:2026-01-15T18:39:00Z:root:pulling...
From github.com:llvm/llvm-project
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   c4b49c76d3e1..09e66be933f8  main       -> origin/main
Switched to branch 'main'
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HEAD is now at 09e66be933f8 [clang][dataflow] Manage stacks of formulas directly instead of recur… (#175980)
INFO:2026-01-15T18:39:03Z:root:syncing...
Deleted branch merge (was c4b49c76d3e1).
Switched to a new branch 'merge'
branch 'merge' set up to track 'origin/main'.
INFO:2026-01-15T18:39:04Z:root:building
ninja: Entering directory `out/gn'
[1/7012] AR lib/libclangAPINotes.a
[2/7012] AR lib/libclangdSupport.a
[3/7012] AR lib/libclangLex.a
[4/7012] AR lib/libclangTesting.a
[5/7012] AR lib/libLLVMBinaryFormat.a
[6/7012] AR lib/libLLVMOrcTargetProcess.a
[7/7012] AR lib/libLLVMWindowsDriver.a
[8/7012] AR lib/libclangRewrite.a
[9/7012] AR lib/libLLVMDebugInfoDWARFLowLevel.a
[10/7012] AR lib/liblldbUtility.a
[11/7012] AR lib/libclangToolingCore.a
[12/7012] AR lib/liblldbInterpreterInterfaces.a
[13/7012] AR lib/libLLVMMC.a
[14/7012] AR lib/libLLVMCore.a
[15/7012] 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'
[16/7012] SOLINK ./lib/BugpointPasses.so
[17/7012] AR lib/libclangToolingInclusions.a
[18/7012] AR lib/libLLVMDWARFCFIChecker.a
[19/7012] LINK ./bin/clang-fuzzer-dictionary
[20/7012] AR lib/liblldbValueObject.a
[21/7012] AR lib/libLLVMFrontendHLSL.a
[22/7012] LINK ./bin/lit-cpuid
[23/7012] LINK ./bin/llvm-config
[24/7012] LINK ./bin/apinotes-test
[25/7012] LINK obj/clang/unittests/Basic/BasicTests
[26/7012] CXX obj/llvm/tools/llvm-remarkutil/llvm-remarkutil.RemarkUtil.o
[27/7012] CXX obj/llvm/unittests/ADT/ADTTests.BitsetTest.o
[28/7012] CXX obj/llvm/unittests/ADT/ADTTests.EditDistanceTest.o
[29/7012] CXX obj/llvm/tools/obj2yaml/obj2yaml.minidump2yaml.o
[30/7012] CXX obj/llvm/unittests/ADT/ADTTests.BreadthFirstIteratorTest.o
[31/7012] CXX obj/llvm/unittests/BinaryFormat/BinaryFormatTests.TestFileMagic.o
[32/7012] CXX obj/llvm/unittests/ADT/ADTTests.FunctionRefTest.o
[33/7012] CXX obj/llvm/unittests/ADT/ADTTests.DAGDeltaAlgorithmTest.o
[34/7012] CXX obj/llvm/unittests/ADT/ADTTests.DeltaAlgorithmTest.o
[35/7012] CXX obj/llvm/unittests/ADT/ADTTests.BitmaskEnumTest.o
[36/7012] CXX obj/llvm/unittests/ADT/ADTTests.DepthFirstIteratorTest.o
[37/7012] CXX obj/llvm/unittests/BinaryFormat/BinaryFormatTests.SFrameTest.o
[38/7012] CXX obj/llvm/unittests/ADT/ADTTests.FoldingSet.o
[39/7012] CXX obj/llvm/unittests/ADT/ADTTests.AnyTest.o
[40/7012] CXX obj/llvm/unittests/BinaryFormat/BinaryFormatTests.MachOTest.o
[41/7012] CXX obj/llvm/unittests/ADT/ADTTests.APSIntTest.o
[42/7012] CXX obj/llvm/unittests/ADT/ADTTests.BitFieldsTest.o
[43/7012] CXX obj/llvm/tools/obj2yaml/obj2yaml.offload2yaml.o
[44/7012] CXX obj/llvm/unittests/ADT/ADTTests.DirectedGraphTest.o
[45/7012] CXX obj/llvm/tools/obj2yaml/obj2yaml.obj2yaml.o
[46/7012] CXX obj/llvm/unittests/ADT/ADTTests.CombinationGeneratorTest.o
[47/7012] CXX obj/llvm/tools/obj2yaml/obj2yaml.archive2yaml.o
[48/7012] CXX obj/llvm/unittests/ADT/ADTTests.ConcurrentHashtableTest.o
[49/7012] CXX obj/llvm/unittests/ADT/ADTTests.APFixedPointTest.o
[50/7012] CXX obj/llvm/unittests/ADT/ADTTests.BitTest.o
[51/7012] CXX obj/llvm/unittests/BinaryFormat/BinaryFormatTests.MsgPackWriterTest.o
[52/7012] CXX obj/llvm/unittests/ADT/ADTTests.BumpPtrListTest.o
[53/7012] CXX obj/llvm/unittests/ADT/ADTTests.ArrayRefTest.o
[54/7012] CXX obj/llvm/unittests/ADT/ADTTests.FallibleIteratorTest.o
[55/7012] CXX obj/llvm/tools/obj2yaml/obj2yaml.xcoff2yaml.o
[56/7012] CXX obj/llvm/unittests/ADT/ADTTests.EnumeratedArrayTest.o
[57/7012] CXX obj/llvm/tools/sanstats/sanstats.sanstats.o
[58/7012] CXX obj/llvm/unittests/BinaryFormat/BinaryFormatTests.MsgPackDocumentTest.o
[59/7012] CXX obj/llvm/tools/obj2yaml/obj2yaml.dxcontainer2yaml.o
[60/7012] CXX obj/llvm/tools/llvm-remarkutil/llvm-remarkutil.RemarkSummary.o
[61/7012] CXX obj/llvm/unittests/ADT/ADTTests.FunctionExtrasTest.o
[62/7012] CXX obj/llvm/unittests/ADT/ADTTests.EquivalenceClassesTest.o
[63/7012] CXX obj/llvm/unittests/ADT/ADTTests.FloatingPointMode.o
[64/7012] CXX obj/llvm/tools/obj2yaml/obj2yaml.coff2yaml.o
[65/7012] CXX obj/llvm/unittests/ADT/ADTTests.HashingTest.o
[66/7012] CXX obj/llvm/unittests/ADT/ADTTests.IListBaseTest.o
[67/7012] CXX obj/llvm/unittests/ADT/ADTTests.CoalescingBitVectorTest.o
[68/7012] CXX obj/llvm/tools/obj2yaml/obj2yaml.wasm2yaml.o
[69/7012] CXX obj/llvm/tools/obj2yaml/obj2yaml.dwarf2yaml.o
[70/7012] CXX obj/llvm/unittests/BinaryFormat/BinaryFormatTests.MsgPackReaderTest.o
[71/7012] CXX obj/llvm/tools/yaml2obj/yaml2obj.yaml2obj.o
[72/7012] CXX obj/llvm/unittests/AsmParser/AsmParserTests.AsmParserTest.o
[73/7012] CXX obj/llvm/unittests/ADT/ADTTests.DynamicAPIntTest.o
[74/7012] CXX obj/llvm/unittests/ADT/ADTTests.DenseSetTest.o
[75/7012] CXX obj/llvm/tools/obj2yaml/obj2yaml.macho2yaml.o
[76/7012] CXX obj/llvm/unittests/ADT/ADTTests.APIntTest.o
[77/7012] CXX obj/llvm/unittests/ADT/ADTTests.BitVectorTest.o
[78/7012] CXX obj/llvm/unittests/ADT/ADTTests.APFloatTest.o
[79/7012] CXX obj/llvm/tools/obj2yaml/obj2yaml.elf2yaml.o
[80/7012] CXX obj/llvm/unittests/ADT/ADTTests.DenseMapTest.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.