INFO:2026-01-15T15:53:11Z:root:pulling...
From github.com:llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   1d616cdca3ab..e39d44c43022  main       -> origin/main
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HEAD is now at e39d44c43022 [X86] Add tests showing failure to split/concat X86ISD::PCLMULQDQ nodes (#176179)
INFO:2026-01-15T15:53:14Z:root:syncing...
Deleted branch merge (was 1d616cdca3ab).
Switched to a new branch 'merge'
branch 'merge' set up to track 'origin/main'.
INFO:2026-01-15T15:53:14Z:root:building
ninja: Entering directory `out/gn'
[1/2604] 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'
[2/2604] LINK ./bin/clang-fuzzer-dictionary
[3/2604] LINK ./bin/llvm-config
[4/2604] LINK ./bin/lit-cpuid
[5/2604] LINK ./bin/apinotes-test
[6/2604] LINK ./bin/merge-fdata
[7/2604] LINK ./bin/llvm-jitlink-executor
[8/2604] LINK ./bin/llvm-bcanalyzer
[9/2604] LINK obj/llvm/unittests/Telemetry/TelemetryTests
[10/2604] LINK ./bin/llvm-opt-report
[11/2604] LINK obj/llvm/unittests/tools/llvm-profgen/LLVMProfgenTests
[12/2604] LINK obj/llvm/unittests/InterfaceStub/InterfaceStubTests
[13/2604] LINK ./bin/llvm-dis
[14/2604] LINK obj/llvm/unittests/DebugInfo/Symbolizer/DebugInfoSymbolizerTests
[15/2604] LINK ./bin/llvm-remarkutil
[16/2604] LINK obj/llvm/unittests/BinaryFormat/BinaryFormatTests
[17/2604] LINK obj/llvm/unittests/Remarks/RemarksTests
[18/2604] LINK ./bin/clang-format
[19/2604] LINK obj/llvm/unittests/TextAPI/TextAPITests
[20/2604] LINK obj/llvm/unittests/AsmParser/AsmParserTests
[21/2604] LINK obj/clang/unittests/Basic/BasicTests
[22/2604] LINK obj/llvm/unittests/TargetParser/TargetParserTests
[23/2604] LINK ./bin/llvm-diff
[24/2604] LINK obj/llvm/unittests/tools/llvm-profdata/LLVMProfdataTests
[25/2604] LINK ./bin/llvm-offload-binary
[26/2604] LINK obj/llvm/unittests/XRay/XRayTests
[27/2604] LINK obj/llvm/unittests/Debuginfod/DebuginfodTests
[28/2604] LINK ./bin/sanstats
[29/2604] LINK ./bin/llvm-ctxprof-util
[30/2604] LINK ./bin/yaml2obj
[31/2604] LINK obj/llvm/unittests/ObjCopy/ObjCopyTests
[32/2604] LINK obj/llvm/unittests/DebugInfo/BTF/DebugInfoBTFTests
[33/2604] LINK ./bin/llvm-profdata
[34/2604] LINK ./bin/obj2yaml
[35/2604] LINK obj/llvm/unittests/ObjectYAML/ObjectYAMLTests
[36/2604] LINK obj/llvm/unittests/DebugInfo/PDB/DebugInfoPDBTests
[37/2604] LINK ./bin/llvm-cov
[38/2604] LINK ./bin/llvm-pdbutil
[39/2604] LINK ./bin/llvm-tblgen
[40/2604] LINK obj/llvm/unittests/Object/ObjectTests
[41/2604] LINK obj/llvm/unittests/ProfileData/ProfileDataTests
[42/2604] LINK obj/llvm/unittests/ADT/ADTTests
[43/2604] LINK obj/llvm/unittests/Support/SupportTests
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.