INFO:2026-01-15T15:14:00Z:root:pulling...
From github.com:llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   fc10fbb71e54..513062dd583d  main       -> origin/main
Switched to branch 'main'
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HEAD is now at 513062dd583d [clang-tidy] Fix performance-move-const-arg for trivially copyable types with private copy constructor (#175449)
INFO:2026-01-15T15:14:02Z:root:syncing...
Deleted branch merge (was fc10fbb71e54).
Switched to a new branch 'merge'
branch 'merge' set up to track 'origin/main'.
INFO:2026-01-15T15:14:03Z:root:building
ninja: Entering directory `out/gn'
[1/657] AR lib/liblldbPluginObjCRuntime.a
[2/657] AR lib/liblldbPluginPlatformWindows.a
[3/657] AR lib/libLLVMFrontendOpenMP.a
[4/657] AR lib/libLLVMAsmPrinter.a
[5/657] AR lib/libLLVMVectorize.a
[6/657] 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'
[7/657] AR lib/libclangAST.a
[8/657] LINK obj/llvm/unittests/DWARFLinkerParallel/DWARFLinkerParallelTests
[9/657] LINK obj/llvm/unittests/MC/SystemZ/SystemZAsmLexerTests
[10/657] LINK obj/llvm/unittests/MC/X86/X86MCTests
[11/657] AR lib/libLLVMAMDGPUCodeGen.a
[12/657] LINK ./bin/lli-child-target
[13/657] LINK obj/llvm/unittests/Transforms/Vectorize/SandboxVectorizer/SandboxVectorizerTests
[14/657] LINK obj/llvm/unittests/Transforms/Vectorize/VectorizeTests
[15/657] LINK ./bin/llvm-link
[16/657] LINK ./bin/llvm-mca
[17/657] LINK ./bin/sancov
[18/657] LINK ./bin/llvm-debuginfo-analyzer
[19/657] LINK obj/llvm/unittests/Transforms/IPO/IPOTests
[20/657] LINK obj/llvm/unittests/ExecutionEngine/ExecutionEngineTests
[21/657] LINK obj/bolt/unittests/Profile/ProfileTests
[22/657] LINK obj/llvm/unittests/Target/WebAssembly/WebAssemblyTests
[23/657] LINK ./bin/llvm-cfi-verify
[24/657] LINK obj/llvm/unittests/tools/llvm-cfi-verify/CFIVerifyTests
[25/657] LINK ./bin/llvm-bat-dump
[26/657] LINK obj/llvm/unittests/Target/ARM/ARMTests
[27/657] LINK ./bin/llvm-objdump
[28/657] LINK obj/llvm/unittests/Target/PowerPC/PowerPCTests
[29/657] LINK obj/llvm/unittests/Target/LoongArch/LoongArchTests
[30/657] LINK ./bin/llvm-profgen
[31/657] LINK obj/llvm/unittests/tools/llvm-exegesis/LLVMExegesisTests
[32/657] LINK obj/llvm/unittests/Transforms/Scalar/ScalarTests
[33/657] LINK obj/llvm/unittests/tools/llvm-exegesis/Mips/LLVMExegesisMipsTests
[34/657] LINK obj/llvm/unittests/tools/llvm-exegesis/PowerPC/LLVMExegesisPowerPCTests
[35/657] LINK obj/llvm/unittests/tools/llvm-mca/LLVMMCATests
[36/657] LINK obj/llvm/unittests/Frontend/LLVMFrontendTests
[37/657] LINK ./bin/lli
[38/657] LINK obj/llvm/unittests/Target/AArch64/AArch64Tests
[39/657] LINK obj/llvm/unittests/Transforms/Instrumentation/InstrumentationTests
[40/657] LINK obj/llvm/unittests/Transforms/Utils/UtilsTests
[41/657] LINK obj/llvm/unittests/Passes/Plugins/PluginsTests
[42/657] LINK obj/llvm/unittests/Transforms/Coroutines/CoroTests
[43/657] LINK obj/llvm/unittests/IR/IRTests
[44/657] LINK obj/llvm/unittests/tools/llvm-exegesis/X86/LLVMExegesisX86Tests
[45/657] LINK obj/llvm/unittests/tools/llvm-exegesis/AArch64/LLVMExegesisAArch64Tests
[46/657] LINK ./bin/llvm-extract
[47/657] LINK obj/llvm/unittests/tools/llvm-exegesis/RISCV/LLVMExegesisRISCVTests
[48/657] LINK obj/llvm/unittests/Target/RISCV/RISCVTests
[49/657] LINK obj/llvm/unittests/Analysis/AnalysisTests
[50/657] LINK obj/llvm/unittests/ExecutionEngine/Orc/OrcJITTests
[51/657] LINK obj/llvm/unittests/Target/X86/X86Tests
[52/657] LINK obj/llvm/unittests/ExecutionEngine/MCJIT/MCJITTests
[53/657] CXX obj/clang-tools-extra/clang-tidy/performance/performance.MoveConstArgCheck.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.