INFO:2026-03-25T18:23:51Z:root:pulling...
From github.com:llvm/llvm-project
 * branch                      main       -> FETCH_HEAD
   507f6978605b..69974d522f5e  main       -> origin/main
Switched to branch 'main'
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HEAD is now at 69974d522f5e [MLIR] [Mem2Reg] Quick fix for dominance info invalidation (#188518)
INFO:2026-03-25T18:23:54Z:root:syncing...
Deleted branch merge (was 507f6978605b).
Switched to a new branch 'merge'
branch 'merge' set up to track 'origin/main'.
INFO:2026-03-25T18:23:55Z:root:building
ninja: Entering directory `out/gn'
[1/533] AR lib/libLLVMipo.a
[2/533] AR lib/libLLVMCodeGen.a
[3/533] AR lib/libclangCodeGen.a
[4/533] 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'
[5/533] LINK ./bin/lli-child-target
[6/533] LINK ./bin/llvm-cgdata
[7/533] LINK ./bin/llvm-link
[8/533] LINK obj/llvm/unittests/Transforms/IPO/IPOTests
[9/533] LINK obj/llvm/unittests/CGData/CodeGenDataTests
[10/533] LINK ./bin/llvm-cxxmap
[11/533] LINK ./bin/sancov
[12/533] LINK ./bin/llvm-dwarfdump
[13/533] LINK ./bin/llvm-bat-dump
[14/533] LINK ./bin/llvm-mca
[15/533] LINK obj/bolt/unittests/Profile/ProfileTests
[16/533] LINK ./bin/llvm-ml
[17/533] LINK ./bin/llvm-cfi-verify
[18/533] LINK ./bin/llvm-cxxdump
[19/533] LINK ./bin/llvm-mc
[20/533] LINK ./bin/llvm-objdump
[21/533] LINK ./bin/llvm-xray
[22/533] LINK ./bin/llvm-debuginfo-analyzer
[23/533] LINK ./bin/llvm-nm
[24/533] LINK ./bin/llvm-libtool-darwin
[25/533] LINK ./bin/llvm-lipo
[26/533] LINK ./bin/llvm-profgen
[27/533] LINK ./bin/llvm-ar
[28/533] LINK ./bin/llvm-jitlink
[29/533] LINK ./bin/llvm-bolt-heatmap
[30/533] LINK ./bin/llvm-extract
[31/533] LINK ./bin/lli
[32/533] LINK ./bin/llvm-bolt
[33/533] LINK obj/bolt/unittests/Core/CoreTests
[34/533] LINK ./bin/llvm-rtdyld
[35/533] LINK obj/llvm/unittests/tools/llvm-exegesis/RISCV/LLVMExegesisRISCVTests
[36/533] LINK ./bin/clang-linker-wrapper
[37/533] LINK obj/clang/unittests/Tooling/Syntax/SyntaxTests
[38/533] LINK obj/clang/unittests/CrossTU/CrossTUTests
[39/533] LINK ./bin/llvm-reduce
[40/533] LINK ./bin/clang-extdef-mapping
[41/533] LINK ./bin/llvm-c-test
[42/533] LINK ./bin/llvm-dwarfutil
[43/533] LINK ./bin/llc
[44/533] LINK ./bin/llvm-gsymutil
[45/533] LINK ./bin/llvm-isel-fuzzer
[46/533] LINK ./bin/opt
[47/533] LINK ./bin/llvm-split
[48/533] LINK obj/llvm/unittests/Analysis/AnalysisTests
[49/533] LINK obj/lld/unittests/AsLibAll/LLDAsLibAllTests
[50/533] LINK ./bin/llvm-lto
[51/533] LINK ./bin/clang-nvlink-wrapper
[52/533] LINK ./bin/dsymutil
[53/533] LINK obj/lld/unittests/AsLibELF/LLDAsLibELFTests
[54/533] LINK ./bin/llvm-ir2vec
[55/533] LINK ./bin/lld
[56/533] SOLINK ./lib/libLTO.so
[57/533] LINK obj/bolt/unittests/Passes/PassTests
[58/533] LINK ./bin/llvm-exegesis
[59/533] LINK ./bin/llvm-opt-fuzzer
[60/533] LINK ./bin/clang-tidy
[61/533] LINK ./bin/llvm-lto2
[62/533] LINK ./bin/llvm-dwp
[63/533] LINK ./bin/clang-sycl-linker
[64/533] LINK obj/clang/unittests/Driver/ClangDriverTests
[65/533] SOLINK ./lib/libclang.so
[66/533] LINK obj/llvm/unittests/CodeGen/CodeGenTests
[67/533] LINK ./bin/clang-check
[68/533] LINK obj/clang/unittests/Tooling/ToolingTests
[69/533] LINK ./bin/clang-repl
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.