ninja: Entering directory `out/gn'
[0/1] Regenerating ninja files
[1/3303] 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_C11= _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 126, 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 76, in main
    in_line = var_re.sub(repl, in_line)
  File "/usr/local/google/home/thakis/src/llvm-project/out/gn/../../llvm/utils/gn/build/write_cmake_config.py", line 74, in repl
    return values[key]
           ~~~~~~^^^^^
KeyError: '_LIBCPP_ABI_NAMESPACE_LEN'
[2/3303] CXX obj/BUILD_DIR/gen/lld/tools/lld/lld.lld-driver.o
[3/3303] CXX obj/lld/unittests/AsLibELF/LLDAsLibELFTests.SomeDrivers.o
[4/3303] CXX obj/lld/unittests/AsLibELF/LLDAsLibELFTests.OutputStream.o
[5/3303] CXX obj/lld/unittests/AsLibELF/LLDAsLibELFTests.ROCm.o
[6/3303] CXX obj/lld/ELF/ELF.ScriptLexer.o
[7/3303] CXX obj/lld/MachO/MachO.OutputSection.o
[8/3303] CXX obj/lld/ELF/Arch/ELF.MSP430.o
[9/3303] CXX obj/lld/MachO/MachO.Dwarf.o
[10/3303] CXX obj/llvm/unittests/CGData/CodeGenDataTests.OutlinedHashTreeRecordTest.o
[11/3303] CXX obj/lld/ELF/Arch/ELF.AMDGPU.o
[12/3303] CXX obj/lld/ELF/ELF.DriverUtils.o
[13/3303] CXX obj/lld/MachO/MachO.EhFrame.o
[14/3303] CXX obj/lld/MachO/MachO.ExportTrie.o
[15/3303] CXX obj/lld/COFF/COFF.MarkLive.o
[16/3303] CXX obj/lld/ELF/ELF.EhFrame.o
[17/3303] CXX obj/lld/MachO/Arch/MachO.X86_64.o
[18/3303] CXX obj/lld/MachO/MachO.LinkerOptimizationHints.o
[19/3303] CXX obj/lld/MachO/Arch/MachO.ARM64Common.o
[20/3303] CXX obj/lld/COFF/COFF.Symbols.o
[21/3303] CXX obj/lld/MachO/Arch/MachO.ARM64_32.o
[22/3303] CXX obj/lld/COFF/COFF.COFFLinkerContext.o
[23/3303] CXX obj/lld/MachO/MachO.MarkLive.o
[24/3303] CXX obj/lld/COFF/COFF.LLDMapFile.o
[25/3303] CXX obj/lld/ELF/ELF.SymbolTable.o
[26/3303] CXX obj/lld/MachO/MachO.ICF.o
[27/3303] CXX obj/lld/COFF/COFF.MinGW.o
[28/3303] CXX obj/lld/MachO/MachO.InputSection.o
[29/3303] CXX obj/lld/COFF/COFF.CallGraphSort.o
[30/3303] CXX obj/lld/MachO/MachO.ConcatOutputSection.o
[31/3303] CXX obj/lld/COFF/COFF.MapFile.o
[32/3303] CXX obj/lld/MachO/MachO.MapFile.o
[33/3303] CXX obj/llvm/unittests/CGData/CodeGenDataTests.StableFunctionMapRecordTest.o
[34/3303] CXX obj/lld/ELF/ELF.Symbols.o
[35/3303] CXX obj/lld/ELF/ELF.Target.o
[36/3303] CXX obj/lld/ELF/ELF.AArch64ErrataFix.o
[37/3303] CXX obj/lld/ELF/ELF.MapFile.o
[38/3303] CXX obj/lld/ELF/Arch/ELF.Hexagon.o
[39/3303] CXX obj/lld/MachO/MachO.ObjC.o
[40/3303] CXX obj/lld/ELF/Arch/ELF.Mips.o
[41/3303] CXX obj/lld/ELF/ELF.Thunks.o
[42/3303] CXX obj/llvm/unittests/CodeGen/CodeGenTests.DIEHashTest.o
[43/3303] CXX obj/lld/ELF/ELF.ICF.o
[44/3303] CXX obj/lld/ELF/Arch/ELF.LoongArch.o
[45/3303] CXX obj/lld/ELF/ELF.OutputSections.o
[46/3303] CXX obj/lld/ELF/ELF.ScriptParser.o
[47/3303] CXX obj/lld/COFF/COFF.PDB.o
[48/3303] CXX obj/lld/ELF/ELF.LinkerScript.o
[49/3303] CXX obj/lld/ELF/ELF.MarkLive.o
[50/3303] CXX obj/lld/ELF/ELF.Relocations.o
[51/3303] CXX obj/lld/ELF/ELF.InputSection.o
[52/3303] CXX obj/lld/MachO/MachO.BPSectionOrderer.o
[53/3303] CXX obj/lld/MachO/MachO.DriverUtils.o
[54/3303] CXX obj/lld/MachO/MachO.LTO.o
[55/3303] CXX obj/lld/COFF/COFF.LTO.o
[56/3303] CXX obj/lld/ELF/ELF.LTO.o
[57/3303] CXX obj/lld/COFF/COFF.Writer.o
[58/3303] CXX obj/llvm/tools/llvm-lto/llvm-lto.llvm-lto.o
[59/3303] CXX obj/lld/COFF/COFF.SymbolTable.o
[60/3303] CXX obj/lld/COFF/COFF.InputFiles.o
[61/3303] CXX obj/lld/ELF/ELF.Writer.o
[62/3303] CXX obj/lld/MachO/MachO.Driver.o
[63/3303] CXX obj/lld/MachO/MachO.InputFiles.o
[64/3303] CXX obj/lld/ELF/ELF.InputFiles.o
[65/3303] CXX obj/lld/ELF/ELF.SyntheticSections.o
[66/3303] CXX obj/lld/ELF/ELF.Driver.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.