ninja: Entering directory `out/gn'
[1/4473] 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'
[2/4473] CXX obj/llvm/lib/DWP/DWP.DWPError.o
[3/4473] CXX obj/llvm/lib/ExecutionEngine/Orc/Orc.COFF.o
[4/4473] CXX obj/llvm/lib/ExecutionEngine/ExecutionEngine.GDBRegistrationListener.o
[5/4473] CXX obj/llvm/lib/ExecutionEngine/ExecutionEngine.SectionMemoryManager.o
[6/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAGTargetInfo.o
[7/4473] CXX obj/llvm/lib/ExecutionEngine/ExecutionEngine.TargetSelect.o
[8/4473] CXX obj/llvm/lib/DWARFLinker/Classic/Classic.DWARFLinkerDeclContext.o
[9/4473] CXX obj/llvm/lib/ExecutionEngine/Orc/Orc.AbsoluteSymbols.o
[10/4473] CXX obj/llvm/lib/ExecutionEngine/ExecutionEngine.ExecutionEngineBindings.o
[11/4473] CXX obj/llvm/lib/DWARFLinker/Classic/Classic.DWARFLinkerCompileUnit.o
[12/4473] CXX obj/llvm/lib/ExecutionEngine/MCJIT/MCJIT.MCJIT.o
[13/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SDNodeInfo.o
[14/4473] CXX obj/llvm/lib/ExecutionEngine/Interpreter/Interpreter.Interpreter.o
[15/4473] CXX obj/llvm/lib/ExecutionEngine/Interpreter/Interpreter.ExternalFunctions.o
[16/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAGAddressAnalysis.o
[17/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAGPrinter.o
[18/4473] CXX obj/llvm/lib/ExecutionEngine/JITLink/JITLink.JITLinkGeneric.o
[19/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.ScheduleDAGVLIW.o
[20/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.LegalizeTypesGeneric.o
[21/4473] CXX obj/llvm/lib/DWP/DWP.DWP.o
[22/4473] CXX obj/llvm/lib/CodeGen/CodeGen.VLIWMachineScheduler.o
[23/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.LegalizeTypes.o
[24/4473] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.SyntheticTypeNameBuilder.o
[25/4473] CXX obj/llvm/lib/ExecutionEngine/JITLink/JITLink.JITLink.o
[26/4473] CXX obj/llvm/lib/ExecutionEngine/ExecutionEngine.ExecutionEngine.o
[27/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.ResourcePriorityQueue.o
[28/4473] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.AcceleratorRecordsSaver.o
[29/4473] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.OutputSections.o
[30/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.ScheduleDAGFast.o
[31/4473] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DWARFEmitterImpl.o
[32/4473] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DependencyTracker.o
[33/4473] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DIEAttributeCloner.o
[34/4473] CXX obj/llvm/lib/ExecutionEngine/JITLink/JITLink.ELF_x86.o
[35/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.ScheduleDAGSDNodes.o
[36/4473] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DWARFLinker.o
[37/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAGDumper.o
[38/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.InstrEmitter.o
[39/4473] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DWARFLinkerTypeUnit.o
[40/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.LegalizeFloatTypes.o
[41/4473] CXX obj/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.DbgEntityHistoryCalculator.o
[42/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.FunctionLoweringInfo.o
[43/4473] CXX obj/llvm/lib/DWARFLinker/Classic/Classic.DWARFStreamer.o
[44/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.ScheduleDAGRRList.o
[45/4473] CXX obj/llvm/lib/CodeGen/CodeGen.WindowScheduler.o
[46/4473] CXX obj/llvm/lib/ExecutionEngine/Interpreter/Interpreter.Execution.o
[47/4473] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DWARFLinkerUnit.o
[48/4473] CXX obj/llvm/lib/ExecutionEngine/JITLink/JITLink.ELF_systemz.o
[49/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.LegalizeVectorOps.o
[50/4473] CXX obj/llvm/lib/ExecutionEngine/JITLink/JITLink.ELF_x86_64.o
[51/4473] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DWARFLinkerCompileUnit.o
[52/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.StatepointLowering.o
[53/4473] CXX obj/llvm/lib/ExecutionEngine/Orc/Orc.COFFPlatform.o
[54/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.FastISel.o
[55/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.LegalizeIntegerTypes.o
[56/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.LegalizeDAG.o
[57/4473] CXX obj/llvm/lib/DWARFLinker/Parallel/Parallel.DWARFLinkerImpl.o
[58/4473] CXX obj/llvm/lib/DWARFLinker/Classic/Classic.DWARFLinker.o
[59/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.LegalizeVectorTypes.o
[60/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAGISel.o
[61/4473] CXX obj/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.CodeViewDebug.o
[62/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.TargetLowering.o
[63/4473] CXX obj/llvm/lib/CodeGen/AsmPrinter/AsmPrinter.AsmPrinter.o
[64/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAG.o
[65/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.SelectionDAGBuilder.o
[66/4473] CXX obj/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.DAGCombiner.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.