ninja: Entering directory `out/gn'
[1/4408] 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'
[2/4408] CXX obj/llvm/lib/CodeGen/CodeGen.PHIEliminationUtils.o
[3/4408] CXX obj/llvm/lib/CodeGen/CodeGen.OptimizePHIs.o
[4/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegisterClassInfo.o
[5/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegisterUsageInfo.o
[6/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineStableHash.o
[7/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegUsageInfoCollector.o
[8/4408] CXX obj/llvm/lib/CodeGen/CodeGen.PatchableFunction.o
[9/4408] CXX obj/llvm/lib/CodeGen/CodeGen.PostRAHazardRecognizer.o
[10/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegAllocScore.o
[11/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegUsageInfoPropagate.o
[12/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineLoopUtils.o
[13/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineSSAContext.o
[14/4408] CXX obj/llvm/lib/CodeGen/CodeGen.ResetMachineFunctionPass.o
[15/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineStripDebug.o
[16/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RemoveLoadsIntoFakeUses.o
[17/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineSSAUpdater.o
[18/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegisterBankInfo.o
[19/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegisterScavenging.o
[20/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineRegisterInfo.o
[21/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegisterPressure.o
[22/4408] CXX obj/llvm/lib/CodeGen/CodeGen.ProcessImplicitDefs.o
[23/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegAllocEvictionAdvisor.o
[24/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineModuleInfo.o
[25/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineInstrBundle.o
[26/4408] CXX obj/llvm/lib/CodeGen/CodeGen.ShadowStackGCLowering.o
[27/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegAllocPriorityAdvisor.o
[28/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MacroFusion.o
[29/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegAllocBasic.o
[30/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RemoveRedundantDebugValues.o
[31/4408] CXX obj/llvm/lib/CodeGen/CodeGen.SanitizerBinaryMetadata.o
[32/4408] CXX obj/llvm/lib/CodeGen/CodeGen.ScheduleDAGPrinter.o
[33/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineLateInstrsCleanup.o
[34/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RenameIndependentSubregs.o
[35/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegAllocBase.o
[36/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineTraceMetrics.o
[37/4408] CXX obj/llvm/lib/CodeGen/CodeGen.PseudoProbeInserter.o
[38/4408] CXX obj/llvm/lib/CodeGen/CodeGen.ReplaceWithVeclib.o
[39/4408] CXX obj/llvm/lib/CodeGen/CodeGen.ScheduleDAG.o
[40/4408] CXX obj/llvm/lib/CodeGen/CodeGen.ScoreboardHazardRecognizer.o
[41/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineOperand.o
[42/4408] CXX obj/llvm/lib/CodeGen/CodeGen.ReachingDefAnalysis.o
[43/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineRegionInfo.o
[44/4408] CXX obj/llvm/lib/CodeGen/CodeGen.PostRASchedulerList.o
[45/4408] CXX obj/llvm/lib/CodeGen/CodeGen.PeepholeOptimizer.o
[46/4408] CXX obj/llvm/lib/CodeGen/CodeGen.PHIElimination.o
[47/4408] CXX obj/llvm/lib/CodeGen/CodeGen.PreISelIntrinsicLowering.o
[48/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineLoopInfo.o
[49/4408] CXX obj/llvm/lib/CodeGen/CodeGen.ShrinkWrap.o
[50/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineUniformityAnalysis.o
[51/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegAllocFast.o
[52/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RDFGraph.o
[53/4408] CXX obj/llvm/lib/CodeGen/CodeGen.ScheduleDAGInstrs.o
[54/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegAllocPBQP.o
[55/4408] CXX obj/llvm/lib/CodeGen/CodeGen.SafeStack.o
[56/4408] CXX obj/llvm/lib/CodeGen/CodeGen.PrologEpilogInserter.o
[57/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineLICM.o
[58/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegisterCoalescer.o
[59/4408] CXX obj/llvm/lib/CodeGen/CodeGen.ModuloSchedule.o
[60/4408] CXX obj/llvm/lib/CodeGen/CodeGen.SelectOptimize.o
[61/4408] CXX obj/llvm/lib/CodeGen/CodeGen.RegAllocGreedy.o
[62/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineVerifier.o
[63/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineOutliner.o
[64/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineSink.o
[65/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachineScheduler.o
[66/4408] CXX obj/llvm/lib/CodeGen/CodeGen.MachinePipeliner.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.