ninja: Entering directory `out/gn'
[1/4347] 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_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_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 72, 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 70, in repl
    return values[key]
           ~~~~~~^^^^^
KeyError: '_LIBCPP_ASSERTION_SEMANTIC_DEFAULT'
[2/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MBFIWrapper.o
[3/4347] CXX obj/llvm/lib/CodeGen/CodeGen.LoopTraversal.o
[4/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineBranchProbabilityInfo.o
[5/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineFunctionPrinterPass.o
[6/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MIRNamerPass.o
[7/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineBlockHashInfo.o
[8/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineOptimizationRemarkEmitter.o
[9/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineDominanceFrontier.o
[10/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineSizeOpts.o
[11/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MIRPrintingPass.o
[12/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineModuleSlotTracker.o
[13/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineSSAContext.o
[14/4347] CXX obj/llvm/lib/CodeGen/CodeGen.LocalStackSlotAllocation.o
[15/4347] CXX obj/llvm/lib/CodeGen/CodeGen.LowerEmuTLS.o
[16/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineStableHash.o
[17/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MIRYamlMapping.o
[18/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineLoopUtils.o
[19/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineFunctionAnalysis.o
[20/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MIRVRegNamerUtils.o
[21/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineStripDebug.o
[22/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineCFGPrinter.o
[23/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineFrameInfo.o
[24/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineDomTreeUpdater.o
[25/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineSSAUpdater.o
[26/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineInstrBundle.o
[27/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineModuleInfo.o
[28/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MIRCanonicalizerPass.o
[29/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineCheckDebugify.o
[30/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineRegisterInfo.o
[31/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineLateInstrsCleanup.o
[32/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineCombiner.o
[33/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineTraceMetrics.o
[34/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MacroFusion.o
[35/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineConvergenceVerifier.o
[36/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MIRFSDiscriminator.o
[37/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineFunctionPass.o
[38/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineOperand.o
[39/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MLRegAllocPriorityAdvisor.o
[40/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachinePassManager.o
[41/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineCSE.o
[42/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineBlockFrequencyInfo.o
[43/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineCycleAnalysis.o
[44/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineFunctionSplitter.o
[45/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineLoopInfo.o
[46/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MLRegAllocEvictAdvisor.o
[47/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineRegionInfo.o
[48/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineDebugify.o
[49/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MIR2Vec.o
[50/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineUniformityAnalysis.o
[51/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachinePostDominators.o
[52/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineDominators.o
[53/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineCopyPropagation.o
[54/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineFunction.o
[55/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineBasicBlock.o
[56/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineLICM.o
[57/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineInstr.o
[58/4347] CXX obj/llvm/lib/CodeGen/CodeGen.ModuloSchedule.o
[59/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MIRSampleProfile.o
[60/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineBlockPlacement.o
[61/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineOutliner.o
[62/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MIRPrinter.o
[63/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineVerifier.o
[64/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineSink.o
[65/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachineScheduler.o
[66/4347] CXX obj/llvm/lib/CodeGen/CodeGen.MachinePipeliner.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.