ninja: Entering directory `out/gn'
[1/4356] 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'
[2/4356] AR lib/libLLVMAnalysis.a
[3/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LowerAtomic.o
[4/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.UnifyFunctionExitNodes.o
[5/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LowerVectorIntrinsics.o
[6/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LowerInvoke.o
[7/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.SanitizerStats.o
[8/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.Mem2Reg.o
[9/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.SizeOpts.o
[10/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.IntegerDivision.o
[11/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.MisExpect.o
[12/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.CallGraphUpdater.o
[13/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LowerGlobalDtors.o
[14/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.MatrixUtils.o
[15/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.MetaRenamer.o
[16/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.ProfileVerify.o
[17/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.StripNonLineTableDebugInfo.o
[18/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.StripGCRelocates.o
[19/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.UnifyLoopExits.o
[20/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.Instrumentation.o
[21/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LowerSwitch.o
[22/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.RelLookupTableConverter.o
[23/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.SampleProfileLoaderBaseUtil.o
[24/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.SSAUpdaterBulk.o
[25/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.SplitModuleByCategory.o
[26/4356] CXX obj/llvm/lib/Transforms/Vectorize/SandboxVectorizer/Passes/Vectorize.RegionsFromMetadata.o
[27/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.SSAUpdater.o
[28/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.ModuleUtils.o
[29/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.MemoryOpRemark.o
[30/4356] CXX obj/llvm/lib/Transforms/Vectorize/SandboxVectorizer/Passes/Vectorize.TransactionSave.o
[31/4356] CXX obj/llvm/lib/Transforms/Vectorize/SandboxVectorizer/Passes/Vectorize.TransactionAcceptOrRevert.o
[32/4356] CXX obj/llvm/lib/Transforms/Vectorize/SandboxVectorizer/Vectorize.SandboxVectorizer.o
[33/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LowerMemIntrinsics.o
[34/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.MoveAutoInit.o
[35/4356] CXX obj/llvm/lib/Transforms/Vectorize/SandboxVectorizer/Passes/Vectorize.RegionsFromBBs.o
[36/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LibCallsShrinkWrap.o
[37/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.CallPromotionUtils.o
[38/4356] CXX obj/llvm/lib/Transforms/Vectorize/SandboxVectorizer/Vectorize.VecUtils.o
[39/4356] CXX obj/llvm/lib/Transforms/Vectorize/SandboxVectorizer/Passes/Vectorize.SeedCollection.o
[40/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.MemoryTaggingSupport.o
[41/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.PredicateInfo.o
[42/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LCSSA.o
[43/4356] CXX obj/llvm/lib/Transforms/Vectorize/SandboxVectorizer/Passes/Vectorize.PackReuse.o
[44/4356] CXX obj/llvm/lib/Transforms/Vectorize/SandboxVectorizer/Vectorize.Scheduler.o
[45/4356] CXX obj/llvm/lib/Transforms/Vectorize/SandboxVectorizer/Vectorize.SeedCollector.o
[46/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LoopConstrainer.o
[47/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LoopRotationUtils.o
[48/4356] CXX obj/llvm/lib/Transforms/Vectorize/SandboxVectorizer/Vectorize.SandboxVectorizerPassBuilder.o
[49/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.PromoteMemoryToRegister.o
[50/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LoopVersioning.o
[51/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LoopSimplify.o
[52/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LoopUnrollRuntime.o
[53/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.SimplifyIndVar.o
[54/4356] CXX obj/llvm/lib/Transforms/Vectorize/Vectorize.VPlanPredicator.o
[55/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LoopUnrollAndJam.o
[56/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.SimplifyLibCalls.o
[57/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LoopPeel.o
[58/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.SCCPSolver.o
[59/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LoopUnroll.o
[60/4356] CXX obj/llvm/lib/Transforms/Vectorize/Vectorize.VPlanConstruction.o
[61/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.LoopUtils.o
[62/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.ScalarEvolutionExpander.o
[63/4356] CXX obj/llvm/lib/Transforms/Vectorize/Vectorize.VPlanAnalysis.o
[64/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.Local.o
[65/4356] CXX obj/llvm/lib/Transforms/Vectorize/Vectorize.VPlan.o
[66/4356] CXX obj/llvm/lib/Transforms/Utils/Utils.SimplifyCFG.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.