ninja: Entering directory `out/gn'
[1/531] 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'
[2/531] LINK obj/llvm/unittests/MC/X86/X86MCTests
[3/531] LINK ./bin/llvm-cxxmap
[4/531] LINK obj/llvm/unittests/CGData/CodeGenDataTests
[5/531] LINK ./bin/llvm-mc
[6/531] LINK ./bin/llvm-ml
[7/531] LINK ./bin/llvm-cxxdump
[8/531] LINK ./bin/llvm-lipo
[9/531] LINK obj/llvm/unittests/DebugInfo/GSYM/DebugInfoGSYMTests
[10/531] LINK obj/llvm/unittests/ExecutionEngine/JITLink/JITLinkTests
[11/531] LINK ./bin/llvm-rtdyld
[12/531] LINK ./bin/llvm-libtool-darwin
[13/531] LINK ./bin/llvm-ar
[14/531] LINK ./bin/llvm-xray
[15/531] LINK obj/llvm/unittests/MC/MCTests
[16/531] LINK obj/llvm/unittests/tools/llvm-mca/LLVMMCATests
[17/531] LINK ./bin/lli
[18/531] LINK ./bin/llvm-bolt
[19/531] LINK obj/llvm/unittests/Passes/PassBuilderBindings/PassesBindingsTests
[20/531] LINK ./bin/llvm-jitlink
[21/531] LINK obj/llvm/unittests/ExecutionEngine/Orc/OrcJITTests
[22/531] LINK obj/llvm/unittests/tools/llvm-exegesis/X86/LLVMExegesisX86Tests
[23/531] LINK obj/bolt/unittests/Core/CoreTests
[24/531] LINK obj/llvm/unittests/ExecutionEngine/MCJIT/MCJITTests
[25/531] LINK obj/llvm/unittests/Target/X86/X86Tests
[26/531] LINK ./bin/llvm-isel-fuzzer
[27/531] LINK ./bin/llvm-dwarfutil
[28/531] LINK ./bin/llvm-reduce
[29/531] SOLINK ./lib/libLTO.so
[30/531] LINK obj/llvm/unittests/DebugInfo/DWARF/DebugInfoDWARFTests
[31/531] LINK obj/lld/unittests/AsLibELF/LLDAsLibELFTests
[32/531] LINK obj/llvm/unittests/Target/TargetMachineCTests
[33/531] LINK ./bin/llvm-c-test
[34/531] LINK obj/llvm/unittests/MI/MITests
[35/531] LINK obj/llvm/unittests/MIR/MIRTests
[36/531] LINK obj/llvm/unittests/CodeGen/GlobalISel/GlobalISelTests
[37/531] LINK ./bin/llvm-opt-fuzzer
[38/531] LINK ./bin/llc
[39/531] LINK obj/llvm/unittests/DebugInfo/LogicalView/DebugInfoLogicalViewTests
[40/531] LINK ./bin/clang-sycl-linker
[41/531] LINK ./bin/lld
[42/531] LINK ./bin/llvm-gsymutil
[43/531] LINK ./bin/llvm-lto2
[44/531] LINK obj/llvm/unittests/CodeGen/CodeGenTests
[45/531] LINK ./bin/llvm-lto
[46/531] LINK ./bin/opt
[47/531] LINK ./bin/llvm-split
[48/531] LINK ./bin/clang-linker-wrapper
[49/531] LINK ./bin/llvm-dwp
[50/531] LINK ./bin/clang-nvlink-wrapper
[51/531] LINK ./bin/dsymutil
[52/531] LINK ./bin/bugpoint
[53/531] LINK obj/lld/unittests/AsLibAll/LLDAsLibAllTests
[54/531] CXX obj/clang/lib/Analysis/LifetimeSafety/LifetimeSafety.FactsGenerator.o
[55/531] CXX obj/clang/unittests/Analysis/ClangAnalysisTests.LifetimeSafetyTest.o
ninja: build stopped: subcommand failed.
Command '['ninja', '-C', 'out/gn']' returned non-zero exit status 1.